Company lists · Data refreshed September 2026
Top 22 Heating contractors based in Ottawa, Canada
RevenueBase identified 43 company matches for heating contractors associated with Ottawa, Canada as of September 2026 and tracks 354 professional contacts across them, including 155 with verified work emails. Across Canada, Calgary is the largest hub for this category (115 companies); Ottawa has 43.
This list covers company matches for heating contractors associated with Ottawa, Canada, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 16, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 22 largest heating contractors based in Ottawa, Canada
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 57 contacts → | ||||
Exact match “Lar-Mex with a staff of over 200 employees has been providing heating, ventilation, plumbing and air conditioning (HVAC) services to the National Capital region for over 30 years.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 2 | 40 contacts → | ||||
Exact match “Since 1986, we have been providing commercial, industrial and institutional piping, plumbing and heating services to Ottawa and Eastern Ontario.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 3 | 35 contacts → | ||||
Exact match “Climate Works is a leading mechanical service provider based in Ottawa, delivering professional heating, cooling, ventilation, and plumbing solutions to commercial, industrial…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 4 | 17 contacts → | ||||
Exact match “For over 90 years the Francis Plumbing & Heating team has continued to provide ongoing excellence in water services including plumbing, heating, radiant floor heating, boilers…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 5 | 15 contacts → | ||||
Exact match “Total HVAC has been a leader in the supply of commercial heating, ventilation, and air-conditioning equipment in Eastern Ontario and Western Quebec for 25 years.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 6 | 14 contacts → | ||||
Exact match “Anchor is a residential heating and cooling contractor specializing in replacement, repair and maintenance of home comfort systems.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 7 | 13 contacts → | ||||
Exact match “Reliable Home Environment has a strong reputation in Ottawa for providing signature custom installations of heating and cooling products that consistently exceed our customers’…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 8 | 11 contacts → | ||||
Exact match “Baxtec Mechanical Services is a dynamic and growing commercial mechanical contractor in the Ottawa area.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 9 | 11 contacts → | ||||
Exact match “Ottawa's Source For Total Home Comfort Since 1994 Heating • Cooling • Fireplaces • BBQs & Grills” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 10 | 10 contacts → | ||||
Exact match “For over four decades, Longhill Energy has become known for its “niche” specialty products in Ottawa and across Ontario.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 11 | 8 contacts → | ||||
Exact match “Harrys Home Comfort is a leading heating and cooling business that serves Ottawa and surrounding area.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 12 | 8 contacts → | ||||
Exact match “Our History in Ottawa.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 13 | 7 contacts → | ||||
Exact match “Nearly fifty years ago we set out to make a different kind of service company.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 14 | 7 contacts → | ||||
Exact match “Ottawa’s heating and cooling specialists.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 15 | 6 contacts → | ||||
Exact match “Furnace Repair Installation & Air Conditioning Replacement - Ottawa, ON - Call Ambassador Dearie HVAC Inc.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 16 | 6 contacts → | ||||
Exact match “Coolheat Comfort Systems is a fully licensed HVAC company based in Ottawa, Ontario.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 17 | 6 contacts → | ||||
Exact match “Established in 2008, our company specializes in mechanical commercial/industrial thermal insulation.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 18 | 5 contacts → | ||||
Exact match “The original Francis Fuels, Still Locally Owned and Operated by the Francis Family Since 1933.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 19 | 4 contacts → | ||||
Exact match “If you are in need of heating or cooling services in the Ottawa area, turn to C.I.G.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 20 | 4 contacts → | ||||
Exact match “Visit 2739 Carp Rd, Carp, Ontario, Canada for the best HVAC Ottawa has to offer.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 21 | 1 contacts → | ||||
Exact match “Looking for HVAC Services in Ottawa?” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 22 | 1 contacts → | ||||
Exact match “Great North Heating is a small local business in Ottawa, Ontario.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “heating contractors”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 22 of 43 heating contractors based in Ottawa, Canada
See the full list, filter by size, metro and specialty, and access 155 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Heating contractors based in Ottawa, Canada at a glance
As of Sep 16, 2026Companies by employee count
Email recency for this list is measured across the whole Canada list rather than for Ottawa, so it is reported there. Company counts and contact totals on this page are exact for Ottawa, over 43 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with Ottawa, Canada whose business descriptions match “heating contractors” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 155 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 16, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Heating contractors by metro in Canada
- Heating contractors in Calgary115
- Heating contractors in Toronto87
- Heating contractors in Edmonton59
- Heating contractors in Mississauga47
- Heating contractors in Montreal44
- Heating contractors in Burnaby39
- Heating contractors in Surrey39
- Heating contractors in Winnipeg39
- Heating contractors in Brampton37
- Heating contractors in Vaughan35
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “heating contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many heating contractors are there based in Ottawa, Canada?
RevenueBase identified 43 company matches for heating contractors associated with Ottawa, Canada as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Lar-Mex INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city in Canada has the most heating contractors?
Calgary leads Canada with 115 company records, followed by Toronto (87) and Edmonton (59). Ottawa has 43.
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 155 professional contacts with verified work emails tracked across these 43 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 16, 2026.
Ready to reach these companies? Verified emails and direct dials for all 43 heating contractors based in Ottawa, Canada. Start with a free account, no credit card.
Download this list →Related lists
Heating contractors by geography
- Heating contractors based in Brampton, Canada
- Heating contractors based in Burnaby, Canada
- Heating contractors based in Calgary, Canada
- Heating contractors based in Edmonton, Canada
- Heating contractors based in Mississauga, Canada
- Heating contractors based in Montreal, Canada
- Heating contractors based in Surrey, Canada
- Heating contractors based in Toronto, Canada
- Heating contractors based in Vaughan, Canada
- Heating contractors based in Winnipeg, Canada
- Heating contractors based in Glasgow, United Kingdom
- Heating contractors based in London, United Kingdom
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Heating contractors based in Brampton, Canada
- Heating contractors based in Burnaby, Canada
- Heating contractors based in Calgary, Canada
- Heating contractors based in Edmonton, Canada
- Heating contractors based in Mississauga, Canada
- Heating contractors based in Montreal, Canada
Company intelligence · public preview
Top 22 heating contractors based in Ottawa, Canada
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 43 matching company records for heating contractors based in Ottawa, Canada, with 354 tracked contacts and 155 verified work emails.
This public preview shows 22 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 16, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 22 heating contractors based in Ottawa, Canada
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Lar-Mex INClar-mex.comHQ: Ottawa, ON, CanadaReported employees: 51-200 | Ottawa, ON, Canada | 51-200 | Exact match | 57 contacts → |
“Lar-Mex with a staff of over 200 employees has been providing heating, ventilation, plumbing and air conditioning (HVAC) services to the National Capital region for over 30 years.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  TPH Plumbing & Heatingtphinc.caHQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 40 contacts → |
“Since 1986, we have been providing commercial, industrial and institutional piping, plumbing and heating services to Ottawa and Eastern Ontario.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Climate Works Heating, Cooling & Plumbingclimateworks.caHQ: Ottawa, ON, CanadaReported employees: 51-200 | Ottawa, ON, Canada | 51-200 | Exact match | 35 contacts → |
“Climate Works is a leading mechanical service provider based in Ottawa, delivering professional heating, cooling, ventilation, and plumbing solutions to commercial, industrial…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Francis Plumbing Heating & Coolingfrancisplumbing.comHQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 17 contacts → |
“For over 90 years the Francis Plumbing & Heating team has continued to provide ongoing excellence in water services including plumbing, heating, radiant floor heating, boilers…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Total Hvactotalhvac.comHQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 15 contacts → |
“Total HVAC has been a leader in the supply of commercial heating, ventilation, and air-conditioning equipment in Eastern Ontario and Western Quebec for 25 years.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Anchor Home Comfortanchorhomecomfort.comHQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 14 contacts → |
“Anchor is a residential heating and cooling contractor specializing in replacement, repair and maintenance of home comfort systems.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Reliable Home Environmentreliablehome.caHQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 13 contacts → |
“Reliable Home Environment has a strong reputation in Ottawa for providing signature custom installations of heating and cooling products that consistently exceed our customers’…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Baxtec Mechanical Servicesbaxtec.comHQ: Ottawa, ON, CanadaReported employees: 51-200 | Ottawa, ON, Canada | 51-200 | Exact match | 11 contacts → |
“Baxtec Mechanical Services is a dynamic and growing commercial mechanical contractor in the Ottawa area.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Team Hardingteamhardingcomfort.comHQ: Ottawa, ON, CanadaReported employees: 51-200 | Ottawa, ON, Canada | 51-200 | Exact match | 11 contacts → |
“Ottawa's Source For Total Home Comfort Since 1994 Heating • Cooling • Fireplaces • BBQs & Grills” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Longhill Energy Productslonghill.caHQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 10 contacts → |
“For over four decades, Longhill Energy has become known for its “niche” specialty products in Ottawa and across Ontario.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Harry's Home Comfortharryshome.caHQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 8 contacts → |
“Harrys Home Comfort is a leading heating and cooling business that serves Ottawa and surrounding area.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Premier Comfort Heating & Cooling LTDpremiercomfort.caHQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 8 contacts → |
“Our History in Ottawa.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  JD Swallow Heating And Cooling Contractorsjdswallow.comHQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 7 contacts → |
“Nearly fifty years ago we set out to make a different kind of service company.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Ottawa Home Servicesottawahomeservices.caHQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 7 contacts → |
“Ottawa’s heating and cooling specialists.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Ambassador Dearie Hvacambassadorhvac.comHQ: Ottawa, ON, CanadaReported employees: 201-500 | Ottawa, ON, Canada | 201-500 | Exact match | 6 contacts → |
“Furnace Repair Installation & Air Conditioning Replacement - Ottawa, ON - Call Ambassador Dearie HVAC Inc.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Coolheat Comfort Systemscoolheatcomfort.caHQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 6 contacts → |
“Coolheat Comfort Systems is a fully licensed HVAC company based in Ottawa, Ontario.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Thermal Systems Mechanical Insulation Services LTDthermal4systems.com HQ: Ottawa, CanadaReported employees: 11-50 | Ottawa, Canada | 11-50 | Exact match | 6 contacts → |
“Established in 2008, our company specializes in mechanical commercial/industrial thermal insulation.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Francis Fuels LTDfrancisfuels.com HQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 5 contacts → |
“The original Francis Fuels, Still Locally Owned and Operated by the Francis Family Since 1933.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | CIG Heating & AIR Conditioning LTDcigheating.ca HQ: Ottawa, ON, CanadaReported employees: 1-10 | Ottawa, ON, Canada | 1-10 | Exact match | 4 contacts → |
“If you are in need of heating or cooling services in the Ottawa area, turn to C.I.G.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Shouldice Mechanicalshouldicemechanical.com HQ: Ottawa, ON, CanadaReported employees: 1-10 | Ottawa, ON, Canada | 1-10 | Exact match | 4 contacts → |
“Visit 2739 Carp Rd, Carp, Ontario, Canada for the best HVAC Ottawa has to offer.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Capital City Heating & Coolingcapitalcityheatingandcooling.com HQ: Ottawa, ON, CanadaReported employees: 1-10 | Ottawa, ON, Canada | 1-10 | Exact match | 1 contacts → |
“Looking for HVAC Services in Ottawa?” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Great North Heatinggreatnorthheating.caHQ: Ottawa, ON, CanadaReported employees: 1-10 | Ottawa, ON, Canada | 1-10 | Exact match | 1 contacts → |
“Great North Heating is a small local business in Ottawa, Ontario.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 22 of 43 company matches
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Heating contractors: dataset insights
September 16, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
43 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole Canada list rather than for Ottawa, so it is reported there. Company counts and contact totals on this page are exact for Ottawa, over 43 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 16, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Heating contractors by metro in Canada
- Heating contractors in Calgary115
- Heating contractors in Toronto87
- Heating contractors in Edmonton59
- Heating contractors in Mississauga47
- Heating contractors in Montreal44
- Heating contractors in Burnaby39
- Heating contractors in Surrey39
- Heating contractors in Winnipeg39
- Heating contractors in Brampton37
- Heating contractors in Vaughan35
Questions about this company list
What does Exact match mean for heating contractors?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many heating contractors did RevenueBase find based in Ottawa, Canada?
The saved snapshot records 43 matching company records, 354 tracked contacts and 155 verified emails. The public preview displays 22 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 16, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Heating contractors by geography
- Heating contractors based in Brampton, Canada
- Heating contractors based in Burnaby, Canada
- Heating contractors based in Calgary, Canada
- Heating contractors based in Edmonton, Canada
- Heating contractors based in Mississauga, Canada
- Heating contractors based in Montreal, Canada
- Heating contractors based in Surrey, Canada
- Heating contractors based in Toronto, Canada
- Heating contractors based in Vaughan, Canada
- Heating contractors based in Winnipeg, Canada
- Heating contractors based in Glasgow, United Kingdom
- Heating contractors based in London, United Kingdom
Cite this list
RevenueBase Data Team. Top 22 heating contractors based in Ottawa, Canada. Snapshot: September 16, 2026. https://revenuebase.ai/companies/heating-contractors/canada/ottawa.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Heating contractors based in Brampton, Canada
- Heating contractors based in Burnaby, Canada
- Heating contractors based in Calgary, Canada
- Heating contractors based in Edmonton, Canada
- Heating contractors based in Mississauga, Canada
- Heating contractors based in Montreal, Canada
Company intelligence · public preview
Top 22 heating contractors based in Ottawa, Canada
RevenueBase records 43 matching company records for heating contractors based in Ottawa, Canada, with 354 tracked contacts and 155 verified work emails.
This public preview shows 22 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 16, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 22 heating contractors based in Ottawa, Canada
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Lar-Mex INClar-mex.com HQ: Ottawa, ON, CanadaReported employees: 51-200 | Ottawa, ON, Canada | 51-200 | Exact match | 57 contacts → |
“Lar-Mex with a staff of over 200 employees has been providing heating, ventilation, plumbing and air conditioning (HVAC) services to the National Capital region for over 30 years.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | TPH Plumbing & Heatingtphinc.ca HQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 40 contacts → |
“Since 1986, we have been providing commercial, industrial and institutional piping, plumbing and heating services to Ottawa and Eastern Ontario.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Climate Works Heating, Cooling & Plumbingclimateworks.ca HQ: Ottawa, ON, CanadaReported employees: 51-200 | Ottawa, ON, Canada | 51-200 | Exact match | 35 contacts → |
“Climate Works is a leading mechanical service provider based in Ottawa, delivering professional heating, cooling, ventilation, and plumbing solutions to commercial, industrial…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Francis Plumbing Heating & Coolingfrancisplumbing.com HQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 17 contacts → |
“For over 90 years the Francis Plumbing & Heating team has continued to provide ongoing excellence in water services including plumbing, heating, radiant floor heating, boilers…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Total Hvactotalhvac.com HQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 15 contacts → |
“Total HVAC has been a leader in the supply of commercial heating, ventilation, and air-conditioning equipment in Eastern Ontario and Western Quebec for 25 years.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Anchor Home Comfortanchorhomecomfort.com HQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 14 contacts → |
“Anchor is a residential heating and cooling contractor specializing in replacement, repair and maintenance of home comfort systems.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Reliable Home Environmentreliablehome.ca HQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 13 contacts → |
“Reliable Home Environment has a strong reputation in Ottawa for providing signature custom installations of heating and cooling products that consistently exceed our customers’…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Baxtec Mechanical Servicesbaxtec.com HQ: Ottawa, ON, CanadaReported employees: 51-200 | Ottawa, ON, Canada | 51-200 | Exact match | 11 contacts → |
“Baxtec Mechanical Services is a dynamic and growing commercial mechanical contractor in the Ottawa area.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Team Hardingteamhardingcomfort.com HQ: Ottawa, ON, CanadaReported employees: 51-200 | Ottawa, ON, Canada | 51-200 | Exact match | 11 contacts → |
“Ottawa's Source For Total Home Comfort Since 1994 Heating • Cooling • Fireplaces • BBQs & Grills” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Longhill Energy Productslonghill.ca HQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 10 contacts → |
“For over four decades, Longhill Energy has become known for its “niche” specialty products in Ottawa and across Ontario.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Harry's Home Comfortharryshome.ca HQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 8 contacts → |
“Harrys Home Comfort is a leading heating and cooling business that serves Ottawa and surrounding area.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Premier Comfort Heating & Cooling LTDpremiercomfort.ca HQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 8 contacts → |
“Our History in Ottawa.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | JD Swallow Heating And Cooling Contractorsjdswallow.com HQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 7 contacts → |
“Nearly fifty years ago we set out to make a different kind of service company.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Ottawa Home Servicesottawahomeservices.ca HQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 7 contacts → |
“Ottawa’s heating and cooling specialists.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Ambassador Dearie Hvacambassadorhvac.com HQ: Ottawa, ON, CanadaReported employees: 201-500 | Ottawa, ON, Canada | 201-500 | Exact match | 6 contacts → |
“Furnace Repair Installation & Air Conditioning Replacement - Ottawa, ON - Call Ambassador Dearie HVAC Inc.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Coolheat Comfort Systemscoolheatcomfort.ca HQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 6 contacts → |
“Coolheat Comfort Systems is a fully licensed HVAC company based in Ottawa, Ontario.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Thermal Systems Mechanical Insulation Services LTDthermal4systems.com HQ: Ottawa, CanadaReported employees: 11-50 | Ottawa, Canada | 11-50 | Exact match | 6 contacts → |
“Established in 2008, our company specializes in mechanical commercial/industrial thermal insulation.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Francis Fuels LTDfrancisfuels.com HQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 5 contacts → |
“The original Francis Fuels, Still Locally Owned and Operated by the Francis Family Since 1933.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | CIG Heating & AIR Conditioning LTDcigheating.ca HQ: Ottawa, ON, CanadaReported employees: 1-10 | Ottawa, ON, Canada | 1-10 | Exact match | 4 contacts → |
“If you are in need of heating or cooling services in the Ottawa area, turn to C.I.G.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Shouldice Mechanicalshouldicemechanical.com HQ: Ottawa, ON, CanadaReported employees: 1-10 | Ottawa, ON, Canada | 1-10 | Exact match | 4 contacts → |
“Visit 2739 Carp Rd, Carp, Ontario, Canada for the best HVAC Ottawa has to offer.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Capital City Heating & Coolingcapitalcityheatingandcooling.com HQ: Ottawa, ON, CanadaReported employees: 1-10 | Ottawa, ON, Canada | 1-10 | Exact match | 1 contacts → |
“Looking for HVAC Services in Ottawa?” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Great North Heatinggreatnorthheating.ca HQ: Ottawa, ON, CanadaReported employees: 1-10 | Ottawa, ON, Canada | 1-10 | Exact match | 1 contacts → |
“Great North Heating is a small local business in Ottawa, Ontario.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 22 of 43 company matches
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Heating contractors: dataset insights
September 16, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
43 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole Canada list rather than for Ottawa, so it is reported there. Company counts and contact totals on this page are exact for Ottawa, over 43 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 16, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Heating contractors by metro in Canada
- Heating contractors in Calgary115
- Heating contractors in Toronto87
- Heating contractors in Edmonton59
- Heating contractors in Mississauga47
- Heating contractors in Montreal44
- Heating contractors in Burnaby39
- Heating contractors in Surrey39
- Heating contractors in Winnipeg39
- Heating contractors in Brampton37
- Heating contractors in Vaughan35
Questions about this company list
What does Exact match mean for heating contractors?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many heating contractors did RevenueBase find based in Ottawa, Canada?
The saved snapshot records 43 matching company records, 354 tracked contacts and 155 verified emails. The public preview displays 22 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 16, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Heating contractors by geography
- Heating contractors based in Brampton, Canada
- Heating contractors based in Burnaby, Canada
- Heating contractors based in Calgary, Canada
- Heating contractors based in Edmonton, Canada
- Heating contractors based in Mississauga, Canada
- Heating contractors based in Montreal, Canada
- Heating contractors based in Surrey, Canada
- Heating contractors based in Toronto, Canada
- Heating contractors based in Vaughan, Canada
- Heating contractors based in Winnipeg, Canada
- Heating contractors based in Glasgow, United Kingdom
- Heating contractors based in London, United Kingdom
Cite this list
RevenueBase Data Team. Top 22 heating contractors based in Ottawa, Canada. Snapshot: September 16, 2026. https://revenuebase.ai/companies/heating-contractors/canada/ottawa.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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