Company lists · Data refreshed September 2026
Top 25 Weatherization contractors worldwide
RevenueBase identified 5,436 weatherization contractors worldwide as of September 2026 and tracks 36,274 professional contacts across them, including 8,796 with verified work emails and 0 with mobile numbers. The United States is the largest market and London the largest hub.
This list covers weatherization contractors worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 2026. Country and city lists for weatherization contractors follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 25 largest weatherization contractors worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 781 contacts → | ||||
Indirect evidence “Sinds het ontstaan in 1947 is Feenstra marktleider in installatietechniek met een nationale dekking.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 415 contacts → | ||||
Indirect evidence “We are powered by the best people in the industry.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 376 contacts → | ||||
Indirect evidence “Kbane est la 1ère enseigne en France, dédiée à la maison performante.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 356 contacts → | ||||
Indirect evidence “At HomeWorks Energy, our mission is simple, literally: Energy Efficiency, Simplified.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 231 contacts → | ||||
Indirect evidence “Since 1978, Reliable Heating & Air has been serving all of Metro Atlanta's communities offering heating, cooling, plumbing and electrical services, indoor air quality, duct…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 206 contacts → | ||||
Indirect evidence “Greenfoot Energy Solutions was established in 2014 by a group of energy experts dedicated to improving energy efficiency in Atlantic Canada.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 198 contacts → | ||||
Indirect evidence “Eurocombles, isoler vos combles, garages et caves à seulement 1€!” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 193 contacts → | ||||
Partial evidence “Founded in EDA Contractors holds an extensive portfolio and experience on the exterior envelope of commercial, institutional, and industrial buildings.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 186 contacts → | ||||
Partial evidence “L&S Mechanical began as a Dallas-based contractor in 1985 and has grown over the years to have six locations out of Dallas, Fort Worth, Houston, San Antonio, and Austin.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 169 contacts → | ||||
Indirect evidence “Established in 1977 and incorporated in 1985, USA Insulation has saved thousands of customers millions of dollars on their heating and air conditioning bills.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 168 contacts → | ||||
Partial evidence “Hill York is a full service contractor that offers a full array of energy efficient air-conditioning services from concept to completion, maintenance to repair and everything in…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 168 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 159 contacts → | ||||
Partial evidence “Founded in 1954, Newcomb and Company is a full-service mechanical contractor providing customers in the commercial, residential, and industrial sectors with innovative…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 159 contacts → | ||||
Indirect evidence “For nearly a century, GSM Services has built its reputation on reliability, honesty, expert service, and high-quality workmanship.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 142 contacts → | ||||
Indirect evidence “GLB ist die verlässliche Partnerin für Lebensräume – Die Expertin für energieeffiziente Sanierung, Neubau, Einfamilien- oder Mehrfamilienhaus, Gewerbe- oder Industriebau…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 142 contacts → | ||||
Partial evidence “Arpi’s Industries, a full service mechanical contractor, provides heating, air conditioning, ventilation, plumbing, and air quality solutions to residential and commercial markets.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 129 contacts → | ||||
Indirect evidence “Willdan Performance Engineering specializes in energy and infrastructure improvement projects through design-build and performance contracting.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 127 contacts → | ||||
Indirect evidence “Founded in 1980, Great Northern Insulation is Ontario's leading building envelope service provider, for the new construction and retrofit markets across commercial, institutional…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 120 contacts → | ||||
Indirect evidence “Since 1972, The K Company has been setting the standard in commercial, residential and industrial heating, air conditioning, ventilation and refrigeration systems.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 110 contacts → | ||||
Partial evidence “Jon Wayne Service Company is San Antonio's largest residential heating, air conditioning, plumbing, and electrical contractor.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 109 contacts → | ||||
Indirect evidence “There isn't one way to do things, but there is a right way.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 108 contacts → | ||||
Partial evidence “Correct Contract Services (CCS) is a trusted main contractor for compliance and energy services, expertly serving social housing landlords across the UK.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 106 contacts → | ||||
Partial evidence “Schwob Energy Services is a General Construction Contractor that is consistently recognized for our use of proven world class construction methods in building energy related…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 106 contacts → | ||||
Indirect evidence “Reno Energy est une entreprise spécialisée dans le secteur de la rénovation énergétique mais aussi dans la nouvelle construction.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 105 contacts → | ||||
Indirect evidence “Chaparral Insulation has proudly served the mechanical insulation industry for more than 30 years.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: weatherization contractors. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names weatherization contractors.
- Partial evidence
- Its own public description names part of weatherization contractors, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name weatherization contractors. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 5,436 weatherization contractors worldwide
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 8,796 reachable decision-makers.
Free signup · no credit card
Weatherization contractors worldwide at a glance
As of Sep 19, 2026Companies by employee count
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among weatherization contractors, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- Coverage
- 16 countries, largest first: the United States, France, the United Kingdom, Canada, the Netherlands, Italy, Germany, Spain, Belgium, Australia and 6 more. Country and city lists for weatherization contractors are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “weatherization contractors”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names weatherization contractors), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among weatherization contractors, and records with no verified work email.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- 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 listed company carries at least one verified work email, 8,796 across the full list. 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 19, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Weatherization contractors by location
19 lists · largest firstEvery Weatherization contractors list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Weatherization contractors based in the United States3,045
- Weatherization contractors based in France652
- Weatherization contractors based in the United Kingdom468
- Weatherization contractors based in Canada339
- Weatherization contractors based in the Netherlands225
- Weatherization contractors based in Italy134
- Weatherization contractors based in Germany127
- Weatherization contractors based in Spain94
- Weatherization contractors based in Belgium86
- Weatherization contractors based in Australia70
- Weatherization contractors based in Ireland50
- Weatherization contractors based in Sweden38
- Weatherization contractors based in New Zealand29
- Weatherization contractors based in Switzerland28
- Weatherization contractors based in Denmark26
- Weatherization contractors based in Norway25
Cities
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names weatherization contractors, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many weatherization contractors are there worldwide?
RevenueBase identified 5,436 weatherization contractors worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Feenstra, headquartered in Lelystad, tops this list with the largest team on record.
Which country has the most weatherization contractors?
The United States leads with 3,045 companies, followed by France (652) and the United Kingdom (468). Every weatherization contractors list by country and city is linked on this page.
Which city has the most weatherization contractors?
London leads with 41 headquartered companies, followed by Paris (38) and Houston (29).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 8,796 verified decision-maker contacts tracked across these 5,436 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 2026.
Ready to reach these companies? Verified emails and direct dials for all 5,436 weatherization contractors worldwide. Start with a free account, no credit card.
Download this list →Related lists
Browse the directory
Browse: Companies home · Lists by location · New lists
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 Smart Search, 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.