Company lists · Data refreshed September 2026

Top 25 Retrofit contractors based in Denver, United States

Name: Retrofit contractors based in Denver, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 48 companies tracked

RevenueBase identified 48 company matches for retrofit contractors associated with Denver, United States as of September 2026 and tracks 553 professional contacts across them, including 222 with verified work emails. Across the United States, New York is the largest hub for this category (129 companies); Denver has 48.

This list covers company matches for retrofit contractors associated with Denver, United States, 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 17, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 17, 2026 How this list was built

48Companies

553Contacts tracked

222Verified emails

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The 25 largest retrofit contractors based in Denver, United States

Ranked by team size

Top 25 of 48 company matches for retrofit contractors based in Denver, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Tolin Mechanical Systems	Exact match	Denver, CO, United StatesHQ recorded Sep 17, 2026	201-500	220 contacts →
	Exact match “Tolin Mechanical is a Leading Energy & Commercial HVAC Services Company.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	Iconergy, LTD	Exact match	Denver, CO, United StatesHQ recorded Sep 17, 2026	11-50	47 contacts →
	Exact match “Iconergy is a leading energy services company committed to revolutionizing energy management.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	Legacy Mechanical, INC	Exact match	Denver, CO, United StatesHQ recorded Sep 17, 2026	51-200	36 contacts →
	Exact match “A building's legacy endures with high quality, energy-smart, and budget-wise HVAC, electrical and plumbing systems.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	MAI Mechanical LLC	Exact match	Denver, CO, United StatesHQ recorded Sep 17, 2026	51-200	35 contacts →
	Exact match “Since 1978, Colorado based Mai Mechanical Corporation has grown to be one of the premier multi-family plumbing and mechanical subcontractors in the state.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	WMS	Exact match	Denver, CO, United StatesHQ recorded Sep 17, 2026	51-200	27 contacts →
	Exact match “Western Mechanical Solutions, LLC focuses on High Quality, Energy Efficient, Engineered products to minimize the energy use of buildings through innovative application of…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	Odin Electric	Exact match	Denver, CO, United StatesHQ recorded Sep 17, 2026	51-200	24 contacts →
	Exact match “Odin Electric is a Colorado based commercial electrical contractor.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	Choice Electric	Exact match	Denver, CO, United StatesHQ recorded Sep 17, 2026	11-50	17 contacts →
	Exact match “Choice Electric Corp is an electrical contractor based out of Denver, CO.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	Green IS Greater	Exact match	Denver, CO, United StatesHQ recorded Sep 17, 2026	11-50	11 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	Reenergizeco	Exact match	Denver, CO, United StatesHQ recorded Sep 17, 2026	11-50	10 contacts →
	Exact match “REenergizeCO helps Colorado homeowners save money, earn rebates, and make their homes more comfortable with expert energy upgrades.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	FMC Services	Exact match	Denver, CO, United StatesHQ recorded Sep 17, 2026	11-50	10 contacts →
	Exact match “FMC Services (formerly known as FMC Lighting and Fluorescent Maintenance Co.) is a commercial lighting and electrical contractor services company based out of Denver, Colorado.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	Abco Contracting, INC	Exact match	Denver, CO, United StatesHQ recorded Sep 17, 2026	51-200	9 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	Advanced Hydronics, INC	Exact match	Denver, CO, United StatesHQ recorded Sep 17, 2026	11-50	7 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	Broomhall Brothers Mechanical Contractors	Exact match	Denver, CO, United StatesHQ recorded Sep 17, 2026	11-50	5 contacts →
	Exact match “Broomhall Brothers Mechanical Contractors has been providing mechanical building services to the multi-family, commercial and institutional markets in the Denver-Metro area since…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	Timberline Reconstruction, LLC	Exact match	Denver, CO, United StatesHQ recorded Sep 17, 2026	11-50	5 contacts →
	Exact match “General Contractor servicing Colorado and the Front Range.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	Level UP Insulation	Exact match	Denver, CO, United StatesHQ recorded Sep 17, 2026	1-10	2 contacts →
	Exact match “At Level Up Insulation, we elevate home comfort by merging expertise in insulation, pest control, and energy efficiency, ensuring every homeowner feels safe, satisfied, and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	Jones Custom Builders	Exact match	Denver, CO, United StatesHQ recorded Sep 17, 2026	11-50	2 contacts →
	Exact match “Jones Custom Builders, Inc.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	Simple Home Energy Solutions	Exact match	Denver, CO, United StatesHQ recorded Sep 17, 2026	1-10	2 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	Koala Insulation Of Southeast Denver	Exact match	Denver, CO, United StatesHQ recorded Sep 17, 2026	1-10	2 contacts →
	Exact match “Koala Insulation of Southeast Denver is an insulation contractor providing high-quality insulation services to homeowners, contractors and property owners.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	KCA Companies INC	Exact match	Denver, CO, United StatesHQ recorded Sep 17, 2026	1-10	1 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	Quality Climate Control, LLC	Exact match	Denver, CO, United StatesHQ recorded Sep 17, 2026	1-10	1 contacts →
	Exact match “Quality Climate Control was initially started to be a haven for the hard worker.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	Insulation Nation	Exact match	Denver, CO, United StatesHQ recorded Sep 17, 2026	1-10	1 contacts →
	Exact match “Welcome to Insulation Nation, your trusted partner for all your insulation needs.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	Building While Giving	Exact match	Denver, CO, United StatesHQ recorded Sep 17, 2026	1-10	1 contacts →
	Exact match “We specialize in ADU's/Additions, Kitchen & Bath Remodels, Basement Finishing, New Homes, and Commercial Tenant Improvements.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	Rocky Mountain Lighting	Exact match	Denver, United StatesHQ recorded Sep 17, 2026	1-10	1 contacts →
	Exact match “Under new ownership, Rocky Mountain Lighting continues to deliver class leading retrofit, value driven, and niche lighting solutions.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	Skyline Lighting & Electric	Exact match	Denver, CO, United StatesHQ recorded Sep 17, 2026	1-10	1 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	Integrated Home Energy	Exact match	Denver, United StatesHQ recorded Sep 17, 2026	1-10	1 contacts →
	Exact match “Integrated Home Energy is a Denver-based company that provides in-depth analysis of energy use and comprehensive solutions-from living space to lifestyle-to make your home as…” Recorded in the RevenueBase company graph · Sep 17, 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 “retrofit 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 25 of 48 retrofit contractors based in Denver, United States

See the full list, filter by size, metro and specialty, and access 222 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Retrofit contractors based in Denver, United States at a glance

As of Sep 17, 2026

40.1%Verified-email coverage

11.5Average contacts per company

11-50Median size (employees)

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured across the whole United States list rather than for Denver, so it is reported there. Company counts and contact totals on this page are exact for Denver, over 48 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 Denver, United States whose business descriptions match “retrofit 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 222 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 17, 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.

Retrofit contractors by metro in the United States

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 “retrofit contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many retrofit contractors are there based in Denver, United States?

RevenueBase identified 48 company matches for retrofit contractors associated with Denver, United States 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?

Tolin Mechanical Systems tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most retrofit contractors?

New York leads the United States with 129 company records, followed by Houston (72) and Los Angeles (72). Denver has 48.

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 222 professional contacts with verified work emails tracked across these 48 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 17, 2026.

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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.