Company lists · Data refreshed September 2026

Top 25 Weatherization companies based in the United States

Name: Weatherization companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 5,406 companies tracked

RevenueBase identified 5,406 weatherization companies headquartered in the United States as of September 2026 and tracks 40,726 professional contacts across them, including 9,996 with verified work emails. Houston is the largest hub.

This list covers weatherization companies headquartered in the United States, 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 22, 2026.

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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 22, 2026 86% judged on-target in blind review

5,406Companies

40,726Contacts tracked

9,996Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest weatherization companies based in the United States

Ranked by team size

Top 25 of 5,406 weatherization companies based in the United States, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to weatherization companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Truteam	Indirect evidence	Daytona Beach, FL, United StatesHQ checked Sep 22, 2026	10001+	1,561 contacts →
	Indirect evidence “TruTeam is the nation’s largest insulation installer and we also install fireplaces, gutters, garage doors and more.” Source: RevenueBase Database · checked Sep 22, 2026
2	Sears Home Improvement Products	Indirect evidence	Longwood, FL, United StatesHQ checked Sep 22, 2026	10001+	1,119 contacts →
	Indirect evidence “Sears Home Improvement Products and Services, a member of the Sears Holdings Corporation (NASDAQ: SHLD) family of companies, is one of America's largest home improvement companies…” Source: RevenueBase Database · checked Sep 22, 2026
3	Posigen	Indirect evidence	St. Rose, LA, United StatesHQ checked Sep 22, 2026	501-1,000	507 contacts →
	Indirect evidence “PosiGen is the nation's leading residential solar and energy efficiency provider.” Source: RevenueBase Database · checked Sep 22, 2026
4	Homeworks Energy, INC	Indirect evidence	Medford, MA, United StatesHQ checked Sep 22, 2026	201-500	356 contacts →
	Indirect evidence “At HomeWorks Energy, our mission is simple, literally: Energy Efficiency, Simplified.” Source: RevenueBase Database · checked Sep 22, 2026
5	Petro Home Services	Indirect evidence	Stamford, CT, United StatesHQ checked Sep 22, 2026	1,001-5,000	339 contacts →
	Indirect evidence “We're America’s #1 local home heating oil and total home comfort services provider, with over 100 years experience helping customers save and keep comfortable at home.” Source: RevenueBase Database · checked Sep 22, 2026
6	Semper Solaris	Indirect evidence	El Cajon, CA, United StatesHQ checked Sep 22, 2026	501-1,000	337 contacts →
	Indirect evidence “Ranked #1 in Solar + Battery Installation in America by "Solar Power World" Go Solar American Style!#1 Veteran Owned Solar Company in California Solar Panels.” Source: RevenueBase Database · checked Sep 22, 2026
7	Apex Energy Solutions	Indirect evidence	Zionsville, IN, United StatesHQ checked Sep 22, 2026	51-200	260 contacts →
	Indirect evidence “A pioneering dealer for next-generation windows and eco-friendly building products, Apex Energy Solutions serves homeowners who value and love the place they call home.” Source: RevenueBase Database · checked Sep 22, 2026
8	CMC Energy Services	Indirect evidence	Fort Washington, PA, United StatesHQ checked Sep 22, 2026	201-500	252 contacts →
	Indirect evidence “CMC Energy Services is a woman-owned full-service energy efficiency company with nearly 50 years of experience delivering value-based energy conservation services.” Source: RevenueBase Database · checked Sep 22, 2026
9	Star Group, LP	Indirect evidence	Woodbury, NY, United StatesHQ checked Sep 22, 2026	1,001-5,000	249 contacts →
	Indirect evidence “Star Group is a leading energy and related home services provider specializing in the sale of home heating products and services to residential and commercial customers.” Source: RevenueBase Database · checked Sep 22, 2026
10	Reliable Heating & AIR	Indirect evidence	Kennesaw, GA, United StatesHQ checked Sep 22, 2026	201-500	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 22, 2026
11	Tolin Mechanical Systems	Indirect evidence	Denver, CO, United StatesHQ checked Sep 22, 2026	201-500	220 contacts →
	Indirect evidence “Tolin Mechanical is a Leading Energy & Commercial HVAC Services Company.” Source: RevenueBase Database · checked Sep 22, 2026
12	Aeroseal	Indirect evidence	Miamisburg, OH, United StatesHQ checked Sep 22, 2026	51-200	215 contacts →
	Indirect evidence “Aeroseal is a climate tech company on a mission - reduce the world's carbon emissions by 1 gigaton annually.” Source: RevenueBase Database · checked Sep 22, 2026
13	Airtron Heating & AIR Conditioning	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 22, 2026	1,001-5,000	214 contacts →
	Indirect evidence “Airtron has developed itself into one of the leading heating, ventilation, and air conditioning (HVAC) providers.” Source: RevenueBase Database · checked Sep 22, 2026
14	Dalkia Energy Solutions	Indirect evidence	Beverly, MA, United StatesHQ checked Sep 22, 2026	201-500	210 contacts →
	Indirect evidence “Dalkia Energy Solutions, a subsidiary of the EDF (Électricité de France) Group, is a national leader in energy efficiency and sustainability for commercial, industrial, and…” Source: RevenueBase Database · checked Sep 22, 2026
15	Bright Power	Indirect evidence	New York, NY, United StatesHQ checked Sep 22, 2026	51-200	205 contacts →
	Indirect evidence “Bright Power is a leading provider of energy efficiency and decarbonization solutions for the real estate industry.” Source: RevenueBase Database · checked Sep 22, 2026
16	Home Depot USA INC	Indirect evidence	Lisle, IL, United StatesHQ checked Sep 22, 2026	51-200	204 contacts →
	Indirect evidence “HOME DEPOT USA INC is a company based out of 2200 CABOT DR, Lisle, Illinois, United States.” Source: RevenueBase Database · checked Sep 22, 2026
17	HOP Energy LLC	Indirect evidence	Rye Brook, NY, United StatesHQ checked Sep 22, 2026	501-1,000	201 contacts →
	Indirect evidence “About HOP Energy provides residential and commercial energy services from Vermont to Delaware.” Source: RevenueBase Database · checked Sep 22, 2026
18	Coolray Heating, Cooling, Plumbing, Electrical	Indirect evidence	Marietta, GA, United StatesHQ checked Sep 22, 2026	501-1,000	193 contacts →
	Indirect evidence “At Coolray, we base our business principles on people helping people with honest, dependable service you can count on.” Source: RevenueBase Database · checked Sep 22, 2026
19	Haller Enterprises	Indirect evidence	Lititz, PA, United StatesHQ checked Sep 22, 2026	201-500	191 contacts →
	Indirect evidence “Since 1981, Haller Enterprises has proudly served central and eastern Pennsylvania as a leader in heating, cooling, plumbing, and electrical services.” Source: RevenueBase Database · checked Sep 22, 2026
20	Noco Energy Corp	Indirect evidence	Tonawanda, NY, United StatesHQ checked Sep 22, 2026	201-500	176 contacts →
	Indirect evidence “With a rich history spanning more than 90 years, NOCO is a leading full-service energy company servicing customers across Upstate New York.” Source: RevenueBase Database · checked Sep 22, 2026
21	USA Insulation	Indirect evidence	Cleveland, OH, United StatesHQ checked Sep 22, 2026	51-200	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 22, 2026
22	Hill York	Indirect evidence	Dania Beach, FL, United StatesHQ checked Sep 22, 2026	201-500	168 contacts →
	Indirect 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 22, 2026
23	Marshalls INC	Indirect evidence	Lynnwood, WA, United StatesHQ checked Sep 22, 2026	n/a	168 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026
24	ONE Hour Heating & AIR Conditioning	Indirect evidence	Myrtle Beach, SC, United StatesHQ checked Sep 22, 2026	51-200	167 contacts →
	Indirect evidence “We believe in… excellence and heart.” Source: RevenueBase Database · checked Sep 22, 2026
25	Engineered Cooling Services	Indirect evidence	Pensacola, FL, United StatesHQ checked Sep 22, 2026	201-500	160 contacts →
	Indirect evidence “Engineered Cooling Services is the Southeast’s leading energy and HVAC services company headquartered in Pensacola, FL with local offices in Mobile, Montgomery, Birmingham…” Source: RevenueBase Database · checked Sep 22, 2026

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 companies. 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 companies.
Partial evidence: Its own public description names part of weatherization companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name weatherization companies. 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 5,406 weatherization companies based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 9,996 reachable decision-makers.

Free signup · no credit card

View the full list →

Weatherization companies based in the United States at a glance

As of Sep 22, 2026

24.5%Verified-email coverage

7.5Average contacts per company

1-10Median size (employees)

1.1%Largest-city concentration · Houston

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

2,731

11-50

2,052

51-200

467

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 5,406 companies.

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 companies, 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.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “weatherization companies”. 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 companies), 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 companies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
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, 9,996 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 22, 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 companies by metro

Weatherization companies in Houston60
Weatherization companies in New York51
Weatherization companies in Denver46
Weatherization companies in Austin41
Weatherization companies in San Antonio39
Weatherization companies in San Diego35
Weatherization companies in Dallas31
Weatherization companies in Phoenix28
Weatherization companies in Chicago26
Weatherization companies in Las Vegas25
Weatherization companies in Orlando25

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 companies, 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 companies are there based in the United States?

RevenueBase identified 5,406 weatherization companies headquartered in the United States 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?

Truteam, headquartered in Daytona Beach, tops this list with the largest team on record.

Which city has the most weatherization companies?

Houston leads with 60 headquartered companies, followed by New York (51) and Denver (46).

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 9,996 verified decision-maker contacts tracked across these 5,406 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 22, 2026.

Ready to reach these companies? Verified emails and direct dials for all 5,406 weatherization companies based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

Weatherization companies by geography

Browse the directory

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.