50 Best Heating, Ventilation, and Air Conditioning (HVAC) Companies to Watch in 2026

The most prominent heating, ventilation, and air conditioning (hvac) companies ranked by global prominence, funding activity, and market position. Showing the top 50 out of 3,292 companies tracked on Fsome.

3,292
Total Companies
$18.1B
Total Funding
$5.5M
Avg Funding
Houston
Top Location
# Company Location Employees Total Funding Last Round Last Funded
1
Quilt
Quilt provides a home climate system featuring ductless heat pumps, room control…
Redwood City 11 - 50 $62.0M Series B 2025-12-08
2
Endra
Endra builds an AI-powered platform that automates the design of mechanical, ele…
Östermalm 1 - 10 $23.4M Seed 2025-12-17
3
Nimlas Group
Nimlas Group is a technical installation and building services company that prov…
Solna 1K - 5K $409.5M Debt Financing 2025-06-18
4
Bluon
Bluon is a mobile app and support platform utilized by one-third of all HVAC tec…
Irvine 51 - 100 $43.2M Series Unknown 2023-04-05
5
Aira
Aira is a direct-to-consumer clean energy-tech company that provides heat pumps …
Stockholm 1K - 5K $709.7M Series Unknown 2025-08-11
6
Service Logic
Service Logic is a privately held Energy and HVAC/Mechanical Services companies …
Charlotte 1K - 5K $206.0M Private Equity 2025-12-16
7
Wisetack
Wisetack is a financial platform that offers SaaS service payment options for ro…
San Francisco 101 - 250 $109.4M Series Unknown 2025-09-11
8
Infinitum
Infinitum is setting the bar for the next generation of motors to be better for …
Austin 101 - 250 $457.7M Grant 2024-10-22
9
R-Zero
Smart building solutions that automates building and workforce efficiencies, to …
San Francisco 51 - 100 $170.0M Series C 2023-02-16
10
Copeland
Copeland manufactures heating, ventilation, air conditioning, and refrigeration …
Sidney c 10001 max $3.5B Secondary Market 2024-06-06
11
Blue Frontier
Blue Frontier specializes in air conditioning systems designed for sustainabilit…
Boca Raton 11 - 50 $38.1M Series Unknown 2024-01-05
12
Jetson
Jetson Home focused on residential electrification, replacing gas furnaces with …
North Vancouver 51 - 100 $55.0M Series A 2026-01-20
13
Lios
Empowering the building of tomorrow’s quieter world – eradicating noise pollutio…
Dublin 11 - 50 $9.8M Series Unknown 2025-06-24
14
tado°
Tado° develops smart heating and cooling control systems designed to optimize en…
Munich 251 - 500 $250.2M Corporate Round 2025-03-17
15
enshift
enshift is a partner for energy transformations of large investment properties.
Baar 51 - 100 $27.4M Series A 2025-11-27
16
Helix Earth Technologies
Helix Earth is applying our NASA-born technology to improve commercial products …
Houston 11 - 50 $18.4M Seed 2026-03-26
17
Optimist
Optimist provides technology-led cooling solutions.
Delhi 11 - 50 $12.0M Seed 2026-01-22
18
WaHa
Revolutionary platform for solid desiccant regeneration improves energy efficien…
Fremont 11 - 50 $21.7M Series A 2025-07-10
19
FLUIX
FLUIX is an Enterprise AI CoPilot that saves critical buildings such as data cen…
San Francisco 1 - 10 $490K Pre Seed 2024-01-15
20
Monaire
Monaire is an electronics manufacturing company that offers HVAC and refrigerati…
Waltham 11 - 50 $7.6M Seed 2024-03-20
21
Mojave Energy Systems
Mojave Energy Systems produces novel liquid desiccant systems for HVAC.
Sunnyvale 11 - 50 $29.5M Debt Financing 2025-03-01
22
MicroEra Power
Resilient, efficient Thermal Energy Storage for C&I buildings
Rochester 11 - 50 $933K Non Equity Assistance 2026-03-25
23
Kelso Industries
Kelso Industries is a conglomeration of market-leading companies and their execu…
Phoenix 1K - 5K $50.0M Private Equity 2023-11-27
24
Linear Labs
Smart Electric Motors Systems for Electric Vehicles, HVAC and Robotics
Fort Worth 11 - 50 $119.2M Series A 2022-03-02
25
Curate Labs
AI Agentic Assistant delivered by SMS to your HVAC and Solar technicians to redu…
Lehi 1 - 10 $50K Grant 2024-11-22
26
Hafslund Oslo Celsio
Hafslund Oslo Celsio produce and distribute district heating and district coolin…
Oslo 101 - 250 $99.8M Debt Financing 2025-11-13
27
Pascal
Pascal is a technological company that is developing a new class of solid refrig…
Cambridge 1 - 10 $8.0M Seed 2024-05-08
28
CoolSys
CoolSys is a market refrigeration and HVAC companies.
Anaheim 1K - 5K $39.5M Debt Financing 2025-09-04
29
Forge
Forge is a contractor that delivers heat pump installation services.
Boston 51 - 100 $17.0M Series A 2021-12-22
30
SmartAC.com
SmartAC.com is digitizing the HVAC industry to perfect the experience of home co…
Houston 11 - 50 $45.4M Series Unknown 2025-04-21
31
MAGNOTHERM
MAGNOTHERM develops magnetocaloric cooling systems and solid-state materials to …
Darmstadt 11 - 50 $12.7M Non Equity Assistance 2024-03-26
32
enVerid Systems
enVerid Systems provides indoor air quality and HVAC energy-saving technologies …
Westwood 11 - 50 $38.7M Series Unknown 2023-05-17
33
Wrench Group
Wrench Group offers home repair, replacement and maintenance services specializi…
Marietta 1 - 10 $1.3B Debt Financing 2025-09-12
34
Stellar
Stellar maintains, repairs, and improves its clients' real estate properties.
Dallas 51 - 100 $30.0M Series B 2021-09-27
35
Sera Systems
Sera Systems is an innovative field service management platform helping HVAC com…
Dallas 11 - 50 $11.7M Series B 2023-05-25
36
WorkHero
WorkHero is an AI-powered back office for small HVAC contractors combining indus…
Boston 11 - 50 $5.0M Seed 2025-10-27
37
Arch
Arch provides an AI-driven marketing platform tailored for HVAC contractors.
San Francisco 1 - 10 $6.2M Seed 2024-02-15
38
Carrier
Carrier is an industrial engineering company that offers heating, ventilating, a…
Palm Beach Gardens c 10001 max $5.0B Post Ipo Debt 2023-11-15
39
Exergyn
Exergyn is a clean-tech company that develops solid state HVAC technology (heat …
Glasnevin 11 - 50 $39.6M Grant 2025-09-25
40
BuildingLens
We democratize Facility Management for Priority Populations.
Portland 1 - 10 $250K Non Equity Assistance 2023-01-09
41
Zephyr
Zephyr is a platform for technology-enabled home services developed with the tec…
New York 51 - 100 $60.0M Private Equity 2024-10-21
42
Resync
Ai driven Intelligent Energy Cloud Platform for smart buildings and systems with…
Singapore 11 - 50 $5.1M Series A 2023-07-01
43
Service Fusion
Service Fusion provides a suite of management software applications to HVAC, plu…
Irving 51 - 100 $10.0M Debt Financing 2020-08-17
44
Thermosphr
Energy autopilot for commercial buildings
Berlin 11 - 50 $3.4M Seed 2024-01-06
45
BOXT
BOXT is an online platform that offers boilers, air conditioning, and electric v…
Leeds 51 - 100 $22.5M Private Equity 2022-01-26
46
Trellis Air
Trellis Air is making commercially viable membrane-based dehumidifiers.
Somerville 11 - 50 $6.6M Seed 2025-03-20
47
Kassel Mechanical Holdings
Kassel Mechanical Holdings offers trade contracting services catering to the com…
Columbus 1K - 5K $40.0M Private Equity 2025-04-10
48
ZenTrades
ZenTrades is a company that provides configurable field service management softw…
New York 11 - 50 $100K Pre Seed 2024-02-09
49
Proxiserve
A leader in housing services in France.
Levallois-perret 1 - 10 $623.8M Debt Financing 2025-01-15
50
Air2O
Air2O manufactures and supplies hybrid air conditioning systems and sustainable …
Phoenix 51 - 100 $14.1M Corporate Round 2023-03-22