Top 14 HVAC startups in USA
May 26, 2026
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19
1
Funding: $266.6M
BlocPower is offering smart, all electric heating, cooling, and hot water systems to building owners for no money down.
BlocPower is offering smart, all electric heating, cooling, and hot water systems to building owners for no money down.
2
Funding: $214.9M
Phononic innovates solid state semiconductor solutions that displace compressors, heat sinks and fans for cooling & heating
Phononic innovates solid state semiconductor solutions that displace compressors, heat sinks and fans for cooling & heating
3
Funding: $174.5M
Dandelion is an Alphabet spinout that develops geothermal heating, air-conditioning and cooling systems
Dandelion is an Alphabet spinout that develops geothermal heating, air-conditioning and cooling systems
4
Funding: $74.9M
75F is a predictive and proactive IoT-based building automation system that addresses HVAC, lighting, and equipment control needs.
75F is a predictive and proactive IoT-based building automation system that addresses HVAC, lighting, and equipment control needs.
5
Funding: $62M
Quilt produces ductless, dual-zone home heat pumps controlled by artificial intelligence. Quilt's indoor and outdoor units, Dial and mobile app work together to create intelligent home climate control solution. To compete with established players in the heat pump market, the company has focused on software and design. One example is the over-the-air update it has implemented for existing heat pumps - the new firmware improved unit performance by over 20%. Ductless systems ensure a consistent temperature in every room. Quilt is even more efficient thanks to the Auto-Away feature, which uses smart sensors to save energy when rooms are unoccupied. Installation is simple and quick, like other ductless systems and most modern systems are currently in production. The company is building a network of certified installation partners.
Quilt produces ductless, dual-zone home heat pumps controlled by artificial intelligence. Quilt's indoor and outdoor units, Dial and mobile app work together to create intelligent home climate control solution. To compete with established players in the heat pump market, the company has focused on software and design. One example is the over-the-air update it has implemented for existing heat pumps - the new firmware improved unit performance by over 20%. Ductless systems ensure a consistent temperature in every room. Quilt is even more efficient thanks to the Auto-Away feature, which uses smart sensors to save energy when rooms are unoccupied. Installation is simple and quick, like other ductless systems and most modern systems are currently in production. The company is building a network of certified installation partners.
6
Funding: $38.1M
Blue Frontier specializes in air conditioning systems designed for sustainability, comfort and energy storage. It's technology is based on liquid desiccants, which dehumidifies air.
Blue Frontier specializes in air conditioning systems designed for sustainability, comfort and energy storage. It's technology is based on liquid desiccants, which dehumidifies air.
8
Funding: $20.5M
Bedrock Energy develops drilling technology and advanced subsurface simulation software to enable geothermal heating and cooling.
Bedrock Energy develops drilling technology and advanced subsurface simulation software to enable geothermal heating and cooling.
9
Funding: $18.4M
Helix Earth has created an auxiliary HVAC pre-treatment system that connects to existing rooftop air conditioners, VRF systems, commercial split systems and removes moisture and filters outside air before it enters the air conditioning system. This allows the equipment to operate at a lower load, consume less energy, and last longer without the need for replacement. The company's approach is based on an innovative NASA technology that separates temperature control and humidity management, allowing each to be optimized independently. The system is primarily used in quick-service restaurants (QSRs), cafes, retail stores, schools, nursing homes, hotels, small offices, theaters, and healthcare facilities.
Helix Earth has created an auxiliary HVAC pre-treatment system that connects to existing rooftop air conditioners, VRF systems, commercial split systems and removes moisture and filters outside air before it enters the air conditioning system. This allows the equipment to operate at a lower load, consume less energy, and last longer without the need for replacement. The company's approach is based on an innovative NASA technology that separates temperature control and humidity management, allowing each to be optimized independently. The system is primarily used in quick-service restaurants (QSRs), cafes, retail stores, schools, nursing homes, hotels, small offices, theaters, and healthcare facilities.
10
Funding: $12.7M
Flair makes smart vents and wireless thermostats and advanced software for residential heating and cooling.
Flair makes smart vents and wireless thermostats and advanced software for residential heating and cooling.
11
Funding: $12.8M
Harvest Thermal develops a control system for home use that integrates heating, hot water, and cooling with thermal storage.
Harvest Thermal develops a control system for home use that integrates heating, hot water, and cooling with thermal storage.
12
Funding: $9.5M
Skycool Systems is improving the efficiency of all cooling systems by harnessing an untapped renewable resource. It's panels turn the sky into a renewable resource and reduce the electricity use of air conditioning and refrigeration systems
Skycool Systems is improving the efficiency of all cooling systems by harnessing an untapped renewable resource. It's panels turn the sky into a renewable resource and reduce the electricity use of air conditioning and refrigeration systems
13
Funding: $1M
Breezi builds wireless devices that enable homeowners to detect problems with their HVAC systems before they become severe.
Breezi builds wireless devices that enable homeowners to detect problems with their HVAC systems before they become severe.
14
Hydronic Shell Technologies provides HVAC and facade system to construction industry that enable energy retrofits.
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