Top 13 Energy-efficient cooling and air-conditioning startups in USA
Dec 09, 2025
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20
1
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.
2
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.
3
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
4
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
5
Funding: $132M
Ice Energy develops Ice Bear - thermal energy storage for air conditioning, that is lowering electric bills for businesses and homeowners, and reducing CO2 emissions.
Ice Energy develops Ice Bear - thermal energy storage for air conditioning, that is lowering electric bills for businesses and homeowners, and reducing CO2 emissions.
6
Funding: $97.5M
Sealed covers the upfront costs to install energy-saving upgrades like insulation, smart tech, and HVAC to make your house feel like new.
Sealed covers the upfront costs to install energy-saving upgrades like insulation, smart tech, and HVAC to make your house feel like new.
7
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.
8
Funding: $17.8M
Infinite Cooling's mission is to provide novel technology to enable water-sustainable thermoelectric power. Its technology reduces water consumption in evaporative cooling tower systems by over 20% by capturing water from cooling tower plumes
Infinite Cooling's mission is to provide novel technology to enable water-sustainable thermoelectric power. Its technology reduces water consumption in evaporative cooling tower systems by over 20% by capturing water from cooling tower plumes
9
Funding: $10.1M
Axiom Exergy transforms the world's cooling systems into intelligent, cloud-connected batteries.
Axiom Exergy transforms the world's cooling systems into intelligent, cloud-connected batteries.
10
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
11
Funding: $5M
Dig Energy produces purpose-built drilling technology to create highly efficient geothermal heating and cooling systems.
Dig Energy produces purpose-built drilling technology to create highly efficient geothermal heating and cooling systems.
12
Funding: $2.8M
NETenergy is a thermal energy storage company that is creating a thermal battery designed to offset peak electricity load.
NETenergy is a thermal energy storage company that is creating a thermal battery designed to offset peak electricity load.
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.
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