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NovaAir Heat Pump

An air-water heat pump that significantly cuts lifetime emissions in the building sector

March 2022
Gallery NovaAir Heat Pump 1
Gallery NovaAir Heat Pump 1


NovaAir provides a sustainable, energy-efficient and easily integrable heating system for private households as well as commercial buildings, that is economically superior over the course of its lifetime. By allowing the NovaAir to run on the natural refrigerant propane instead of widespread synthetic refrigerants, its emissions are up to 700 times lower than those of refrigerants in conventional heat pumps. When compared to a Single Family Home running on gas or oil heating, 3500-4500 kg CO2-equivalents can be saved annually. Meanwhile, annual operating costs are halved, which drastically lowers costs during the estimated 30 year lifetime. The gain in energy efficiency stems from an intricate design made in Switzerland in combination with a digital platform, that allows for continuous optimization and seamless integration with solar panels and features of the “Smart Home”. The transmission of relevant data on machine health allows for faster and cheaper maintenance of the heat pump.

Label Date March 17, 2022
From Switzerland
Maturity stage Small scale commercialization
Looking For Network, New clients, Visibility, Funding, Partners, Credibility

Implementation Stories

NovaAir Heat Pump by Regli Energy Systems AG
Implemented by Federal Office for Buildings and Logistics in Basel (Switzerland) in 2021

The Federal Office for Buildings and Logistics installed 3 NovaAire large heat pumps to heat their building and water in July 2021 in Basel. The implementation’s aim was to ensure a future proof technology is used within their premises, thus lowering electricity costs and reducing CO2 footprint. 10 weeks passed between the order and the installation of the 3 heat pumps by Regli Energy Systems.


Saving approximately 8.5 tons of co2 per year compared to conventional large scale heat pump


The environmental benefits

  • The NovaAir is ranked 3rd and 6th in "energy efficiency" ratings out of 64 listed air-to-water heat pumps (supply water temperature of 35° and 55° centigrade)
  • With a noise-profile of 28dB(A) at 3m the design of the NovaAir remains quiet when put up in a garden, in addition to its aesthetic attributes
  • Low filling with the natural refrigerant R290 allows the NovaAir heat pump to save about 625 kg of CO2 equivalents per year compared to conventional heat pumps running on the popular refrigerant R401a
  • Compared to gas and oil heating systems about 3500 - 4500 kg of CO2 can be saved in operation per year
  • Thanks to its high seasonal coefficient of performance (SCOP) of 4.98 at 35° C supply water (national average 2020: 4.13), electricity savings of 20% relative to competitors are possible

The Financial benefits

  • The NovaAir has excellent synergies with solar panels and can utilize spare energy that would otherwise be fed back into the power grid at zero return
  • The NovaAir can operate at half to a third (when integrated with solar panels) the annual costs of an oil heating system (over its 20 year lifetime savings can amount to 32’000 CHF)
  • At low energy & maintenance costs, the NovaAir is more economic than gas heating systems by the 5th year, after 7 years oil heating systems are left behind.

Activity Region

  • /


Germany, Switzerland,

  • Headquarters
  • Activity

Company Profile

Regli Energy Systems AG

We develop and commercialize sustainable heat pumps, that are up to 2000 times less hazardous than other heat pumps.

View company profile Solution website
Headquarters 8152 Glattpark (Opfikon), Switzerland
Contact the Solution Provider Add to Favorites

The information set out above, is solely for the purposes of information and the Solar Impulse Foundation does not provide any guarantee as to its authenticity, completeness or accuracy. This information does not constitute investment advice or a recommendation to buy into, transact or to enter into any agreement with any of the parties or persons mentioned above. Potential investors or interested parties are solely responsible for their investment or business decisions and for performing any due diligence required by the circumstances. The innovator Regli Energy Systems AG has asserted ownership of the intellectual property rights for images, videos, and content showcased above, affirming full and unrestricted usage rights, and has provided explicit permission for the Solar Impulse Foundation to publish such information designated as "public" in the application form.