Residential CO2 Heat Pump


CO2 Residential Pump


One of today's examples is an Energy-efficient and renewable residential CO2 heat pump

About the technology
An air to water heat pump is a very efficient device that uses heat in the ambient air for hot water production. Its heat energy output is about three to five times as high as the electricity input. The way it works is opposite to that of an air conditioning system: it uses a refrigerant cycle with a compressor and heat exchangers to extract heat from the ambient air and transfers this heat to water.

DENSO’s air to water heat pump uses the natural refrigerant CO2, which has a Global Warming Potential (GWP) of only 1. Typically heat pumps use a synthetic refrigerant gas such as R410A, which has a GWP of 2088. This number indicates that, when emitted into the air, its impact is 2088 times higher than CO2.

A CO2 Air to water heat pump is a good fit for:

  • High temperature domestic hot water production
  • High temperature radiator heating in existing, moderately insulated homes.

Note: This application requires excellent control of heating system water flow and temperatures. Customer satisfaction is our top priority, so in order to guarantee optimal installation quality, our DENSO CO2 heat pump is only available to selected partners*.

*More news expected in the summer of 2022.

About the product

Co2 Heat Pump


DENSO first introduced CO2 refrigerant to its Air to Water Heat Pumps in 2001, in Japan. Known as ‘Eco-Cute’, the product‘s improved energy efficiency meant that less domestic electricity was required. As a result the innovation won six globally recognised energy and environment awards, including the 2002 EPA Environmental Climate Protection Award from the U.S. Environmental Protection Agency.

DENSO’s CO2 Air to Water Heat Pump was first introduced into Europe in 2009 and set a standard for compact size, light weight and low noise. It is supplied as original equipment to heat pump manufacturers. DENSO CO2 Heat Pumps are now starting to be used in homes across Europe, supplying efficient, eco-friendly heating and hot water.