Air source heat pumps
Outside air contains a reliable level of heat that can be captured by our one piece air source heat pump.
The Baxi Ambiflo™ is suitable for domestic use and takes the latent heat from outside air, using this energy to provide heating within the home. Air source heat pumps can offer substantial carbon savings when compared to other heating sources such as electric storage heaters and oil boilers.
Under typical conditions, air source heat pumps operate at average seasonal efficiencies of between 200% and 300%. The efficiency of heat pumps varies depending on the difference between the outside air temperature and central heating temperature. The smaller the difference, the greater the efficiency.
How it works
- Outside air is drawn over the evaporator. The refrigerant absorbs heat from the air and changes from a liquid to a vapour
- The refrigerant then passes through a compressor, increasing the pressure and consequently the temperature of the vapour. This higher temperature is now suitable for domestic heating
- The higher temperature refrigerant then passes through the condenser heat exchanger, transferring heat to the heating system
- With the heat now removed, the refrigerant returns to liquid. The liquid refrigerant then passes through the expansion valve, returning the refrigerant to its original state ready to repeat the cycle
Efficiency is commonly termed as coefficient of performance (COP). This means that for every kW of (electrical) energy input, they provide between 2kW and 4kW of (heat) energy output. The efficiency of heat pumps varies depending on the difference between the outside air temperature and the central heating water temperature. The smaller the difference, the greater the efficiency. For this reason, air source heat pumps are ideally suited to lower temperature central heating systems - so the design of the heating circuit is important.
Baxi Ambiflo™ air source heat pumps are highly efficient and offer one of the quietest in class. They are ideal for adequately insulated properties with underfloor heating or low temperature radiator systems, which have an outdoor area for siting the heat pump. They are ideally suited for new developments and refurbishments especially in areas with no mains gas supply.
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