Heating, Hot water & More Ltd


Air Source Heat Pumps

The outside air contains an inexhaustible amount of heat. Even in temperatures as low as -20°C there is still heat available for an air source heat pump to absorb.


An air source heat pump is designed to meet all the demands of heat and hot water for your property all year round. This means there is no need for any other kind of supplementary heat source.

Air-source heat pumps can be fitted as part of a heating system consisting of radiators. However, we recommend radiators are upsized by between 20-30%. Or better still, Air source heat pumps are best combined with underfloor heating as they use water at low temperatures which will optimise the heating system’s coefficient performance rating.(CoP)

Your electricity bill will increase slightly. However, your energy bills overall will go down as although heat pumps use electricity they are extremely efficient and are achieving CoP ratings of up to 1:4.

That means a single unit of electricity is generating four units of heat. In better terms, £1 worth of electricity, is  providing £4 worth of heat.

When heat pumps are compared with boilers their energy achievements look even more impressive. A-Rated boilers are 90% plus efficient while heat pumps are achieving up to 400%, efficiency.

Buffer Tanks

These tanks are used with units such as air source heat pumps. They are a store for the heating system water; they are positioned between the heat source for example (Air source heat pump), and the rest of the heating system. They allow the heat pump to charge the tank with heat energy, which can be extracted by the heating and hot water systems.

Buffer tanks are required for low temperature heating systems such as air source heat pumps. Without the buffer tank, the heat pump would come on when a heating requirement is sensed by a thermostat, but then turn off very quickly when that heating requirement has been met. This is called cycling and is very inefficient and reduces the life of the heat pump compressor.