How does an air source heat pump work

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An Air source heat pump (ASHP) is a system that transfers heat from the outdoor air to indoors, using refrigeration. It’s an energy-efficient alternative to traditional heating methods such as boilers, and it also functions as an air conditioner in warmer months. A good Air Source Heat Pumps Worcester company such as can help you to assess whether this is the right solution for you.

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The system absorbs heat from the outdoor air into a liquid refrigerant. This is achieved by an outdoor unit that contains a heat exchanger and a fan. The heat exchanger absorbs heat, and the fan blows the air over it.

The refrigerant then evaporates and turns into a gas at a low temperature and in a low-pressure liquid state, thanks to the absorbed heat. The refrigerant is compressed, which increases its temperature significantly. The hot gas then flows through another heat exchanger inside the building, releasing its heat. As the refrigerant loses heat, it condenses into a liquid, warming the air or water in the building’s heating system. This is much more energy efficient than traditional boiler systems.

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The liquid refrigerant is then lowered in pressure and cools down as it passes through an expansion valve. It’s now ready to absorb heat from the outdoor air again, and the cycle repeats. For cooling purposes in warmer months, the process can be reversed.

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