High vs medium vs low temperature air source heat pumps: What's the difference and how to choose between them
Briefly

Low temperature air source heat pumps, while able to produce enough heat for hot water, require larger cylinders and immersion heating once a week to prevent bacteria growth.
High temperature air source heat pumps operate at temperatures up to 80°C, but it’s crucial to use the controls correctly to avoid unnecessary energy consumption and overheating.
Different types of ASHPs use varying refrigerants and compressors, resulting in significant differences in their performance and suitability for heating needs in modern homes.
Building regulations now stipulate lower maximum temperatures for gas boilers, making the choice of the right heat pump type essential for compliance and efficiency.
Read at Homebuilding & Renovating
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