What Is the Life Expectancy of a Heat Pump?

How Long Do Heat Pumps Last?

Air source heat pumps typically last 20-25 years with proper maintenance, while ground source heat pumps can last 20-25 years (the ground loops can last 50+ years). This is significantly longer than a gas boiler, which typically lasts 12-15 years.

Over a 25-year period, you would need to replace a gas boiler at least once, costing £2,000-£4,000 each time. A heat pump purchased today should last the entire period, making it the more economical choice over the long term.

For ground source systems, see our guide to ground source heat pump life expectancy.

What Affects Lifespan?

Several factors influence how long your heat pump lasts: quality of installation, regular maintenance, system sizing (correctly sized systems last longer), and operating conditions. Premium brands like Samsung, Daikin, and Vaillant are known for their reliability and longevity.

Proper installation by an MCS-certified installer is the single most important factor. A well-installed system with annual servicing can comfortably exceed 25 years of reliable operation.

Maintenance Requirements

Heat pumps require very little maintenance compared to gas boilers. An annual service by a qualified engineer is recommended, costing around £100-£150. This typically involves checking refrigerant levels, cleaning filters, inspecting electrical connections, and ensuring the system is operating efficiently.

Unlike gas boilers, heat pumps don't burn fuel, so there's no risk of carbon monoxide leaks, no need for annual gas safety certificates, and significantly fewer components that can fail. This lower maintenance burden is another advantage of heat pump ownership.