Replacing your heating is a big decision, and the choice between an air source heat pump and a new gas boiler is rarely as simple as the headlines suggest. Here is a straight, jargon free comparison based on what we actually see in homes around Hamilton and South Lanarkshire, so you can decide what genuinely fits your property and budget.
A like for like gas boiler swap in a typical Hamilton semi usually lands somewhere between £2,000 and £3,500 fitted, depending on the make, where the boiler sits and whether the flue and gas supply need altering.
An air source heat pump is a bigger job. Expect £8,000 to £14,000 before any grant, because it involves an outdoor unit, often a hot water cylinder, and sometimes larger radiators. The UK Government's Boiler Upgrade Scheme currently offers £7,500 off an air source heat pump in Scotland, and Home Energy Scotland also runs grants and interest free loans worth looking into before you commit.
Gas is cheaper per unit than electricity, but a heat pump is far more efficient, typically producing around 3 to 4 units of heat per unit of electricity. In a well insulated home the running costs can come out similar or lower than gas; in a draughty, poorly insulated property a heat pump can cost more to run than people expect.
This is why insulation matters so much. Many older sandstone and solid wall homes in the area need loft and wall improvements first, otherwise you are paying to heat a house that loses warmth quickly whichever system you choose.
Gas boilers heat water hot and fast, so you get quick blasts of warmth and instant hot water from a combi. Heat pumps run at lower flow temperatures over longer periods, keeping the home at a constant, even warmth rather than rapid bursts.
Neither is better, but they suit different habits. If you like to flick the heating on for an hour then off, a heat pump needs a slight change in thinking. Many people find the steady background heat more comfortable once they adjust.
A good gas boiler lasts around 10 to 15 years with an annual service, while a well maintained heat pump can run 15 to 20 years. Gas remains widely available, but the long term direction of UK policy favours low carbon heating, which is worth factoring in if you plan to stay put.
If your current boiler is still reliable, there is no shame in fitting a new efficient gas boiler now and considering a heat pump later when you next upgrade or improve insulation. An honest survey of your specific home is the only way to know for certain, and we are happy to talk it through without pressure.
Yes. Many homes switch from gas to an air source heat pump, though it usually means adding an outdoor unit and sometimes upgrading radiators or fitting a hot water cylinder, so a home survey is essential first.
Yes, modern air source heat pumps are designed to extract heat from the air even in sub zero temperatures and are used widely across colder parts of Europe. Performance and efficiency dip on the coldest days, which good design and proper sizing account for.
If your boiler is reliable and under about ten years old, it often makes sense to keep it and plan ahead. The strongest case for switching is when your boiler is near the end of its life or your home is well insulated enough to suit a heat pump.
Got a job in mind? Give us a call or send a message and we will get straight back to you, usually the same day.