Are Heat Pumps Worth It in the UK?
It depends on what you're replacing. If you're coming off oil or LPG, a heat pump will almost certainly save you money. If you have a working gas boiler, the running cost savings are smaller — but the £7,500 grant, longer lifespan, and protection against gas price rises still make it a strong long-term move for most homes.
At a glance
- Replacing oil/LPG
- Almost always worth it
- Replacing gas boiler
- Worth it long-term
- Typical annual savings vs gas
- £100–£300
- Typical annual savings vs oil
- £500–£1,200
- Heat pump lifespan
- 20–25 years
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When heat pumps are clearly worth it
The strongest case is if you're on oil or LPG — you'll save £500–£1,200 a year on fuel alone. It's also a good time if you're already renovating, since the installation is cheaper and less disruptive when walls are open and plumbers are on site. Well-insulated homes benefit most because the heat pump doesn't have to work as hard, keeping electricity costs down.
When it's more marginal
If your gas boiler is relatively new and your home is well insulated, annual savings may only be £100–£300. At that level, the payback on the upfront cost is slower. But there's a longer game: heat pumps last 20–25 years (vs 12–15 for a boiler), gas prices are volatile, and the government plans to phase out new gas boiler installations by 2035. The question isn't just "will I save this year?" — it's "what happens over the next 15–20 years?"
The comfort factor
This catches people off guard. Heat pumps don't blast hot air like a boiler — they keep your home at a steady, even temperature throughout the day. Most people who've lived with one say they prefer it. The house doesn't go through hot-cold cycles, and rooms that were always a bit chilly often even out.
The environmental case
A heat pump typically reduces your home's carbon emissions by 50–70% compared to a gas boiler, and this improves every year as the electricity grid gets cleaner. If reducing your environmental impact matters to you, a heat pump is one of the single biggest changes you can make.
Frequently asked questions
How much money will I save with a heat pump compared to a gas boiler?
Do heat pumps work well in cold UK winters?
How long does a heat pump last compared to a gas boiler?
Will a heat pump add value to my home?
How we calculate estimates
Our estimates use published data from the Energy Saving Trust, Ofgem tariff caps, and MCS installer pricing. We model savings based on your home size, insulation level, and current heating system. All figures are indicative — your actual costs will depend on your installer's survey and quote.
Check if a heat pump is worth it for your home
Get a personalised savings estimate based on your property and current heating.