Are Heat Pumps Worth It in the UK? (2026)

We're not installers. We don't make money from selling heat pumps. So we can give you the straight answer: heat pumps are an excellent choice for many homes, but they're not right for everyone. The key factors are your current heating system, your home's insulation, the upfront cost you can manage, and whether you value lower carbon emissions.

The £7,500 BUS grant does most of the work. After it, the median air source installation costs about £5,400 (DESNZ, 2026 Q2) — roughly £2,400 more than a typical new gas boiler. On today's capped prices that gap takes about 12–14 years to recover for a gas-heated home. For oil and LPG homes the numbers are much better (see below).

But “worth it” isn't just about money. Heat pumps future-proof your home against rising gas prices and tightening regulations. The UK government has confirmed that gas boilers will be phased out of new builds and that existing boilers will eventually need replacing with low-carbon alternatives. Installing a heat pump now means you're ahead of the curve, rather than facing a rushed replacement later.

Payback period is the time it takes for your running cost savings to cover the net installation cost (after the BUS grant). Here's what it looks like for different scenarios.

Replacing a gas boiler: about 12–14 years

Compare the heat pump with the new gas boiler you would otherwise buy. The median heat pump costs about £5,400 after the grant, about £2,400 more than a £3,000 boiler. At current capped prices it saves about £60–£100 a year on fuel, plus about £108 if you cap off the gas supply and stop paying the standing charge. That recovers the difference in about 12–14 years. A cheaper installation, a heat pump tariff or a higher real-world COP shortens this; a poor installation lengthens it.

Replacing an oil boiler: about 5–8 years

Heating oil roughly doubled in price over the past year and is not price-capped. At October 2026 prices a heat pump saves about £470–£830 a year on fuel. Off-gas-grid oil homes can get £9,000, so the median installation costs about £3,900 after the grant — similar to a new oil boiler. If your oil boiler needs replacing anyway, you save from year one; if it still works, the heat pump pays for itself in about 5–8 years. This is the strongest economic case for a heat pump in the UK. Oil prices move a lot, so redo the sum with your own last delivery price.

Replacing LPG

LPG is not price-capped and no reliable national average price is published, so work from your own delivery price. LPG homes without mains gas qualify for the same £9,000 grant as oil homes. If you're on LPG and your boiler is nearing the end of its life, a heat pump is almost always the better investment. You'll also reclaim the space used by the LPG tank.

Replacing electric storage heaters

Electric storage heaters use electricity at 100% efficiency. A heat pump uses electricity at 300%+ efficiency (COP 3+), so the electricity used for heating can fall by up to two-thirds. How much that saves depends on your off-peak tariff: storage heaters usually run on cheaper night-rate electricity, so compare using your own Economy 7 rates.

A heat pump is very likely worth it if:

• You're replacing oil, LPG, or electric storage heating. The running cost savings are substantial and payback is fast.
• Your home has reasonable insulation. Double glazing, loft insulation, and cavity wall insulation (if applicable) make a heat pump work at its best.
• Your gas boiler is over 10 years old. Rather than replacing it with another gas boiler (which will be increasingly obsolete), switching to a heat pump future-proofs your home while the £7,500 grant is still available.
• You care about reducing your carbon footprint. A heat pump produces roughly a quarter of the CO2 of a gas boiler, and this improves each year as the electricity grid gets greener.
• You're planning to stay in your home long-term. The longer you live there, the more savings you accumulate after the payback period.
• You have (or plan to have) solar panels. Solar panels generate free electricity that can power your heat pump, dramatically reducing running costs.

We believe in honest advice. A heat pump may not be the best choice if:

• Your gas boiler is relatively new (under 5 years old). If it's working well and efficient, there's no urgency. But consider switching when it next needs replacing — and keep an eye on the BUS grant, as it won't last forever.
• Your insulation is very poor and you can't afford to improve it. A heat pump in a poorly insulated home will work harder, cost more to run, and may not deliver the savings you expect. Address insulation first.
• You have no suitable outdoor space. Air source heat pumps need an outdoor unit. If you're in an upper-floor flat with no garden or balcony, it may not be practical.
• You're planning to move soon. If you're selling within 2–3 years, you may not recoup the installation cost — though a heat pump can add value to your property and improve its EPC rating.
• The installation requires very extensive work. If your home needs a full radiator replacement, significant insulation upgrades, and electrical work on top of the heat pump installation, the total cost may stretch the payback too far for your budget.

Even in these cases, it's worth getting a free survey and quote. An MCS-certified installer can assess your specific situation and give you exact figures. You might be surprised.

Even if the financial savings are modest for your situation, the environmental benefits are significant. A heat pump in a typical UK home produces around 1 tonne of CO2 per year, compared to 2.7 tonnes for a gas boiler and 4.5 tonnes for an oil boiler.

As the UK electricity grid continues to decarbonise (it's already over 50% renewable), heat pump emissions fall further each year — without you doing anything. By 2035, when the grid is targeted to be fully decarbonised, a heat pump will produce close to zero carbon emissions. A gas boiler will always produce CO2, no matter how green the grid becomes.