Heat Pump vs Gas Boiler: Which Is Better for Your Home?
Short answer
A heat pump wins on running costs and carbon if your home is well-insulated; a gas boiler wins on upfront cost and compatibility with older homes.
Which suits you
Heat Pump: Well-insulated homes new builds
Gas Boiler: Older homes on tight budgets
Side by side
| Criteria | Heat Pump | Gas Boiler |
|---|---|---|
| Upfront cost | £6,181–£21,010 | £1,350–£6,134 |
| Could save (est.) | up to £272/yr | up to £202/yr |
| Efficiency | 300%+ COP | 89% efficiency |
| Government grant | up to £7,500 | none |
| Carbon impact | Low carbon | Higher carbon |
| Installation time | 1–3 days | 1–2 days |
| Best for | Well-insulated homes new builds | Older homes on tight budgets |
Which should you choose?
A heat pump wins on running costs and carbon if your home is well-insulated; a gas boiler wins on upfront cost and compatibility with older homes.
If you’re primarily concerned with upfront cost, Gas Boiler (typically £1500–£3500) is generally the lower-cost option. If you want potentially lower running costs and a smaller carbon footprint long-term, Heat Pump may offer better long-term value.
Heat Pump: pros and cons
Where it wins
- 300%+ COP efficiency
- Could save up to £272 a year
- Lower carbon footprint
Where it struggles
- Higher upfront cost (£7000–£15000)
- Best suited to Well-insulated homes new builds
- May need a property assessment first
Gas Boiler: pros and cons
Where it wins
- Lower upfront cost (£1500–£3500)
- Could save up to £202 a year
- Best suited to Older homes on tight budgets
Where it struggles
- 89% efficiency only
- Higher carbon emissions
- Less future-proof
Questions about heat pump and gas boiler
Which is cheaper — heat pump or gas boiler?
Which saves more money — heat pump or gas boiler?
Which is more efficient — heat pump or gas boiler?
Can I install both heat pump and gas boiler?
Do both qualify for government grants?
Get quotes for either, or both
Tell us about your home and installers who cover your postcode may contact you.