Solar Panels vs Heat Pumps: Which Should You Install First?
Short answer
Solar panels offer a faster payback period; heat pumps deliver bigger carbon savings. For most homes install solar first.
Which suits you
Solar Panels: Homes with south-facing roofs
Heat Pumps: Homes with high heating bills
Side by side
| Criteria | Solar Panels | Heat Pumps |
|---|---|---|
| Upfront cost | £3,160–£12,780 | £6,181–£21,010 |
| Could save (est.) | up to £555/yr | up to £272/yr |
| Efficiency | 20-25 years lifespan | 25 year lifespan |
| Government grant | 0% VAT | up to £7,500 |
| Carbon impact | Low carbon | Higher carbon |
| Installation time | 1–3 days | 1–2 days |
| Best for | Homes with south-facing roofs | Homes with high heating bills |
Which should you choose?
Solar panels offer a faster payback period; heat pumps deliver bigger carbon savings. For most homes install solar first.
If you’re primarily concerned with upfront cost, Heat Pumps (typically £7000–£15000) is generally the lower-cost option. If you want potentially lower running costs and a smaller carbon footprint long-term, Solar Panels may offer better long-term value.
Solar Panels: pros and cons
Where it wins
- 20-25 years lifespan efficiency
- Could save up to £555 a year
- Lower carbon footprint
Where it struggles
- Higher upfront cost (£4500–£8000)
- Best suited to Homes with south-facing roofs
- May need a property assessment first
Heat Pumps: pros and cons
Where it wins
- Lower upfront cost (£7000–£15000)
- Could save up to £272 a year
- Best suited to Homes with high heating bills
Where it struggles
- 25 year lifespan only
- Higher carbon emissions
- Less future-proof
Questions about solar panels and heat pumps
Which is cheaper — solar panels or heat pumps?
Which saves more money — solar panels or heat pumps?
Which is more efficient — solar panels or heat pumps?
Can I install both solar panels and heat pumps?
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.