Heat Pump Cost Calculator UK
Calculate Your Heat Pump Installation Cost
Get an accurate estimate for your heat pump installation including government grants and potential savings.
Your Estimated Heat Pump Cost
What this means for you:
Government Grants Available
Boiler Upgrade Scheme (BUS):
- Air Source Heat Pumps: Up to £7,500 grant
- Ground Source Heat Pumps: Up to £6,000 grant
- Available for eligible homeowners in England and Wales
- No means testing required
- Must use MCS-certified installer
Heat Pump Types and Costs
| Heat Pump Type | Typical Cost Range | Installation Complexity | Efficiency (SCOP) | Best For |
|---|---|---|---|---|
| Air Source (Air-to-Water) | £8,000 – £15,000 | Low to Medium | 3.0 – 4.5 | Most UK homes |
| Ground Source | £15,000 – £35,000 | High | 3.5 – 5.0 | Larger properties with garden space |
| Air-to-Air | £3,000 – £8,000 | Low | 3.0 – 4.0 | Heating only (no hot water) |
| Hybrid Systems | £7,500 – £12,000 | Medium | Varies | Gradual transition from gas |
Installation Process and Timeline
What to Expect
The heat pump installation process typically follows these stages:
- Initial Assessment (1-2 hours): Survey of your property, heating requirements, and electrical supply
- Design Phase (1-2 weeks): System specification and planning permissions (if required)
- Installation (1-3 days): Heat pump unit installation, pipework, and system commissioning
- Handover (1 hour): System demonstration and warranty registration
Important: Most air source heat pumps qualify as permitted development, but ground source installations may require planning permission. Your installer will advise on local requirements.
Running Costs and Savings
Heat pump running costs depend on several factors:
| Current System | Typical Annual Cost | Heat Pump Annual Cost | Potential Annual Saving |
|---|---|---|---|
| Gas Boiler | £800 – £1,200 | £850 – £1,100 | £100 – £300 |
| Oil Boiler | £1,200 – £1,800 | £850 – £1,100 | £400 – £700 |
| Electric Heating | £1,500 – £2,500 | £850 – £1,100 | £650 – £1,400 |
| LPG Boiler | £1,100 – £1,600 | £850 – £1,100 | £250 – £500 |
Frequently Asked Questions
How long do heat pumps last?
Heat pumps typically last 15-20 years with proper maintenance, similar to traditional boilers. Regular servicing can extend their lifespan and maintain efficiency.
Do heat pumps work in cold weather?
Modern air source heat pumps work effectively down to -15°C. They’re designed for the UK climate and continue to extract heat from the air even on cold winter days.
Will I need to upgrade my radiators?
Not necessarily. Many existing radiators work with heat pumps, though some may need to be larger or you might benefit from underfloor heating for optimal efficiency.
How much space do I need for installation?
Air source heat pumps need about 1-2 metres clearance around the outdoor unit. Ground source systems require sufficient garden space for trenches or boreholes.
Are heat pumps noisy?
Modern heat pumps operate at around 40-50 decibels (similar to a quiet conversation). Installation location is important to minimise any potential noise impact.
What maintenance is required?
Annual servicing by a qualified engineer is recommended. Basic maintenance includes checking filters, clearing debris from the outdoor unit, and monitoring system performance.
Choosing the Right Heat Pump
Key Considerations
Property Assessment:
- Heat loss calculation to determine required capacity
- Insulation levels and potential improvements
- Available space for installation
- Existing heating distribution system
System Selection:
- Climate suitability and performance ratings
- Integration with existing hot water systems
- Smart controls and monitoring capabilities
- Warranty and after-sales support
Professional Assessment Required: A qualified MCS-certified installer should conduct a proper heat loss calculation and system design. This ensures optimal performance and eligibility for government grants.
References
- Department for Business, Energy & Industrial Strategy. (2025). Boiler Upgrade Scheme: Policy Overview and Statistics.
- Energy Saving Trust. (2025). Heat Pumps: Costs, Performance and Consumer Guidance.
- Heat Pump Association. (2024). UK Heat Pump Market Report and Installation Standards.
- Nesta. (2025). Heat Pump Cost Analysis and Consumer Research Findings.
- Office for Gas and Electricity Markets (Ofgem). (2025). Energy Price Cap and Heat Pump Tariff Analysis.
- UK Government. (2025). Heat and Buildings Strategy: Implementation and Grant Schemes.