Enter your postcode and we'll look up your EPC, calculate your home's heat loss, and show you exactly what a heat pump would cost — with the £7,500 government grant already applied.
How it works
No sign-up. No phone number. Just your postcode and a few details about your home.
We look up your EPC certificate automatically and pre-fill your property details.
Property type, build era, insulation and glazing. Takes about 60 seconds.
Heat loss, pump size, net cost after £7,500 grant, and running cost on each tariff.
Go direct to MCS-certified installers. We pass your heat loss data to save them time.
Enter your postcode and we look up your Energy Performance Certificate from the government register — no manual entry needed.
The Boiler Upgrade Scheme grant is automatically deducted from your estimate. Oil and LPG homes get £9,000 from July 2026.
Compare Cosy Octopus, E.ON Next Pumped, British Gas Heat Power, ScottishPower and EDF side by side for your home's heat loss.
We don't ask for your name, email or phone number at any point. Your results are yours, with no account or sign-up required.
Based on MIS 3005-D normalised W/m² methodology, calibrated against real MCS and Spruce room-by-room surveys.
Get an estimate and share it by email with a single click — pre-written, with all the key figures included.
Why use this tool?
Every other heat pump calculator is owned by an installer or manufacturer. We're not — and we don't require your contact details before showing you anything.
| Feature | heatpumpguide.uk | Installer tools | Price comparison sites |
|---|---|---|---|
| No email or phone required | ✓ Never asked | ✗ Required to see results | ✗ Required |
| EPC auto-populated | ✓ Automatic | ✓ Some tools | ✗ Manual input |
| Multiple installer comparison | ✓ 4 installers | ✗ One installer only | ✓ But sells your data |
| Tariff comparison (5 tariffs) | ✓ Included | ✗ Not included | ✗ Not included |
| BUS grant auto-applied | ✓ inc. £9k oil uplift | ✓ Some tools | ✗ Not always |
| Hardware independent | ✓ No brand preference | ✗ Own brand only | Varies |
Guides
The honest answer for UK homeowners facing an unplanned breakdown. Real costs, the £7,500 grant, timescales, and when it makes sense to just replace the boiler instead.
Read the guide →No name, email, or phone number — ever. Just your postcode and 3 minutes.
Start my free estimate →