Decision Engines
What is the cheaper way to heat a UK home for the next ten years?
Same three-bedroom semi, same insulation, same winter. The boiler is cheaper to buy. The heat pump is cheaper to run and is the only option with grant support behind it.
Recommended path
Air source heat pump
Electric heating at roughly three times the efficiency of a gas boiler. Eligible for the £7,500 Boiler Upgrade Scheme in England and Wales.
- Installed
- £9.5k
- Annual run
- £950
- Grant
- £7,500
Wins on running cost and on grant support.
Plan thisReplacement gas boiler
Cheaper to install and well understood. No grant available. Tied to volatile gas prices and a 2035 phase-out for new installs.
- Installed
- £2.8k
- Annual run
- £1.4k
- Grant
- None
Wins on day-one cost. Loses every year after that.
Plan thisWhich planner fits the decision you're weighing?
- 01You've been quoted for a heat pump and want to sense-check the sizing.Heat pump sizing
- 02You want to know what air conditioning actually costs to run.Air conditioning cost
- 03You're wondering whether solar pays back on your roof.Solar ROI
- 04You have solar and want to know if a battery is worth adding.Should I add a battery?
- 05You've got condensation, damp or mould and don't know why.Ventilation assessment
- 06You just want the honest picture of your home, all at once.The Home Planner
Check your EPC by postcode, then understand what it actually means for your home.
Pull the official certificate from the government register, read it in plain English, and turn it into a Home Intelligence profile you can build on over time. Free, no sign-up, saved on your device.
Check my EPCThe Home Planner.
Tap an interactive UK home to test improvements and watch the costs, the comfort and the best next step respond as you go. The first planner on the site that lets you learn by touching the home itself.
Open the plannerHeat Pump Sizing & Cost
Find the right size air-source heat pump for your home, with installed cost, grant-adjusted price and running cost vs gas.
Open plannerAir Conditioning Cost
Single split, multi-split or whole-house; see realistic install and running costs for the rooms you actually want cooled.
Open plannerSolar ROI & Payback
Model a solar PV system against your real bill. Self-consumption, SEG export, payback period and 25-year savings.
Open plannerVentilation Assessment
PIV, MVHR or extract upgrades? Answer a few questions about your home and get a recommended path with rough costs.
Open plannerWant a single score across your whole home?
The Home Comfort Score combines heating, cooling, ventilation and efficiency into one number, then tells you what to do about it.