Boiler vs Heat Pump Cost UK 2026: Which Is Cheaper?
Upfront and running costs differ between gas boilers and air source heat pumps. This 2026 UK guide compares typical cost drivers and grant context—always get tailored quotes.
Installation Costs
Heat pump installs can cost more than simple boiler swaps, especially if emitters and insulation need upgrading.
Running Costs
Heat pumps can be efficient at low temperatures; gas boilers benefit from lower gas unit costs on many tariffs. Model both with current prices.
Grants
UK incentives change—check official 2026 guidance for heat pump support and eligibility.
Overall Value
Insulation and emitter suitability often decide value more than headline equipment prices.
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Use the Boiler Size CalculatorFrequently Asked Questions
Which is cheaper to install?
Often a boiler swap versus a full heat pump retrofit—but quotes vary.
Which is cheaper to run?
Depends on tariffs, insulation, and seasonal efficiency.
Do I need bigger radiators for a heat pump?
Often lower flow temperatures mean upgraded emitters help.
What about grants?
Check current government information for 2026 schemes.
Should I insulate first?
Usually yes—helps both boilers and heat pumps.