Energy, Heating & Cooling Costs UK
UK costs for central heating, radiators, boilers, power flushing, heat pumps, air conditioning, solar panels, underfloor heating and home insulation.
Data review: 1 September 2026 · 12 guides · 12 calculators
Energy & Insulation calculators
12 calculators use the same sourced guide data with transparent project and regional modelling assumptions.
Boiler Replacement
Model boiler type, moving costs, controls and common extras.
Open calculator →Live calculatorBoiler Service
Estimate a one-off gas, oil or electric boiler service with regional modelling.
Open calculator →Live calculatorCentral Heating Installation
Estimate gas, oil or electric central-heating installation by property size and region.
Open calculator →Live calculatorRadiator Replacement
Estimate standard panel, vertical, column and towel-radiator replacement by quantity and postcode.
Open calculator →Live calculatorPower Flushing
Estimate central-heating power flushing by radiator count, system condition and region.
Open calculator →Live calculatorHeat Pump
Estimate air-source or ground-source costs and model the current BUS grant.
Open calculator →Live calculatorAir Conditioning Installation
Estimate wall-mounted or ducted home air-conditioning equipment and installation.
Open calculator →Live calculatorUnderfloor Heating
Compare electric and wet underfloor heating by area, project type and postcode.
Open calculator →Live calculatorSolar Panels
Estimate 3–6 kW solar PV, battery storage and access costs.
Open calculator →Live calculatorHome Insulation
Estimate loft quilt and cavity-wall insulation with postcode-aware pricing.
Open calculator →Live calculatorCavity Wall Insulation
Estimate cavity wall insulation by property type, wall condition and postcode.
Open calculator →Live calculatorExternal Wall Insulation
Estimate external wall insulation by wall area, condition, finish and postcode.
Open calculator →Energy & Insulation guides
Central heating installation
UK full central heating installation costs for gas, oil and electric systems, including common pipework and radiator allowances.
Around £5,250 for a gas central heating installationView guide →Cost guideRadiator replacement
UK radiator replacement costs for standard panels, vertical and column radiators, towel radiators, relocation and common pipework extras.
Around £200–£300 for many standard replacementsView guide →Cost guidePower flushing
UK central-heating power flushing costs by property size and radiator count, with typical engineer time allowances.
Around £550 for a 3-bedroom house with 10 radiatorsView guide →Cost guideNew boiler
Current UK boiler replacement costs separating supply-only appliance prices, installation labour, like-for-like combi replacements and common extras.
£2,500–£4,000 for a like-for-like combi replacementView guide →Cost guideBoiler service
Current UK boiler service costs for gas, oil and electric boilers, plus common boiler-cover benchmarks.
Around £100 for a gas boiler serviceView guide →Cost guideHeat pump
Current UK heat-pump costs for air-to-air, air-to-water and ground-source systems, with 2026 Boiler Upgrade Scheme grant values shown separately.
About £15,000 for air-to-water before grantView guide →Cost guideAir conditioning installation
UK home air-conditioning installation costs for wall-mounted split systems, ducted units and common electrical extras.
Around £1,900 for a 12,000 BTU wall unit installedView guide →Cost guideSolar panels
Current UK solar PV costs by 3–6 kW system size, with matching battery-storage benchmarks and common installation extras.
About £8,000 for a standard 4 kW systemView guide →Cost guideUnderfloor heating
UK underfloor heating installation costs for electric and wet systems in new builds and renovations.
£50–£110 per m²View guide →Cost guideHome insulation
Current UK loft and cavity-wall insulation costs by property type, with per-square-metre material benchmarks and suitability notes.
£654–£1,206 for loft quilt · £950–£4,600 for cavity wallsView guide →Cost guideCavity wall insulation
Typical UK cavity wall insulation costs by property type and wall area.
£950–£4,600 by property typeView guide →Cost guideExternal wall insulation
UK external wall insulation costs per square metre and by property type.
£150–£200 per m² installedView guide →