Estimate the cost of UK home energy and heating upgrades, including boiler installation, heat pumps, solar panels, solar batteries, insulation and EPC improvements. Use these calculators to compare project scopes, understand cost drivers and plan upgrades in a sensible order.
Each calculator focuses on a different part of a home energy upgrade. Start with the calculator that matches the project you are actually pricing, then compare related upgrades if the scope overlaps.
Estimate the cost of installing or replacing a boiler in a UK home, including common boiler types, installation complexity, specification and regional labour differences.
Use this calculator when the main project is replacing an existing gas boiler or installing a new boiler system. If you are comparing a boiler replacement with a low-carbon heating option, compare the estimate with the Heat Pump Cost Calculator.
Use the Boiler Installation Cost CalculatorEstimate the cost of installing an air source heat pump in a UK home, including system size, property type, radiator upgrades, hot water storage, access and specification.
Heat pump costs can change when radiators, hot water storage or insulation need upgrading, so the Insulation Cost Calculator may be useful before making a final comparison.
Use the Heat Pump Cost CalculatorEstimate the cost of installing a solar panel system on a UK home, including system size, roof layout, access, inverter setup and specification level.
Use this calculator when you are estimating the cost of solar PV. If you also want to store excess electricity, compare the estimate with the Solar Battery Cost Calculator.
Use the Solar Panel Cost CalculatorEstimate the cost of adding home battery storage, including battery capacity, inverter setup, installation complexity and electrical work.
Use this calculator when the project is adding battery storage. If you have not priced the solar system itself yet, start with the Solar Panel Cost Calculator first.
Use the Solar Battery Cost CalculatorEstimate the cost of improving home insulation, including loft insulation, cavity wall insulation, solid wall insulation and access conditions.
Insulation can affect the size, performance and value of heating upgrades, especially when comparing a heat pump or trying to improve an EPC rating.
Use the Insulation Cost CalculatorEstimate the cost of improving a UK home’s EPC rating through insulation, heating system upgrades, solar panels or a combination of measures.
Use this calculator when the goal is improving an EPC rating rather than pricing one isolated installation.
Use the EPC Improvement Cost CalculatorUse this table to choose the calculator that matches your project scope. Energy upgrades can overlap, but each estimate should start with the main job you are pricing.
| User situation | Best starting calculator | Why |
|---|---|---|
| Replacing an old gas boiler | Boiler Installation Cost Calculator | Boiler replacement is usually priced around boiler type, flue position, controls, labour and installation complexity. |
| Comparing gas heating with low-carbon heating | Heat Pump Cost Calculator | Heat pumps use a different cost model because radiators, hot water storage and insulation may affect the final scope. |
| Generating electricity at home | Solar Panel Cost Calculator | Solar PV cost depends on system size, roof layout, access, inverter setup and specification. |
| Storing excess solar electricity | Solar Battery Cost Calculator | Battery storage is priced separately because capacity, inverter type and electrical work change the cost. |
| Reducing heat loss | Insulation Cost Calculator | Insulation cost depends on the area being upgraded, access, material and installation method. |
| Improving a low EPC rating | EPC Improvement Cost Calculator | EPC upgrades often combine heating, insulation and energy generation measures. |
Energy upgrades rarely sit in isolation. A boiler replacement may be straightforward if the existing system is suitable, while a heat pump may depend on radiator sizing, hot water storage and insulation. Solar panels are priced around electricity generation, while solar batteries are priced around storage capacity. EPC improvement planning can involve several of these upgrades together.
Boilers and heat pumps both provide home heating, but they are priced differently. A boiler may be a simpler like-for-like replacement, while a heat pump can involve wider system checks.
Compare the Boiler Installation Cost Calculator with the Heat Pump Cost Calculator if you are deciding between heating systems.
Solar panels generate electricity. Solar batteries store electricity. The two upgrades can work together, but they have different pricing logic and should be estimated separately.
Start with the Solar Panel Cost Calculator, then use the Solar Battery Cost Calculator if storage is part of the project.
Insulation can reduce heat loss and change the value of a heating upgrade. EPC improvements may include insulation, heating changes, solar panels or several measures together.
Use the Insulation Cost Calculator before the EPC Improvement Cost Calculator if heat loss is the main issue.
Energy and heating costs are shaped by the property, existing system, installation scope, specification level, access and region. The right calculator should reflect the project type rather than applying one broad average to every upgrade.
A detached house, semi-detached house, terrace, bungalow or flat can have different heating loads, access conditions, roof space and installation complexity.
Costs change when an installer can reuse parts of the existing system compared with projects that need new pipework, controls, cylinders, electrical work or access changes.
A boiler, heat pump, solar panel system, battery, insulation project and EPC improvement plan each have different pricing logic. That is why each calculator in this cluster has its own cost model.
Higher-capacity systems, premium controls, larger batteries, higher-output panels and more complex insulation materials can increase the estimate.
Loft access, roof access, plant location, scaffold requirements, cylinder position, electrical access and parking can all affect labour time.
Labour rates, installer availability and project complexity can vary by region, so the calculators should include regional cost adjustment where relevant.
The best order depends on the property, but many projects are easier to plan when heat loss, heating system options, electricity generation, storage and whole-home EPC improvements are considered in sequence.
Insulation can affect heating demand and the suitability of some upgrades. If rooms are cold, drafty or expensive to heat, start with the Insulation Cost Calculator.
A boiler replacement and heat pump installation solve similar heating problems but have different installation requirements. Compare the Boiler Installation Cost Calculator with the Heat Pump Cost Calculator.
Solar panels are usually estimated around system size, roof layout and electrical setup. Use the Solar Panel Cost Calculator when generation is the main project.
Battery storage should be estimated separately because capacity, inverter setup and electrical work change the cost. Use the Solar Battery Cost Calculator if storage is part of the plan.
EPC improvement costs can combine insulation, heating and solar upgrades into one planning estimate. Use the EPC Improvement Cost Calculator when the goal is a better EPC rating.
If this work is part of a bigger home improvement plan, use the Project Planning Tools hub to compare budgets, value uplift and renovation planning options.
CostIntel calculators use project-specific inputs rather than one flat average. For energy and heating upgrades, the estimate may consider system type, property type, size, access, specification level, regional labour variation and contingency.
The goal is to create a planning range that helps users compare likely costs before requesting installer quotes. A qualified installer or contractor needs to inspect the property before confirming a fixed price.
For more detail, read our methodology, pricing data and how costs are calculated.
CostIntel pages are designed to explain what drives the estimate, what is included, what may be excluded and why an on-site quote is still needed before work begins.
See how CostIntel structures calculator assumptions, project scopes and estimate ranges.
Read the CostIntel methodologyReview how pricing data is handled and why estimates are shown as planning ranges.
View pricing data notesUnderstand how labour, materials, access, region and contingency can shape an estimate.
See how costs are calculatedExplore supporting cost guides for broader home improvement planning.
Browse cost guidesStart with the calculator that matches the project you are pricing. Use the Boiler Installation Cost Calculator for boiler replacement, the Heat Pump Cost Calculator for low-carbon heating, the Solar Panel Cost Calculator for electricity generation, the Solar Battery Cost Calculator for storage, the Insulation Cost Calculator for heat loss and the EPC Improvement Cost Calculator for whole-home efficiency planning.
Insulation can affect heat demand, radiator performance and the final scope of a heat pump installation. If the home loses heat quickly, use the Insulation Cost Calculator before relying on a heat pump estimate.
Solar panels and solar batteries can be part of the same project, but they should be estimated separately. Solar panels are priced around generation capacity and roof layout, while batteries are priced around storage capacity, inverter setup and electrical work.
A boiler replacement is often a simpler installation when replacing an existing boiler like for like. A heat pump can involve extra work such as radiator upgrades, hot water storage or insulation improvements, so the total project scope may be wider.
Use the EPC Improvement Cost Calculator when the goal is to improve the property’s EPC rating. EPC improvement costs can involve insulation, heating system upgrades, solar panels or a combination of measures.
No. CostIntel estimates are planning ranges based on typical UK cost drivers. A qualified installer needs to inspect the property, confirm the specification and check site conditions before giving a fixed quote.
