If you’re thinking about upgrading your home heating, one of the first questions you’ll probably ask is: how much does an air source heat pump cost?
An air source heat pump can provide heating and hot water by transferring heat from the outside air into your home’s heating system. For homeowners in Cornwall and Devon, it can be an alternative to traditional gas, oil and LPG heating.
However, the cost of an air source heat pump depends on several factors, including your property’s size, insulation, existing radiators and the complexity of the installation.
In this guide, we’ll explain typical air source heat pump installation costs, potential government grants, running costs and what to consider before choosing a system.
How Much Does an Air Source Heat Pump Cost in 2026?
According to the Energy Saving Trust, a typical air source heat pump installation costs around £12,000 in the UK before applicable grants.
This is a general guide rather than a fixed price. Your actual air source heat pump cost installed may be higher or lower depending on your property and the work required.
For example, a straightforward installation in a suitable property may require less additional work than an older home that needs radiator upgrades, changes to pipework or a new hot water cylinder.
When comparing quotations, check what each installer includes. The cheapest equipment price does not necessarily represent the lowest overall installation cost.
What Affects the Cost of an Air Source Heat Pump Installation?
Several factors influence the final price of an air source heat pump installation.
1. The size and heating requirements of your property
The size of your home is an important consideration, but floor area alone does not determine which heat pump you need.
An installer should assess your property’s heat loss, insulation, windows and heating requirements to calculate the appropriate system capacity.
A correctly sized heat pump helps maintain comfortable indoor temperatures while supporting efficient operation.
2. Your existing radiators and heating system
Some homes can use their existing radiators with an air source heat pump. Others may benefit from larger radiators or underfloor heating.
Heat pumps generally operate more efficiently when they can provide the required warmth at lower water temperatures. Whether your current heating system can achieve this depends on your property’s heat loss and the size of its radiators.
A professional assessment can identify any upgrades needed before installation begins.
3. The hot water system
Many air-to-water heat pumps provide both central heating and domestic hot water.
Depending on your existing setup, you may need a compatible hot water cylinder, new controls or changes to your current heating system.
These requirements should be considered when calculating the total cost of an air source heat pump installation.
4. Installation complexity
The location of the outdoor unit, accessibility of the property, pipework routes, drainage and electrical requirements can all affect installation costs.
Older properties and homes with limited outdoor space may require additional planning.
A site survey helps establish the practical requirements and provides a clearer picture of the work involved.
Are There Government Grants for Air Source Heat Pumps in 2026?
Eligible homeowners in England and Wales may be able to receive support through the government’s Boiler Upgrade Scheme.
The published grant amounts include:
- £7,500 towards an eligible air source heat pump.
- Up to £9,000 for certain eligible off-grid properties replacing qualifying oil or LPG heating systems, subject to the scheme’s conditions and the applicable grant rules.
Eligibility requirements apply, and funding arrangements can change. Check the latest official guidance before making a decision.
You can read more on the official Boiler Upgrade Scheme website.
How much could an air source heat pump cost after a grant?
Consider an illustrative installation costing £12,000.
If the property qualifies for a £7,500 grant, the remaining amount would be £4,500.
If it qualifies for a £9,000 grant, the remaining amount would be £3,000.
These examples are calculations, not guaranteed quotations. Your actual installation price, eligibility and final contribution will depend on your circumstances and the work required.
Your installer should explain the relevant grant requirements and how the application process works before you commit.
How Much Does an Air Source Heat Pump Cost to Run?
The air source heat pump running costs you experience will depend on your property’s heating demand, electricity tariff, system efficiency and how you use your heating.
Unlike a conventional electric heater, a heat pump transfers heat from the outside air rather than generating all the heat directly from electricity.
This can make it an efficient heating option, but savings are not guaranteed for every property.
The main factors affecting running costs include:
- Insulation: A well-insulated home generally requires less heat to maintain a comfortable temperature.
- System efficiency: Correct system sizing, installation and commissioning are important.
- Electricity tariffs: The price you pay for electricity affects your total running costs.
- Heating controls: Appropriate settings and schedules can help the system operate efficiently.
- Hot water demand: Household usage affects the amount of energy required.
Before investing, consider the upfront installation price alongside your expected ongoing energy costs. A professional assessment can help you understand the requirements of your particular property.
For further information, read the Energy Saving Trust’s guide to air source heat pumps.
Are Air Source Heat Pumps Suitable for Homes in Cornwall and Devon?
Many homes across Cornwall and Devon can be suitable for an air source heat pump, but the right solution depends on the individual property.
An assessment should consider the building’s heat loss, insulation, existing heating system, outdoor space and hot water requirements.
This is particularly important for older homes and rural properties that currently rely on oil or LPG heating.
The aim is to identify a suitable system that meets your heating needs, rather than choosing equipment based on price alone.
If you’re considering an installation, visit our air source heat pump services page to learn more about the surveys, system design, installation and ongoing maintenance offered by Regan Air.
Why Arrange a Professional Air Source Heat Pump Survey?
A survey helps you understand the requirements of your property before committing to an installation.
During the assessment, an installer can review:
- Your property’s heating demand and heat loss.
- The appropriate heat pump capacity.
- Whether your existing radiators are suitable.
- Hot water requirements and system controls.
- Outdoor unit positioning and access.
- Pipework, drainage and electrical requirements.
- Potential additional work and applicable grant eligibility.
This information helps you compare quotations more confidently and understand what is included in the proposed installation.
Air Source Heat Pump Installation in Cornwall and Devon
Regan Air provides air source heat pump surveys, system design, installation, commissioning, servicing and repairs across Cornwall and Devon.
Based in Liskeard, the company serves homeowners and businesses in locations including Plymouth, Saltash, Bodmin, Truro, St Austell and Exeter.
Every property has different requirements, so the best starting point is a survey and quotation tailored to your home.
If you’re considering an air source heat pump, explore our heat pump installation and servicing services or contact Regan Air to arrange a survey.
We’ll help you understand the options available for your property and the work required to plan a suitable installation.
Frequently Asked Questions
How much does an air source heat pump cost to install?
The Energy Saving Trust gives a typical UK installation cost of around £12,000 before applicable grants. The final price depends on your property’s heating requirements, system design and any additional work needed.
Can I get a grant for an air source heat pump in Cornwall or Devon?
Eligible properties in England may qualify for the Boiler Upgrade Scheme. The amount available depends on the system, property and applicable scheme conditions. Check the current government guidance before proceeding.
Will an air source heat pump reduce my energy bills?
It may reduce your heating costs, but the outcome depends on your existing heating system, electricity tariff, insulation and the efficiency of the new installation.
Do I need to replace my radiators?
Not always. Some existing radiators can work with an air source heat pump, while others may need upgrading. A heating assessment can help determine what is appropriate for your home.
Are air source heat pumps suitable for older homes?
They can be suitable for many older properties, but insulation, heat loss, radiator sizing and installation requirements need to be assessed carefully.
How do I get an air source heat pump quotation in Cornwall or Devon?
Contact Regan Air to discuss your property and arrange a survey. The assessment can help establish the appropriate system, installation requirements and a quotation tailored to your home.
Considering an air source heat pump for your home?
Contact Regan Air to discuss your requirements and arrange a survey.
Explore our air source heat pump services or get in touch with our team.