Is my Property in the UK Suitable for a Heat Pump?

Written-by

Janet Richardson

Reviewed-by

Richard Burdett

Updated on

Jun 30, 2026

Is my Property in the UK Suitable for a Heat Pump?

Many factors must be considered before choosing to install a heat pump system in your home or business.

The main factors to consider are:

How Energy Efficient is your Property? 

Heat pumps work best in well insulated, airtight properties. Although there are now high-temperature heat pumps capable of achieving flow temperatures similar to those of gas boilers, standard heat pumps are designed to operate at a lower temperature. We'll cover this in more detail later in the article. 

How Suitable is your Central Heating System?

Heat pumps often require double or over-sized radiators. Wet underfloor heating is often considered the optimal solution, although appropriately sized radiators can also work very well. The pipework should be 15mm or larger, central heating systems with short runs of microbore pipework could be usable but, you may incur additional cost and upheaval if your pipework is 10mm or smaller throughout.

Some properties may also require upgrades to consumer units, electrical circuits or incoming electricity supplies before a heat pump can be installed. 

Will My Home's Electrical Supply Be Suitable?

Many homeowners worry that installing a heat pump means they will need a new electricity supply. In most cases, this isn't necessary. During the survey, your installer will check your home's electrical system, including the consumer unit, to make sure it can safely support the new equipment.

Some properties may need minor electrical upgrades, particularly if the consumer unit is older or already close to capacity. These improvements are usually straightforward and will be explained before any installation work begins.

Heat pumps work particularly well alongside solar panels because some of the electricity needed to run the system can be generated on-site. Although it's not the perfect marriage - you need heating in the winter when the days are shorter and darker and your solar panels aren't generating as much, solar panels will still help run a heat pump to some extent, or at least offset the running costs through the Smart Export Guarantee.

And Finally.. What is your Budget? 

A small air-to-air heat pump can cost as little as £2,000–£4,000 to install, depending on specification and number of indoor units. Since April 2026, air-to-air heat pumps have been eligible for a £2,500 grant through the Boiler Upgrade Scheme (BUS) in England and Wales, subject to the scheme's eligibility requirements.

An air-to-water heat pump (by far the most common) starts at around £7,000–£9,000 but can go up to £15,000–£17,000 for a normal three or four bedroom property, depending on installation complexities, brand choice and installer costs. The initial cost is greatly reduced when you factor in the Boiler Upgrade Scheme which can provide £7,500 towards the cost of your heat pump.

Ground source heat pumps (GSHP) are among the most efficient heating systems available, but do carry a high price tag, starting at around £18,000–£20,000 and often going to £35,000+. 

Visit our 2026 article, How much do heat pumps cost to install, run, and maintain? for more info. 

Feature	Good Candidate?
EPC C or better	✓ Excellent
Good loft insulation	✓
Larger radiators	✓
Underfloor heating	✓ Excellent
Outdoor space	✓
Existing combi boiler	Usually suitable
Solid walls	Often suitable after assessment

Heat Pumps for Older Properties? 

We often get asked the question 'Do heat pumps work in poorly insulated properties?'

Your property’s level of insulation will impact heavily upon the cost and energy efficiency offered by air and ground source heat pumps. Although insulation is also needed for traditional boilers, you’re more likely to feel the effects of inadequate insulation with heat pumps as they are designed to produce an ambient heat on an ongoing basis, rather than the blast of heat from a traditional combustion boiler. Heat pumps provide a lower, more consistent level of heat over longer periods rather than delivering short bursts of high-temperature heat like a traditional boiler.

If your home is properly insulated, it will be able to retain heat, and you’ll be able to enjoy the benefits of an air source heat pump but there are some caveats, which we will address later in this article. Without adequate insulation, however, you could find yourself switching up the thermostat more often, which will increase your bills.

There are high temperature heat pump options which are capable of reaching comparable temperatures to combustion boilers, but these typically operate at lower efficiency and higher running cost, (see more here) but in this article we will focus on traditional heat pump systems.

Here are some ways you can assess and improve your home's insulation:

• Wall Insulation: Make sure your walls are adequately insulated. For homes with cavity walls, cavity wall insulation can be installed. Solid wall homes might need external or internal insulation.
• Loft Insulation: Loft insulation is especially important as a significant amount of heat can escape through the roof. Ensure your loft is insulated to the recommended 270mm of thickness.
• Floor Insulation: Insulating floors, particularly in older homes with suspended wooden floors, can prevent heat loss.
• Windows and Doors: Double or triple glazing and draught-proofing around windows and doors can significantly reduce heat loss.

Is it Worth Installing a Heat Pump for my UK Property?

Though heat pumps are usually very efficient, local climate can affect their performance. In the UK, air-source heat pumps are specifically designed to work efficiently even in colder temperatures (down to around –15°C and in some models –25°C). However, extremely low temperatures can reduce efficiency, and correct system sizing becomes increasingly important rather than requiring a backup heat source in most homes.

If you are replacing a mains gas boiler, heat pump running costs will depend heavily on the design of the system, the insulation levels of the property, electricity and gas prices, and the tariff you are on. A well-designed heat pump can be cheaper to run than a gas boiler, but a poorly designed system may cost more, particularly if the property is poorly insulated or the heat pump has to operate at higher flow temperatures.

Heat pumps work most efficiently at lower flow temperatures, which is why they often perform best with underfloor heating or larger radiators. As the electricity grid continues to decarbonise and more flexible energy tariffs become available, heat pumps are expected to become one of the lowest-carbon heating options for UK homes.

The initial cost of installing heat pumps may be prohibitive for some as they tend to be more expensive than traditional heating systems. However, they offer long-term savings due to their efficiency. The UK government is also offering attractive incentives such as the Boiler Upgrade Scheme (BUS), which can provide £7,500 towards the upfront costs. Air source heat pump installations typically cost between £7,000 and £14,000, and ground source heat pumps between £18,000 and £35,000, depending on property and installation complexity. When applying for grants like the Boiler Upgrade Scheme, you no longer need to provide a valid Energy Performance Certificate (EPC) at the application stage, which saves time and streamlines your renovations. 

It is essential that your property is ready for the installation of a ground source heat pump (GSHP) to ensure optimal efficiency. GSHPs operate at lower flow temperatures than traditional boilers. They perform significantly better with underfloor heating or oversized, modern radiators as the heat emitters need larger surface areas to radiate the same amount of heat. Your property needs to be well insulated as lower flow temperatures mean your home loses heat slowly. If your property has poor insulation, the heat will escape faster than the system can supply it, causing the heat pump to run constantly and massively driving up your electricity bills. While not a requirement, an EPC rating of C or above is often considered a good starting point for achieving strong heat pump performance. You will also need enough internal space to house the indoor unit and large hot water cylinder. Unlike combi boilers that provide instant hot water, heat pumps require a separate, much larger cylinder to store and heat water gradually. You will need a designated utility room, garage, or large cupboard to house this cylinder and the indoor pump unit, which can be the size of an American fridge freezer. 

When compared to traditional boilers heat pumps require less maintenance. Regular checks and servicing will ensure optimal performance and longevity. The expected lifespan of a heat pump is around 15–20 years on average, compared to 10–15 years for a conventional boiler.

Many more people today want to live a more sustainable lifestyle and reduce their carbon footprint. Heat pumps can help you do this as they have significantly less of an impact on the environment compared to fossil fuel-based heating systems. They can reduce your home’s carbon footprint, especially if paired with renewable electricity sources. If you switch to a heat pump you are contributing to the UK's target of reducing greenhouse gas emissions.

Property Value Impact Associated with Installing a Ground Source or Air Source Heat Pump

Will a heat pump increase my property value?

Although there is currently little definitive evidence to suggest that heat pumps will guarantee an increase in property value, there has been some research conducted in recent years indicating that energy-efficient homes equipped with low-carbon heating systems may attract greater buyer interest and achieve higher sale prices than less efficient properties.

Research published in the 2022 ‘Better Homes, Cooler Planet’ report by the World Wildlife Fund (WWF-UK) and Scottish Power suggested that installing a heat pump could increase a property's value by between 1.7% and 3%. Other studies including research conducted by the Department of Business, Energy & Industrial Strategy (BEIS) have found that homes with stronger Energy Performance Certificate (EPC) ratings and lower running costs can command a premium in some areas of the housing market. However, any increase in value will depend on factors such as location, property type, local demand, and the quality of the installation.

A heat pump may make a property more attractive to prospective buyers because it can:

• Improve the home's EPC rating.
• Reduce heating-related carbon emissions.
• Lower energy bills when correctly designed and operated.
• Futureproof the property as the UK transitions towards low-carbon heating.
• Provide cooling capabilities in some cases, depending on the system installed.

While a heat pump should first and foremost be viewed as a way to improve energy efficiency and reduce carbon emissions, it may also make your property more attractive to environmentally conscious buyers and those looking to reduce their future energy costs.

The value put on the heat pump system by the estate agent or by the future buyer will most likely be down to personal preference and a few other factors such as the temperature at the time of the sale and recent seasonal variations. A very cold winter may make it more likely that a buyer will put a high value on a pre-installed heating system that is cost-effective and adequately heats the property.

If two identical homes were side by side, a buyer would most likely go for the home with the heat pump system, but how much extra would they be willing to pay to cover your costs which will usually be more than £5000 that the heat pump system set you back in the first place? Well, it’s impossible to say at this time. A new roof for example doesn’t add much to your property but an old or damaged roof will certainly detract from the value of a property. So perhaps a new heat pump system might not add much value, but an old inadequate gas boiler system may detract from a property’s value. Make sure your estate agent knows the value of the heat pump system and sells it to the prospective viewer in the best way possible.

A real estate appraiser will most likely see your heat pump system as a contributory factor and add a small amount of value to the asking price but generally, they will see it as part of the whole and describe it as an additional appeal.

Legislation and Planning Permission Associated with Air and Ground Source Heat Pumps

Air Source heat pump planning considerations

Across the UK, air source heat pumps are generally considered permitted development subject to national rules and local exceptions. The permitted development rules for air source heat pumps vary across England, Scotland, and Wales. Requirements relating to boundary distances, noise levels, unit size and location have changed over time and differ between nations.

Before installing a heat pump, you should check the latest planning guidance for your part of the UK or consult your installer to ensure the proposed location complies with current regulations. 

Key points (which vary by nation):

• In most cases, permitted development rights apply to a single air source heat pump (ASHP) installation. Detached properties in England can usually install up to two air source heat pump units (ASHPs) without planning permission subject to current permitted development rules. Additional units may require planning permission, depending on the circumstances and local regulations. In Scotland and Wales, permitted development is restricted to a maximum of one ASHP unit per property. In England and Wales, you can find out more information on the Government’s Planning Portal website: http://www.planningportal.gov.uk/planning/greenerhomes/generation/heatpumps. The Scottish Government’s permitted development information can be found here: https://www.gov.scot/publications/householder-permitted-development-rights-guidance-updated-2021/pages/6/ 
• Additional planning restrictions may apply if your property already has certain renewable energy installations, such as a wind turbine. Your installer or local planning authority can advise whether this affects your permitted development rights.
• If your heat pump is out of service and no longer needed, planning rules may require the equipment to be removed.
• The installation of an air source heat pump in England and Scotland must comply with recognised Microgeneration Certification Scheme planning and noise standards (MCS 020a Planning Standard) to qualify for permitted development rights. Under the MCS 020 Planning Standard, the noise level typically cannot exceed 42 dB (A) at the nearest habitable room (e.g., a bedroom or living room window) of a neighbouring property. You should check the Welsh Government Planning Portal for up-to-date guidance on national planning rules. It’s also important to ensure the defrost cycle condensate does not drip onto footpaths, which can freeze and create slip hazards. 
• The outdoor unit should be positioned to minimise its impact on the appearance of the property and the surrounding area. In England, the previous strict "1-metre from property boundary" requirement has been removed. Units can be installed closer to fences, provided they satisfy noise restrictions. Additional planning restrictions may apply to outdoor units installed on front-facing walls, roofs, or in locations visible from a public highway. Your installer can advise on the most suitable location and whether planning permission is required. To avoid applying for formal planning permission under permitted development rules, your air source heat pump or air conditioning outdoor unit in Scotland must be located at least 1 metre away from the property boundary. Scottish permitted development rules are more restrictive than those in England, but visibility from a public road is not automatically prohibited in every situation. In Scotland It is not permitted to site an ASHP on a wall above ground floor level that fronts a highway. In Wales, ASHP units must generally be kept at least 3 metres away from the property boundary.
• The outdoor unit must be installed on a stable, suitably supported surface, such as a ground-mounted base, wall bracket or, in some cases, a flat roof. Additional planning and structural considerations may apply to roof-mounted installations, and requirements vary across the UK. Direct installation on pitched roofs is uncommon and is generally not recommended. In Scotland, installations cannot be placed on pitched roofs and if placed on a flat roof, the installation must sit at least 1 metre from the roof's edge.
• There are regional rules that specify the maximum size an outdoor compressor and its housing can be before you are required to apply for full planning permission: The size limit of the external compressor (the outdoor unit and housing) in England is no longer 0.6m3. Under the updated UK Planning Portal guidelines, the maximum allowable volume for a house is1.5m cubed (the stricter 0.6m cubed limit now only applies to blocks of flats). In Wales, the limit is no longer 1m cubed. Changes introduced by the Welsh Government mean the maximum size has been increased to 1.5m cubed for houses (and 1.3m cubed for blocks of flats). In Scotland, the outdoor unit must not exceed a maximum height of 3 metres, and its overall volume is also capped at 1.5m cubed.
• In England, the 1-metre protrusion limit for the external unit has been scrapped. You are allowed more flexibility in sizing and positioning, provided you stay within volume limits and noise guidelines. In Scotland, the external unit must not protrude more than 1 metre from any external wall, roof plane, roof ridge, or chimney. Under current Welsh Permitted Development, no part of the heat pump (including housing) can protrude more than 1 metre from the outer surface of an external wall or roof.
• If you own a listed building in England, Scotland, or Wales, Permitted Development (PD) rights do not apply. You will need Full Planning Permission and Listed Building Consent (LBC) from your local authority. For England & Wales you must apply to your local planning authority for Listed Building Consent. Applications are submitted via the Planning Portal. Local authorities rely heavily on guidance from Historic England on Heat Pumps to ensure the installation does not negatively impact architectural heritage. For Scotland you must apply for Listed Building Consent and potentially Planning Permission. The Historic Environment Scotland website provides extensive guidance on retrofitting and obtaining consent for low carbon micro renewables. 

Ground Source Heat Pump planning considerations

Ground source heat pumps (GSHPs) can usually be installed under permitted development rights, meaning planning permission is not normally required. However, there are some important exceptions. Factors such as the size of the system, available land, environmental constraints, and whether your property is listed or located in a conservation area can all affect what permissions are needed.

Before starting any excavation or groundwork, it is important to check that the installation complies with the latest planning rules, environmental regulations, and Building Regulations.

Key points (which vary by nation): 

• Ground source heat pumps are usually considered permitted development due to their limited visual impact, though local authority and environmental permissions may still be required, particularly for boreholes. If you are installing boreholes, you may need a permit or need to register an exemption with the Environment Agency depending on the depth and local water table vulnerability. Both the Scottish Environment Protection Agency (SEPA) and Natural Resources Wales require strict adherence to pollution prevention and groundwater protection guidelines when drilling into deep aquifers (underground layers of water-bearing, permeable rock, gravel, sand, or silt). Most residential ground source heat pumps are closed loop systems which means that fluid circulates entirely within the buried pipes but if you are using an open loop system and plan to extract and return water from a groundwater source (open-loop), you will need specific licenses to abstract and re-inject the water. There is also legislation in place that applies to non-domestic sites but is highly recommended for domestic sites, which requires the land to be restored to its previous condition as far as is reasonably practicable once the microgeneration equipment is no longer needed.
• Regardless of the location of the ground source heat pump, additional planning restrictions may apply if your property is listed or located within a conservation area, National Landscape (formerly AONB), National Park, or other designated area. When installing a large ground source heat pump, if your ground loop array exceeds 0.5 hectares or if you intend to install more than one heat pump, planning permission is required. 
• The installation must comply with the Microgeneration Certification Scheme Planning Standard across England, Scotland, and Wales, if you are going to take advantage of the government’s Boiler Upgrade Scheme (BUS). It’s important to choose an installer who is accredited and part of the Microgeneration Certification Scheme (MCS). You can search our installer database for a list of accredited installers close to your postcode here. 
• A qualified installer or geo-technician should perform a ground survey to evaluate your soil type, as different soils (e.g., clay vs. sand) conduct heat differently and affect overall system efficiency. 
• Most UK properties can accommodate a heat pump, but achieving the best results depends on factors such as insulation, available space, your existing heating system, and the overall suitability of the property. While some homes may require upgrades, advances in heat pump technology and generous government grants are making low-carbon heating more accessible than ever.
• The best way to find out if a heat pump is right for your home is to arrange a professional assessment. If your property is suitable, a heat pump could help lower your carbon emissions, improve energy efficiency, and provide reliable heating for many years to come.