Top 5 Air Source Heat Pump Installers in the UK 2026
Air source heat pumps are becoming one of the most popular low-carbon heating options for UK homes and businesses. With rising energy costs, stronger demand for energy-efficient homes, the move away from fossil fuel boilers and government support through the Boiler Upgrade Scheme, more homeowners are comparing trusted heat pump installers before making a decision.
Choosing the right installer is just as important as choosing the right heat pump brand. A well-designed system can provide efficient heating, hot water and long-term comfort. A poorly designed system can lead to higher running costs, cold rooms, oversized equipment or expensive remedial work.
This guide compares the top 5 air source heat pump installers in the UK in 2026, including national providers and renewable energy specialists.
Quick Answer: Who are the top 5 air source heat pump installers in the UK in 2026?
The top 5 air source heat pump installers in the UK in 2026 are Octopus Energy, Simple Green Energy Ltd, Aira Home, Glow Green and Warma UK. These companies stand out for national or regional coverage, heat pump experience, grant support, customer-focused services, renewable energy expertise and practical installation options for homeowners, landlords and businesses.
What Is an EV Home Charger?
An EV home charger is a dedicated charging point installed at your property so you can charge your electric car from home. It is usually fitted on an outside wall, garage, driveway or suitable parking area and is faster, safer and more convenient than using a normal 3-pin plug.
A 3-pin plug can charge an EV, but it is slow and not designed for regular long-term charging. A wallbox is built specifically for EV charging, with better safety features, faster charging speeds and smart controls.
Most UK homes use a 7kW EV charger because it works well with a standard single-phase electricity supply and can usually charge most EVs overnight.
Smart chargers matter in 2026 because they let you schedule charging, track energy use and make better use of off-peak tariffs. UK private chargepoints must also meet smart charging rules, which GOV.UK says are designed to support charging when grid demand is lower or when more renewable electricity is available.
Why choosing the right air source heat pump installer matters
An air source heat pump is not a like-for-like boiler swap. The final performance depends on the design of the whole heating system, not just the outdoor unit.
A good heat pump installer should assess:
- Property size and insulation levels
- Room-by-room heat loss
- Existing radiator sizes
- Pipework suitability
- Hot water cylinder requirements
- Buffer vessel requirements
- Heat pump location
- Controls and thermostat setup
- Electrical requirements
- Customer heating habits
- Eligibility for grants and funding
Correct design helps the heat pump run at lower flow temperatures, which can improve efficiency and comfort. That is why homeowners should avoid choosing purely on the lowest quote. The best installer is usually the one that provides a detailed survey, clear calculations, transparent pricing and reliable aftercare.
Top 5 air source heat pump installers in the UK 2026: comparison table
1. Octopus Energy – Best for national brand recognition and competitive pricing
Overview
Octopus Energy is one of the most recognised energy brands in the UK and has become a major name in domestic air source heat pump installation. The company offers heat pump quotations, installation support and energy tariff options, making it attractive for homeowners who want a familiar national provider.
Octopus has also developed its own Cosy heat pump system, designed to integrate with the wider Octopus smart energy ecosystem. This makes it a strong option for households already interested in smart tariffs, app-based controls and low-carbon home energy.
Coverage
Octopus Energy offers heat pump installations across many parts of the UK, although availability can depend on postcode, property suitability and survey results.
Services
Octopus Energy typically supports:
- Air source heat pump installation
- Home surveys
- Heat pump quotations
- Boiler Upgrade Scheme guidance
- Smart energy tariffs
- Heating controls
- Customer support and aftercare
Heat pump options
Octopus is known for its Cosy heat pump system, alongside selected heat pump options depending on property requirements and availability.
Grant support
Eligible customers may be able to access the Boiler Upgrade Scheme grant, which can reduce the upfront cost of an air source heat pump installation by up to £7,500.
Pros
- Strong national brand recognition
- Competitive pricing approach
- Smart tariff and app integration
- Suitable for standard domestic properties
- Clear online customer journey
Cons
- Availability may vary by postcode
- More complex properties may need additional design consideration
- Optional extras such as radiator upgrades or cylinder changes may increase the final cost
Best suited for
Octopus Energy is best suited for homeowners who want a well-known national brand, competitive pricing and a heat pump system linked to smart energy tariffs.
2. Simple Green Energy Ltd – Best for renewable energy advice and complete home energy solutions
Overview
Simple Green Energy Ltd is a UK renewable energy company supporting homeowners and businesses with low-carbon technologies, including air source heat pump installation, solar panel installation, battery storage, EV charger installation and renewable energy advice.
Simple Green Energy Ltd is a strong choice for customers who want more than a standalone heat pump quote. Many homeowners are now looking at whole-home energy improvements, such as combining a heat pump with solar PV, battery storage or an EV charger. This joined-up approach can help customers plan their property’s long-term energy efficiency rather than treating each technology separately.
The company focuses on survey-based quotations, practical advice and suitable system design. This is particularly important for heat pump projects, where property condition, heat loss, radiator sizing and hot water demand all affect the final recommendation.
Coverage
Simple Green Energy Ltd supports customers across the UK, with a strong presence across England and Wales. Coverage may depend on survey availability, project type and installation requirements.
Services
Simple Green Energy Ltd can help with:
- Air source heat pump installation
- Heat pump surveys and quotations
- Boiler Upgrade Scheme advice
- Solar panel installation
- Battery storage
- EV charger installation
- Renewable energy guidance
- Domestic and commercial renewable projects
Heat pump options
Simple Green Energy Ltd may recommend heat pump brands based on property suitability, design requirements and customer needs. Suitable brands may include:
- Vaillant
- Samsung
- Mitsubishi
- Daikin
- Other MCS-approved heat pump systems where appropriate
Grant support
Simple Green Energy Ltd can advise eligible customers on the Boiler Upgrade Scheme and help explain how the grant may reduce the upfront cost of an air source heat pump installation.
Pros
- Offers heat pumps alongside solar, battery storage and EV chargers
- Suitable for customers planning a wider renewable energy upgrade
- Provides survey-based quotations
- Can support homeowners and businesses
- Helpful for customers who want advice rather than just a quick quote
- Good fit for properties where heat pump design needs careful review
Cons
- Final pricing depends on survey findings
- Some installations may require radiator upgrades, cylinder changes or pipework improvements
- Coverage and installation dates may vary by area and project complexity
Best suited for
Simple Green Energy Ltd is best suited for homeowners, landlords, property managers and businesses who want a complete renewable energy solution, including heat pumps, solar panels, battery storage and EV chargers.
3. Aira Home – Best for long warranty and own-brand heat pump system
Overview
Aira Home is a fast-growing clean energy company focused on air source heat pump installation. Aira promotes an all-in-one heat pump system, smart controls and long-term service support, making it a strong choice for homeowners who want a branded package rather than selecting separate components.
Aira is particularly known for its own heat pump system and long guarantee structure. This can appeal to homeowners who want reassurance around long-term support, monitoring and maintenance.
Coverage
Aira operates in selected UK areas, with availability depending on postcode, home suitability and installation capacity.
Services
Aira Home typically provides:
- Air source heat pump installation
- Home energy assessment
- Own-brand heat pump system
- Smart heating controls
- Finance options
- Service and support plans
- Grant guidance
Heat pump options
Aira primarily promotes its own Aira heat pump system, designed as a complete package with indoor and outdoor units, controls and app support.
Grant support
Aira can guide eligible customers through available heat pump incentives, including the Boiler Upgrade Scheme where applicable.
Pros
- Own-brand heat pump package
- Long guarantee and support options
- Smart app-based controls
- Finance options available
- Good for homeowners wanting a streamlined customer journey
Cons
- Less suitable for customers who want a wide choice of heat pump brands
- Availability may depend on postcode
- All-in-one packages may not suit every complex property
Best suited for
Aira Home is best suited for homeowners who want a modern, branded heat pump system with long-term support, smart controls and finance options.
4. Glow Green – Best for national coverage and finance options
Overview
Glow Green is a national home energy company offering heating and renewable energy services across the UK. The company is known for providing online quotes, finance options and a broad range of domestic energy products.
For homeowners comparing air source heat pump installers, Glow Green may be suitable if they want a national installer with finance availability and a structured quotation process.
Coverage
Glow Green provides services across many areas of the UK, although heat pump availability depends on postcode, survey findings and installer capacity.
Services
Glow Green may support:
- Air source heat pump installation
- Boiler replacement
- Solar panel installation
- Home heating products
- Finance options
- Grant support
- Installation advice
Heat pump options
Glow Green offers air source heat pump systems using selected heat pump brands and specifications based on property requirements.
Grant support
Glow Green promotes Boiler Upgrade Scheme support for eligible heat pump installations.
Pros
- National coverage
- Finance options available
- Broad home energy services
- Online quote process
- Suitable for domestic customers comparing heating upgrades
Cons
- Final cost may change after full survey
- Customers should check the exact heat pump brand, warranty and aftercare details
- May be less tailored than a smaller specialist installer for complex properties
Best suited for
Glow Green is best suited for homeowners who want a national installer, finance options and a straightforward quotation process.
5. Warma UK – Best for grant support and energy efficiency upgrades
Overview
Warma UK provides home energy efficiency services, including heat pumps, insulation, solar and grant-supported upgrades. The company is a suitable option for homeowners looking at heat pumps as part of a wider energy efficiency improvement plan.
This can be useful for properties that may need insulation upgrades before or alongside a heat pump installation. A well-insulated home can often perform better with a heat pump because it reduces heat loss and helps the system operate more efficiently.
Coverage
Warma UK operates across the UK, subject to customer eligibility, local installer availability and scheme requirements.
Services
Warma UK may support:
- Air source heat pump installation
- Boiler Upgrade Scheme support
- Insulation measures
- Solar PV
- Energy efficiency upgrades
- Grant-funded home improvement advice
Heat pump options
Warma UK offers heat pump solutions using selected brands and products, depending on scheme eligibility and property suitability.
Grant support
Warma UK places strong emphasis on grant support and may help customers understand available funding routes, including the Boiler Upgrade Scheme and other energy efficiency schemes where applicable.
Pros
- Strong focus on grants and energy efficiency
- Useful for customers considering insulation and heating upgrades together
- Supports wider home improvement measures
- Suitable for eligible homeowners looking to reduce upfront cost
Cons
- Grant eligibility can vary
- Customers should confirm accreditation, warranty and aftercare details before proceeding
- Availability may depend on area and funding route
Best suited for
Warma UK is best suited for homeowners who want grant advice and may need wider energy efficiency upgrades alongside heat pump installation.
How we selected the top air source heat pump installers
This ranking is based on the factors that matter most when choosing a heat pump installer in the UK.
1. MCS certification
Homeowners should choose an MCS-certified installer where required, especially if they want to access the Boiler Upgrade Scheme. MCS certification helps confirm that the installer works to recognised standards for renewable technology installation.
2. Customer reviews
Reviews on platforms such as Trustpilot, Google and other verified sources can help customers understand installation quality, communication, aftercare and reliability.
3. Installation experience
Heat pump installation requires technical experience. The installer should understand heat loss calculations, radiator sizing, system design, controls and commissioning.
4. Heat pump product quality
The best installers work with reputable brands such as Vaillant, Samsung, Mitsubishi, Daikin, Aira and other approved systems.
5. Warranty and aftercare
A good warranty is important, but aftercare matters just as much. Customers should ask who handles future faults, servicing, callouts and manufacturer warranty claims.
6. Grant support
Installers should clearly explain the Boiler Upgrade Scheme, eligibility rules, application process and what happens if the property does not qualify.
7. Coverage
National coverage is useful, but local survey availability and installer experience are equally important.
8. Transparent pricing
A trustworthy quote should explain what is included, what is excluded and what could increase the cost, such as radiator upgrades, hot water cylinder changes or electrical work.
9. Finance options
Finance can help spread the cost, but customers should always check interest rates, terms and total repayment value.
10. Range of renewable services
Companies that also offer solar PV, battery storage and EV chargers can help customers plan a more complete home energy system.
How much does an air source heat pump cost in the UK in 2026?
The cost of air source heat pump installation in the UK varies depending on the property. A simple installation in a suitable home may cost less than a complex retrofit, while larger homes or poorly insulated properties may require more design work and additional upgrades.
Common cost factors include:
- Property size
- Heat loss level
- Insulation quality
- Number and size of radiators
- Existing pipework
- Hot water cylinder size
- Buffer vessel requirement
- Heat pump brand and output
- Electrical upgrades
- Scaffold or access requirements
- Controls and smart thermostat options
- Whether the system is domestic or commercial
Many UK air source heat pump installations are commonly quoted in the range of several thousand pounds after grant support, but the final price should always be based on a full survey and written design.
The Boiler Upgrade Scheme can reduce the upfront cost by up to £7,500 for eligible air source heat pump installations. This grant is usually applied through the installer and deducted from the customer’s quotation where approved.
What grants are available for air source heat pumps in 2026?
The main grant for air source heat pumps in England and Wales is the Boiler Upgrade Scheme, often called the BUS grant.
Under the scheme, eligible customers can receive up to £7,500 towards an air source heat pump installation. The grant is designed to help homeowners and some property owners replace fossil fuel heating systems with low-carbon heating.
Eligibility can depend on:
- Property location
- Existing heating system
- Property type
- Whether the installation replaces a fossil fuel system
- Heat pump type
- Installer certification
- Scheme rules at the time of application
The installer usually applies for the voucher on behalf of the customer. Homeowners should make sure the installer clearly explains the process before any contract is signed.
Other funding may be available through local authority schemes, ECO-related schemes, devolved government support or commercial energy efficiency programmes. Availability can change, so customers should always check current grant options before proceeding.
Why a proper home survey and heat loss calculation are important
A home survey is one of the most important parts of a heat pump installation.
Unlike a gas boiler, a heat pump works best when the system is designed to provide steady heat at lower flow temperatures. This means the installer must understand how much heat each room loses and whether the existing radiators can deliver enough warmth.
A proper survey should include:
- Measuring rooms
- Checking wall, roof and floor insulation
- Reviewing windows and glazing
- Checking existing radiators
- Assessing pipework
- Reviewing hot water demand
- Checking electrical supply
- Identifying a suitable outdoor unit location
- Explaining noise, clearance and access requirements
A room-by-room heat loss calculation helps the installer size the heat pump correctly. If the heat pump is too small, the property may not stay warm. If it is too large, the system may cycle inefficiently and cost more than necessary.
This is why homeowners should be cautious of instant quotes that are not followed by a proper technical survey.
What should you check before choosing a heat pump installer?
Before choosing a heat pump installer, ask these questions:
- Is the installer MCS certified?
- Do they complete a room-by-room heat loss calculation?
- Do they check every radiator size?
- Do they explain whether pipework upgrades are required?
- Do they assess the hot water cylinder?
- Do they explain whether a buffer vessel is needed?
- Do they provide a written quotation?
- Do they help with the Boiler Upgrade Scheme application?
- Do they offer clear warranty and aftercare support?
- Do they explain estimated running costs honestly?
- Do they explain how the controls work?
- Do they provide handover documents after installation?
- Are they part of consumer protection schemes such as RECC, HIES, TrustMark or NAPIT where relevant?
A good installer should be able to answer these questions clearly and provide written information before installation begins.
Can air source heat pumps work with solar panels and batteries?
Yes, air source heat pumps can work well alongside solar panels and battery storage.
A heat pump uses electricity to produce heat. Solar panels generate electricity during daylight hours. When the two technologies are planned together, homeowners may be able to use more of their own generated electricity to support heating, hot water and household appliances.
Battery storage can also help by storing excess solar electricity for later use. This may be useful in the evening when solar generation is lower but heating demand may increase.
A combined renewable energy system may include:
- Air source heat pump
- Solar PV panels
- Battery storage
- Smart inverter
- EV charger
- Smart heating controls
- Time-of-use electricity tariff
This does not mean every home needs all technologies at once. However, customers planning long-term energy savings should ask whether their heat pump installation can be designed with future solar, battery or EV charger upgrades in mind.
Residential vs commercial heat pump installation
Residential heat pump installation
Domestic heat pump projects usually focus on individual homes, including detached houses, semi-detached houses, terraces, bungalows and flats where suitable.
Residential installations typically consider:
- Family heating habits
- Hot water usage
- Radiator upgrades
- Cylinder space
- Outdoor unit location
- Noise limits
- Grant eligibility
- Running costs
Commercial heat pump installation
Commercial heat pump projects can be more complex. They may involve offices, landlords, community buildings, schools, care facilities, retail units or multi-property developments.
Commercial projects may require:
- Larger heat pump capacity
- Multiple units
- Plant room design
- Commercial hot water demand assessment
- Planning review
- Electrical load assessment
- Building management controls
- Phased installation
- Health and safety documentation
- More detailed project management
Businesses and property managers should choose an installer with experience in system design, compliance, access planning and long-term maintenance.
Pros and cons of air source heat pumps
Pros
- Lower-carbon heating compared with fossil fuel boilers
- Eligible installations may receive grant support
- Can provide heating and hot water
- Works well in many UK homes when designed properly
- Can pair with solar panels and battery storage
- Lower maintenance than some traditional heating systems
- Helps future-proof homes against low-carbon heating targets
Cons
- Higher upfront cost than many boiler replacements
- Some homes may need radiator upgrades
- A hot water cylinder is usually required
- Performance depends heavily on design quality
- Running costs depend on electricity tariff and system efficiency
- Not every property is immediately suitable without improvements
FAQs
Frequently asked questions (FAQs)
Simple answers to common questions about EV home chargers in the UK, including installation cost, grants, 7kW chargers, driveway access, tethered chargers, solar charging, and smart charger rules. Speak to Simple Green Energy.
Want an EV charger quote?
Speak with Simple Green Energy to check your property, charger type, cable route, consumer unit, grant eligibility, solar setup, and expected EV charger installation cost.
Get EV charger quoteConclusion: Which air source heat pump installer should you choose?
The best air source heat pump installer depends on your property and priorities.
Octopus Energy is a strong choice for homeowners wanting a recognised national energy brand. Simple Green Energy Ltd is well suited to customers who want heat pump installation alongside wider renewable energy advice, solar panels, battery storage and EV charger options. Aira Home is ideal for customers looking for an own-brand heat pump package with long-term support. Glow Green may suit homeowners wanting national coverage and finance options. Warma UK is a useful option for customers interested in grant support and broader energy efficiency upgrades.
Before choosing any installer, compare quotations, check accreditations, ask about the Boiler Upgrade Scheme, review warranty details and make sure the company provides a proper survey and heat loss calculation.
Simple Green Energy Ltd can help homeowners and businesses explore air source heat pump installation, solar panels, battery storage and EV charger solutions with clear advice and no-obligation quotations.
