Air Source Heat Pumps for UK Homes & Businesses
The UK’s gas boiler ban is approaching. From 2035, new gas boilers will no longer be installed in UK homes, and with the government’s £7,500 Boiler Upgrade Scheme grant available right now, there has never been a better time to make the switch to an air source heat pump (ASHP). Cleaner, more efficient, and future-proof, a well-specified heat pump will heat your home and provide hot water for 20 years or more, at a fraction of the carbon cost of a gas system.
At Energy Solutions, we simplify the entire process. As an authorised reseller partner of Northern Renewable Centre, MCS-certified heating and renewable energy specialists, we connect UK homeowners and businesses with expert heat pump installation, premium systems from leading brands, and full end-to-end grant management. We handle the paperwork, the survey, the installation, and the commissioning, so you can focus on the savings.
Whether you are replacing a gas boiler, an oil-fired system, or electric storage heaters, our team will assess your property honestly and design a heat pump solution that actually works for your home, your radiators, and your budget.
What Is an Air Source Heat Pump?
An air source heat pump is an electrically-powered heating device that extracts latent heat energy from the outside air and transfers it into your home as warmth and hot water. Unlike a gas boiler, which burns fuel to create heat, a heat pump simply moves heat from one place to another, making it inherently far more efficient.
The technology is well-established, with over 160 years of engineering history. Modern ASHP units operate efficiently down to external temperatures of -20°C, making them entirely suited to the UK climate. In practical terms, for every 1 unit of electricity consumed, a heat pump typically delivers 2.5 to 4 units of useful heat, a Coefficient of Performance (COP) that no gas or oil boiler can match.
Estimate my property roof capacityAir-to-Water vs Air-to-Air Heat Pumps
Air-to-Water (most common for UK homes): The heat pump transfers extracted warmth into your wet central heating system, flowing through radiators and underfloor heating circuits, and heating your hot water cylinder. This is the type recommended for replacing gas or oil-fired central heating and is the system eligible for the Boiler Upgrade Scheme grant. Air-to-Air: The heat pump heats (and can cool) air directly within the building using fan coil units. This type does not provide domestic hot water and is more commonly used in commercial settings or as a supplementary heating and cooling solution. It is not currently eligible for the BUS grant.
The £7,500 Boiler Upgrade Scheme (BUS) Grant: Everything You Need to Know
The Boiler Upgrade Scheme (BUS) is the UK government's primary incentive to help homeowners replace fossil fuel heating systems with low-carbon alternatives. For eligible properties, the grant provides £7,500 toward the cost of an air source heat pump installation, significantly reducing your upfront investment.
BOILER UPGRADE SCHEME - KEY FACTS (2025)
BUS Eligibility Requirements
To qualify for the £7,500 BUS grant, the following criteria must be met:
- You are the property owner (homeowners only, not tenants or landlords for rental properties)
- The property is in England or Wales
- The property has a valid Energy Performance Certificate (EPC) issued within the last 10 years
- Any EPC-recommended loft insulation or cavity wall insulation has been installed (or is not applicable)
- The system is installed and certified by an MCS-accredited installer
- The property is not a new-build property
Benefits of Air Source Heat Pumps for UK Homes & Businesses
Dramatically Reduce Your Carbon Footprint
Heating accounts for approximately 40% of the UK's total energy consumption and is responsible for around a third of national carbon emissions. Replacing a gas boiler with an air source heat pump, powered increasingly by renewable electricity from the grid, delivers an immediate, substantial reduction in your property's carbon footprint. For businesses with net-zero commitments, ESG reporting requirements, or sustainability targets, ASHP installation provides measurable, auditable Scope 1 emission reductions that no other heating system can match.
Outstanding Efficiency: Multiply Your Energy Input
A traditional gas condensing boiler converts roughly 90p in every £1 of gas into useful heat. An air source heat pump, by contrast, moves heat rather than generating it, delivering a Coefficient of Performance of 2.5 to 4.0. That means for every £1 of electricity consumed, your heat pump delivers £2.50 to £4.00 worth of heat. No combustion-based heating system comes close to this efficiency ratio. As the UK electricity grid continues to decarbonise and renewable generation increases, the environmental performance of your heat pump will improve automatically over its lifetime, without any change to the system itself.
Significant Heating Bill Savings
Switching from an oil-fired boiler or electric storage heaters to an air source heat pump typically delivers substantial annual savings. Properties switching from LPG or oil heating often see the most significant reductions, as oil and LPG prices are substantially higher per kWh than electricity on heat pump-optimised tariffs. Properties switching from a gas boiler may see modest initial savings or broadly similar running costs depending on the gas-to-electricity price ratio, but as the UK electricity market continues to evolve and smart time-of-use tariffs become more widely available, the economics continue to improve. Pairing your heat pump with solar PV and battery storage can dramatically reduce running costs further by powering your ASHP from self-generated electricity. Explore our Solar PV Systems and Battery Storage pages to understand the full clean energy combination.
Future-Proof Your Property Against the Gas Boiler Ban
New gas boilers will be banned in the UK from 2035. Properties that transition to heat pumps now avoid the uncertainty, and potential installation backlogs, of a last-minute switch. Installing an ASHP today also gives you access to the current £7,500 BUS grant, which may not be available indefinitely as demand grows. Acting early means lower net cost and a longer period to benefit from reduced emissions and energy savings.
Increase Property Value & EPC Rating
An ASHP installation typically improves your property's EPC rating by one or more bands. Research consistently shows that higher EPC-rated properties command a price premium on the open market and sell more quickly. As energy efficiency becomes an increasingly important factor for buyers and mortgage lenders, investing in a heat pump today pays dividends at resale.
Heating and Cooling in One System
Many modern air source heat pumps, particularly air-to-air models and some reversible air-to-water systems, can provide active cooling in summer as well as heating in winter. For properties that currently use separate air conditioning units, a reversible heat pump can consolidate both functions, removing the cost and installation of standalone cooling equipment.
Low Maintenance, Long Lifespan
Air source heat pumps have very few moving parts compared to gas or oil boilers and do not involve combustion, reducing the risk of component failures associated with high-temperature operation. With an annual service, quality systems from brands such as Mitsubishi, Vaillant, Grant, and LG carry manufacturer warranties of 5 years or more, and real-world lifespans of 20 years or longer are common.
Air Source Heat Pump vs Gas Boiler: A Full Comparison
Still weighing up whether a heat pump is right for your property? This side-by-side comparison covers the key differences across efficiency, cost, carbon, and future-readiness:
Gas Boiler
Air Source Heat Pump
Note: The financial comparison depends significantly on your current heating fuel, your tariff, and your property's insulation level. Your free survey will include a personalised cost and carbon comparison specific to your property, so you can make a fully informed decision.
Is Your Property Suitable for an Air Source Heat Pump?
Air source heat pumps are suitable for the vast majority of UK properties,including older homes that might initially seem like challenging candidates. As a general guide, the following conditions support a successful installation:
- Adequate outdoor space for the external unit (typically 1m clearance around the unit)
- Property has or can accommodate a hot water cylinder (required for air-to-water systems)
- Reasonable insulation levels,cavity wall, loft, or solid wall insulation reduces heat demand
- Existing radiators that are appropriately sized or can be upgraded where needed
- Access to a 230V or three-phase electrical supply (three-phase may be needed for larger commercial units)
- No unusually severe planning or access constraints
If your property does not currently tick every box, do not assume it is unsuitable. High-temperature heat pump models (such as the Grant Aerona³ R32 operating up to 65°C) are compatible with most existing radiator systems. Insulation improvements can be arranged as part of the process. Our engineers will carry out a full assessment and give you an honest picture of what is needed,and what is not.
Note: Worried about noise? Modern ASHP units operate at around 40–50 dB at 1 metre, comparable to a refrigerator. UK Permitted Development rules require units to operate below 42 dB at 1 metre from neighbouring properties. We carry out a full noise assessment during the survey to ensure compliance and select the quietest suitable unit for your specific installation.
Heat Pump Brands We Install: Leading Technology, Proven Performance
All air source heat pump installations are carried out by MCS-certified engineers through our partner Northern Renewable Centre. We work with a carefully chosen range of manufacturer-approved brands, selected for efficiency ratings, build quality, warranty terms, and long-term UK parts and service availability:
High-temp output (65°C); compatible with existing radiators
Industry benchmark; quiet operation; smart controls
Premium build; Sensonet smart control; 7-year warranty
High COP; quiet; modular cascade options
Inverter-driven; low noise; wide operating range
SmartThings integration; compact outdoor unit
Trusted boiler brand heritage; strong service network
Flexible flow temps; integrated cylinder options
Air Source Heat Pump Costs in the UK: With and Without the BUS Grant
Installation costs vary depending on system size, property type, radiator condition, and any associated works. All residential installations benefit from 0% VAT. The table below shows typical costs before and after the £7,500 Boiler Upgrade Scheme grant:
| System Size | Full Installed Cost | BUS Grant | Net Cost After Grant | Indicative Payback |
|---|---|---|---|---|
| 5–8 kW (1–2 bed flat / small home) | £8,000 – £12,000 | £7,500 | £500 – £4,500 | ~5–10 years |
| 8–12 kW (3 bed semi / terrace) | £10,000 – £15,000 | £7,500 | £2,500 – £7,500 | ~5–9 years |
| 12–16 kW (4 bed detached) | £13,000 – £18,000 | £7,500 | £5,500 – £10,500 | ~6–10 years |
| Commercial / large domestic 20+ kW | £18,000+ | BUS / NDRHI applicable | Site-specific | ~5–8 years |
Note: All costs are indicative as of 2025. Your free survey will produce a fully itemised, no-hidden-costs quotation. Payback periods assume typical UK energy prices and will vary depending on your current heating fuel, tariff, and property size.
Flexible finance options are available through our installation partner, allowing you to spread the cost of your installation with fixed monthly payments. With some packages, the monthly finance repayment is broadly offset by the reduction in monthly heating bills from day one.
What Is Included in Your Heat Pump Installation?
Energy Solutions and our installation partner provide a complete, fully managed heat pump transition, not just the unit and a quick fit. Here is what your quotation includes:
- Full site survey and heat loss calculation to correctly size your system
- Supply and installation of your chosen MCS-certified air source heat pump unit
- Hot water cylinder compatible with the heat pump system
- Radiator modifications or upgrades where required, as specified in your survey
- All pipework, electrical connections, and associated plumbing works
- Smart thermostat and controls setup, including smartphone app configuration
- Full commissioning and on-site handover, our engineer walks you through the system
- Complete management of your £7,500 Boiler Upgrade Scheme grant application
- MCS certificate registration, required for grant eligibility and warranty validity
5-year warranty on the heat pump unit; 2-year warranty on all ancillary parts
5-year warranty on labour and workmanship
How Air Source Heat Pump Installation Works: Our 6-Step Process
From your first enquiry to your heat pump running efficiently, here is exactly what to expect when you work with Energy Solutions and our MCS-certified installation partner:
Free Site Survey & Heat Loss Calculation
Our MCS-certified engineer visits your property to carry out a full heat loss assessment, calculating how much heat your home needs at design temperature to maintain a comfortable indoor climate. This calculation determines the correct system size, ensuring your heat pump is neither undersized (struggling on cold days) nor oversized (short-cycling and wasting energy). You receive a fully itemised quotation with no hidden costs and no obligation to proceed.
EPC Assessment & Grant Eligibility Check
We review your Energy Performance Certificate and check your BUS grant eligibility. If your EPC is out of date or missing, we can arrange a new assessment. If any EPC-recommended insulation measures are outstanding, we will advise on the most cost-effective way to address these, a prerequisite for grant eligibility that many installers fail to mention upfront.
System Design & Equipment Selection
Based on the heat loss calculation and your property's characteristics, we design your heat pump system, selecting the optimal unit model and size, specifying the hot water cylinder, identifying any radiator modifications needed, and planning the installation route for pipework and electrics. You are presented with a clear system design and full specification before any work begins.
MCS-Certified Installation
Installation is carried out by our MCS-certified partner engineers to the highest industry standards, typically over two to three days. This covers the outdoor unit installation, hot water cylinder fitting, any radiator upgrades, all pipework and electrical connections, and smart control setup. You will be guided through the system's operation and your monitoring app before the team leaves site.
BUS Grant Application & MCS Registration
Our team submits your Boiler Upgrade Scheme grant application on your behalf and registers your installation with the MCS database, both are required for grant payment and warranty validity. The £7,500 grant is applied directly as a reduction against your installation invoice, so you never have to handle the money or the paperwork yourself.
Commissioning, Optimisation & Ongoing Support
Once your system is live, we fine-tune the operating parameters, flow temperature, schedule, and smart control settings, to maximise efficiency for your specific property and usage pattern. Energy Solutions then provides ongoing energy support: if combining your heat pump with solar PV, battery storage, or an EV charger, or if you want to review your electricity import tariff to find the best heat pump-optimised rate, our consultants are always available.
The Ultimate Clean Energy Combination: Heat Pump + Solar PV + Battery Storage
An air source heat pump dramatically reduces your heating carbon footprint, but it does increase your electricity consumption. The natural complement is a solar PV system that generates the electricity your heat pump needs, with a battery storage unit storing surplus daytime generation for evening heating and hot water demand.
This three-technology combination represents the gold standard of domestic energy independence in the UK:
- Solar panels generate free electricity during daylight hours
- The heat pump uses that electricity to produce heating and hot water at 250-400% efficiency
- The battery stores surplus solar energy for evening and overnight heating demand
- Any remaining grid draw can be timed for cheap off-peak tariff periods
- The Smart Export Guarantee pays you for surplus solar electricity exported to the grid
Air Source Heat Pump Servicing & Maintenance
To maintain your heat pump’s efficiency, protect its warranty, and maximise its working lifespan, an annual service is recommended, just as you would service a gas boiler. Our installation partner provides MCS-certified ASHP servicing across the UK.
What an Annual ASHP Service Covers
- Visual inspection of the outdoor unit, pipework, and electrical connections
- Refrigerant pressure check and system performance test
- Filter clean and coil inspection
- Controls, thermostat, and smart system calibration check
- Hot water cylinder inspection and cylinder thermostat verification
- System efficiency review, flagging any performance degradation
- Service record update, required to maintain manufacturer warranty validity
Performance Monitoring
All heat pump systems installed through our partner include smart monitoring via an app or web portal. This lets you track your system’s COP (efficiency) in real time, view heating schedules, check flow temperatures, and receive alerts if performance drops below expected parameters. For properties with solar and battery also installed, a single dashboard gives you a complete picture of your whole energy system.
Long-Term Running Costs
Beyond the annual service, air source heat pumps have very low maintenance costs compared to gas boilers, no annual gas safety certificate, no flue inspections, no combustion analysis. The main consumable is the refrigerant, which rarely needs attention in a properly functioning system. Inverters and compressors are engineered for 20-year lifespans under normal operating conditions.
Commercial Air Source Heat Pumps for UK Businesses
Businesses across the UK face growing pressure to decarbonise their heating, from regulatory requirements and net-zero targets to ESG reporting obligations and rising gas prices. Air source heat pumps offer a compelling commercial solution: scalable, low-maintenance, and eligible for business-focused incentives including the Non-Domestic Renewable Heat Incentive (NDRHI) and the Commercial BUS scheme.
Applications for Commercial ASHP
Offices and professional premises, replace gas or oil boiler systems with zero-emissions heating
Hospitality and leisure, hotels, restaurants, health clubs with high hot water demand
Light industrial premises, workshop heating, process water preheating
Schools and healthcare, public sector net-zero obligations; grant funding often available
Multi-unit residential (apartments, HMOs), centralised low-carbon heating
Retail, supplement or replace existing heating with efficient, lower-carbon alternatives
Commercial Incentives
Commercial heat pump installations may be eligible for capital allowances, the Non-Domestic Renewable Heat Incentive, and specific public sector grant schemes. Our advisers will outline the incentives applicable to your business at the free survey stage. Combine commercial heat pump installation with a strategic approach to your overall energy costs through our Energy Procurement service, securing competitive import rates on the electricity your heat pump needs.
Why Choose Energy Solutions for Your Air Source Heat Pump?
Heat pump installation is a significant investment, and the quality of the survey, the system design, and the installation itself makes a substantial difference to whether your system runs efficiently for 20 years or becomes an expensive source of frustration. Here is why Energy Solutions is different:
We combine direct access to high-yield, premium-grade tier-1 solar system component stock with fully certified local engineer deployment teams.
MCS-Certified, Fully Accredited
All installations by MCS-certified partner engineers - the mandatory qualification for BUS grant eligibility. No shortcuts, no grey-market installers.
Full Grant Management Included
We handle your entire £7,500 BUS grant application from start to finish. The grant is deducted from your invoice - zero paperwork for you.
Honest Heat Loss Calculations
Every system is sized using a proper heat loss calculation for your specific property - not a rule-of-thumb guess. Correct sizing is the single biggest factor in heat pump performance.
Premium Brands & Full Warranties
Mitsubishi, Vaillant, Grant, LG, Clivet, Samsung, Worcester Bosch - market-leading systems with full UK manufacturer warranties and service networks.
Integrated Energy Strategy
Energy Solutions connects heat pump, solar PV, battery storage, and energy procurement - a joined-up approach that no single-technology installer can offer.
Finance Options Available
Spread the cost with flexible monthly finance through our installation partner. In many cases, monthly payments are offset in part or full by heating bill savings from day one.
Air Source Heat Pumps FAQs
How much does an air source heat pump cost in the UK?
A fully installed air source heat pump in the UK typically costs between £8,000 and £18,000 depending on system size, property type, and any associated works such as radiator upgrades. After the £7,500 Boiler Upgrade Scheme (BUS) government grant, the net cost for most homes falls between £500 and £10,500. Your free survey will include a fully itemised quote with no hidden costs.
What is the Boiler Upgrade Scheme and how do I qualify?
The Boiler Upgrade Scheme (BUS) is a UK government grant of £7,500 that helps homeowners replace fossil fuel heating systems with low-carbon alternatives such as air source heat pumps. To qualify, you must be a homeowner in England or Wales, have a valid EPC (Energy Performance Certificate) dated within the last 10 years, and have any EPC-recommended loft or cavity wall insulation already installed or arranged. Our team manages the entire application process on your behalf.
Do air source heat pumps work in cold UK winters?
Yes. Modern air source heat pumps are engineered to extract useful heat energy from outside air down to temperatures as low as -20°C. Even during a typical UK winter, a well-specified heat pump will operate efficiently and maintain comfortable indoor temperatures. The key is correct sizing and installation, which is why our MCS-certified engineers assess your property thoroughly before designing your system.
Will I need to replace my radiators?
Not necessarily. Modern high-temperature air source heat pumps (such as the Grant Aerona³ R32) can operate at flow temperatures of 65°C or higher, which is compatible with most existing radiator systems. In some cases, where radiators are undersized for the new system’s output, targeted upgrades may be recommended. This is assessed during your free survey, and any required modifications are included in your quotation.
How efficient is an air source heat pump compared to a gas boiler?
A modern gas condensing boiler operates at around 90% efficiency, meaning 90p of every £1 of gas paid for is converted to useful heat. An air source heat pump typically achieves a Coefficient of Performance (COP) of 2.5–4.0, meaning it delivers 250–400% efficiency by moving heat rather than burning fuel. This makes heat pumps 2.5 to 4 times more efficient than even the best gas boilers.
Do I need planning permission for an air source heat pump?
In most cases, air source heat pump installations in England, Scotland, and Wales qualify as Permitted Development and do not require planning permission, provided certain conditions are met (such as noise limits and positioning rules). Exceptions apply to listed buildings and conservation areas. Our team will confirm your specific requirements as part of the free survey.
Can I combine an air source heat pump with solar panels?
Yes, and this is one of the most effective clean energy combinations available. By powering your heat pump with solar-generated electricity, you can dramatically reduce its running costs and carbon footprint. Add battery storage to the equation and you have a fully integrated, low-carbon energy system for heating, hot water, and everyday electricity. Energy Solutions can design the complete package.
How long does air source heat pump installation take?
A standard residential air source heat pump installation typically takes two to three days. This includes installation of the outdoor unit, hot water cylinder, any radiator modifications, pipework, and commissioning. You will be guided through the system’s operation and monitoring app before the installation team leaves.
