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Best Air Source Heat Pumps in the UK: Complete Overview (2025)
- The best choice for an air source heat pump is the Samsung Eco Heating System (EHS) range which offers a balance of efficiency, reliability, and warranty coverage.
- Ideal Logic Air R32 stands at top when it comes to efficiency in the UK with its outstanding Seasonal Coefficient of performance (SCOP) rating up to 5.19.
- The biggest advantage of a heat pump is the high efficiency. This is typically 200-400%, meaning 2-4kWh of heat output for every 1kWh of electricity input, which helps in significant energy savings.
Air source heat pumps are clever devices that give you a warm and cosy house without leaving you with sky-rocketing energy bills. They offer several benefits like energy efficiency, cost saving and lower carbon footprint. These systems extract heat from the air outside and transfer it to your homes for central heating and hot water.
You also have government air source heat pump grants like the Boiler Upgrade Scheme available to help you out with your costs. With these in mind, we realise that air source heat pumps are a great option for homeowners who are looking for an environmentally friendly option to reduce energy bills.
Let’s dive into our review process involving efficiency ratings, warranty periods, customer feedback, and expert opinions. Here is the overview of the best air source heat pumps in the UK market:
| Heat pump model | Category | Warranty | Power output (kW) | Type | Starting price (incl. installation) |
|---|---|---|---|---|---|
| Samsung Eco Heating System | Best overall | 2 - 7 years | 4 - 16kW | Air-to-water | From £3,223.69 |
| Ideal Logic Air R32 | Most efficient | 2 years | 4 - 12kW | Air-to-water | From £2,906.38 |
| Hitachi Yutaki | Most Powerful | 5 years | 4.3 - 24kW | Air-to-water | From £2,577.60 |
| Aira Heat Pump | Best for warranty | 15 years | 6 - 12kW | Air-to-water | From £5,450 |
| Mitsubishi Ecodan | Most affordable | 3 years | 5 - 14kW | Air-to-water | From £2,003.78 |
| Daikin Altherma 3 | Best in cold temperatures | 3 - 7 years | 4 - 16kW | Air-to-water | From £2,073.60 |
| Vaillant aroTHERM | Best in high temperatures | 2 - 7 years | 3.5 - 12kW | Air-to-water | From £3,444.61 |
| Panasonic Aquarea L Series | Best for small homes | 7 years | 5 - 9kW | Air-to-water | from £3400 |
Air source heat pumps offer significant benefits over traditional heating systems, including higher efficiency, lower running costs, and reduced CO2 emissions. But with the market heating up faster than a well-insulated living room, how do you choose the right one?
That's where we come in to help you upgrade your home heating system. Don't spend hours researching and contacting installers on your own. Let us help you find the best deal! Simply complete our quick 30-second form, and we'll connect you with up to 4 trusted installers in your area for free, no-obligation quotes. Click below to get started and take the first step towards a more efficient and environmentally friendly home heating solution.
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- Our air source heat pump review process
- Best heat pumps in the UK
- Best overall: Samsung Eco Heating System (EHS)
- Most efficient: Ideal Logic Air R32
- Most powerful: Hitachi Yutaki
- Best for warranty: Aira Heat Pump
- Most affordable: Mitsubishi Ecodan
- Best in colder temperatures: Daikin Altherma 3H HT 14kW
- Best in higher temperatures: Vaillant aroTHERM plus 7kW
- Best for small homes: Panasonic Aquarea L Series
- Which heat pump is best for your home?
- FAQ
Our air source heat pump review process
Our review process for air source heat pumps involves a thorough analysis of several factors to ensure that we provide accurate and helpful recommendations to you, the UK homeowners. Choosing the right heat pump is a very important decision and we aim to make this process simple for you by providing depth and transparency in our research. We evaluate using trusted sources like manufacturer specifications, government energy ratings, and verified customer reviews from trusted online sources like TrustPilot.
We dig-deeper and give you information like warranty terms, noise levels, customer reviews, and environmental impact. By combining technical data and researching homeowner priorities in the UK, we aim to provide you with unbiased recommendations that will help you make your decision.
Here is what we will look at:
Technical specifications and performance
We analyse key performance indicators such as the Coefficient of Performance (CoP) and SCOP values. CoP value measures a heat pump's efficiency over an entire heating season. For some models, only SCOP values were available, which reflect seasonal performance rather than specific CoP values under fixed conditions.
For example, the Vaillant aroTHERM heat pump achieves a SCOP of 5.03 in average climate conditions which means that it produces over 5kW of energy for every kilowatt consumed.
Energy efficiency ratings
We consider the Energy Related Product (ErP) ratings, with many top models achieving A+++ ratings for central heating. This rating system helps you understand the energy efficiency of different heat pump units and how that will help with energy costs.
Output capacity and suitability
We evaluate the range of outputs available for each heat pump model, typically from 3.5kW to 24kW, to determine their suitability for different house sizes. For instance, the Daikin Altherma 3 range offers outputs from 4kW to 16kW, which helps cater to various home sizes.
Noise levels and certifications
Quietness is an important factor, so we look for models with low noise levels and relevant certifications. The Ideal Logic Air, for example, has received Quiet Mark certification, indicating its low noise operation.
User reviews and customer satisfaction
We analyse customer feedback from platforms like TrustPilot to gauge real-world performance and user satisfaction. Brands like Daikin and Vaillant consistently receive high ratings, with scores of 4.2/5 and 4.4/5 stars, respectively.
Awards and industry recognition
We take note of industry awards and recognition, such as the Ideal Logic Air winning awards at the InstallerSHOW 2023, which can indicate innovation and quality.
Price and value for money
We consider the initial air source heat pump cost of the unit and installation, as well as long-term savings potential. For example, the Mitsubishi Ecodan with models starting from £2,003 onwards.
Warranty period
The length and extensiveness of warranties are important factors in our review process. Many leading brands offer warranties ranging from 5 to 7 years, while companies like Aira provide customers with almost 15 years, providing peace of mind for homeowners for years to come.
Environmental impact
We assess the environmental friendliness of each heat pump, including the type of refrigerant used and its global warming potential.
By considering all these factors, we aim to provide a comprehensive overview of the best air source heat pumps available in the UK market, helping homeowners like you make informed decisions based on their specific needs and circumstances.
Best heat pumps in the UK
In 2025, the market for heat pumps in the UK continues to evolve and offers its customers a wide range of high-performance air source heat pumps to meet diverse customer requirements.
Each home is unique and when you choose a heat pump, you need to look into your personal requirements over the most popular heat pump manufacturer in the market. Further in this section, the best air source heat pumps across different categories are explored, highlighting their unique features and key specifications.
Note: The performance of air source heat pumps can vary based on numerous factors such as the environmental / surrounding conditions, size of property, air source heat pump installation methods, etc.
Best overall: Samsung Eco Heating System (EHS)
The Samsung EHS heat pumps stand out as the best overall air source heat pump, offering an impressive balance of high efficiency, performance, and features with a compact design for easy installation. This system is versatile and can produce high temperature water up to 70°C. It also performs well during colder temperatures with an operating range down to -25°C.
Specifications
- Price: Starts at £3,223.69
- Output: 5.2kW - 16kW
- CoP (Heating): 5.05
- Energy efficiency class: A+++
- Dimensions(WxHxD): 1270 x 1018 x 530 mm
- Sound level: 47 dB(A) in low-noise mode
- Refrigerant: R290 and R32 (depending on the model)
- Warranty: 2 years standard warranty. Extended warranty up to 7 years
Most efficient: Ideal Logic Air R32
The Ideal Logic Air R32 stands at top when it comes to efficiency with its outstanding Coefficient of Performance (COP) rating up to 5.19. The COP measures the efficiency of the pump by considering its performance at different outdoor temperatures during the entire heating season.
The use of R32 refrigerant results in a lower global warming potential which makes it eco-friendly as well. Ideal offers a range of capacities for its air source heat pumps, which are available in 4kW, 5kW, 8kW, and 12kW models, making it suitable for different home sizes.
Specifications
- Price: Starts at £2,906.38
- Output: 4kW - 12kW
- SCOP: 5.19
- Energy efficiency class: A+++
- Dimensions (WxHxD) : 1095 x 798 (or 1008mm) x 518 mm
- Sound level: 52-55 dB(A) depending on the mode
- Refrigerant: R32
- Warranty: 2 years
Most powerful: Hitachi Yutaki
Larger properties or homes require higher heating demands as the air source heat pump needs to constantly and efficiently generate heat to account for the larger space.
Hitachi developed its Yutaki heat pump range as an energy-efficient one. At the same time, this range has the best air source heat pumps in terms of power output capacities, which range from 4.3 to 24kW.
Specifications
- Price: Starts at £2,577.60
- Output: 4.3- 24kW
- CoP: 5.25
- Energy efficiency class: A+++
- Dimensions (WxHxD): 410 x 840 x 1330 mm or 370 x 1252 x 1380 mm
- Sound levels: 35-38 dB(A) at 3 meters in low sound mode
- Refrigerant: R32
- Warranty: 5 years
Best for warranty: Aira Heat Pump
Aira Home offers a 15 years product and installation warranty, which shows its customers the confidence the company has in the performance and longevity of their products. This includes all parts of the product, the labour and all necessary maintenance of the product.
Specifications
- Price: Starts at £5,450
- Output: 6kW - 12kW models
- SCOP: 4.7 (Average 35°C)
- Energy efficiency class: A+++ (35°C) /A++ (55°C)
- Dimensions (WxHxD): 1216 x 1005 x 425 mm
- Sound level: 56-57 dB(A)
- Refrigerant: R290
- Warranty: 15 Years
Has this made you curious about which air source heat pump is the best for your home? Gathering multiple quotes to compare the best deal for you can take hours. To make your decision easier, we will match you with the reliable suppliers of air source heat pumps in your area. We will provide you with up to 4 different quotes that fit your needs and budget. You can avoid researching by using our service with no binding obligations, completely free of charge. Get started by simply filling out the form below.
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Most affordable: Mitsubishi Ecodan
Mitsubishi's Ecodan line is our number one pick for houses looking for an air source heat pump that is both dependable and reasonably priced. Mitsubishi offers a variety of models for various property sizes and heating requirements, with unit costs starting at £2,003.
Mitsubishi's Ecodan range includes: Ecodan R32 Ultra Quiet PUZ - Monobloc, Ecodan R32 Compact PUZ - Monobloc (ideal for smaller properties) and Ecodan R32 Zubadan PUZ - Monobloc (designed for larger homes).
Specifications
- Price: Starts at £2,003.78
- Output: 5-12kW
- CoP: 3.5 to 4.5
- Energy efficiency class: A+++
- Dimensions (WxHxD): 1020 x 1350 x 330 (+30) mm
- Sound level: 58 dB(A)
- Refrigerant: R32
- Warranty: 2 years (extendable when registered)
Best in colder temperatures: Daikin Altherma 3H HT 14kW
The Daikin Altherma 3 H HT 14kW shines in its performance during cold climates. The system can operate efficiently at temperatures as low as -28°C. It is also suitable for various home sizes with 14kW output.
Specifications
- Price: £5,042.88
- Output: 14kW
- SCOP: upto 4.86
- Energy efficiency class: A+++ (35°C) / A++ (55°C)
- Dimensions (WxHxD): 1270x990x460 mm (Outdoor unit) ; 440x840x390mm (Indoor unit)
- Sound level: 35 dB(A) in low sound mode
- Refrigerant: R32
- Warranty: 3 years standard if registered via Stand by Me or 12 month warranty. Extended warranty available up to 7 years.
Best in higher temperatures: Vaillant aroTHERM plus 7kW
The Vaillant aroTHERM plus 7kW is designed to operate efficiently in high temperature environments, making it suitable for homes with conventional radiators. It is capable of producing very high temperature water up to 75°C without compromising on efficiency.
Specifications
- Price: Starts at £3,444
- Output: 7kW
- SCOP: Up to 5.03
- Energy efficiency class: A+++ (35°C) / A++ (55°C)
- Dimensions (WxHxD): 1100x965x450 mm
- Sound level: 55 dB(A)
- Refrigerant: R290 (natural refrigerant)
- Warranty: 12 months from installation
Best for small homes: Panasonic Aquarea L Series
Panasonic Aquarea L Series offers heat pumps that are highly reliable even at low temperatures and are a great fit for your smaller homes. They have a lower power output capacity of 5 - 9kW, making it only suitable for smaller houses in the UK.
Specifications
- Price: Starts at £3,400
- Output: 5 - 9kW
- SCOP: up to 5.12
- Energy efficiency class: A+++
- Dimensions (WxHxD): 980 x 996 x 430 mm
- Sound level: 8dB(A)
- Refrigerant: R290
- Warranty: 7 years
Which heat pump is best for your home?
Choosing the right heat pump for your home can depend on various factors, including your property size, insulation levels, and specific heating requirements. While there are several excellent air source heat pump options available in the UK market, finding the perfect match requires careful consideration.
Top-rated brands like Mitsubishi Electric, Samsung, and Daikin have consistently received high marks from UK homeowners. For instance, Mitsubishi Electric's Ecodan range was voted the Best Heat Pump Brand for 2025 by UK consumers, reflecting its reliability and customer satisfaction.
The best air source heat pump for your home will offer a balance of efficiency, performance, and value for money. When selecting a heat pump, consider the following:
- Efficiency ratings: Look for high Coefficient of Performance (CoP) values. The Ideal Logic Air R32, for example, boasts an A+++ ErP efficiency rating.
- Temperature output: If you have an older home with traditional radiators, a high-temperature heat pump like the Daikin Altherma 3H HT might be more suitable.
- Noise levels: For quieter operation, consider models like the Vaillant aroTHERM plus, which offers low noise levels and doesn’t cause too much disturbance.
- Warranty: Brands like Aira Home offer extended warranties, with guarantees of up to 15 years which helps you be tension-free for a long period of time.
- Smart features: Some models, like those from Samsung, focus on smart technology and innovation which can be very attractive to tech-savvy users.
To make sure you get the most suitable heat pump for your home, it's crucial to consult with experienced air source heat pump installers who can assess your property and get several heat pump quotes. This process can take you days when done alone.
Don't waste time trying to figure it out on your own – let us help you find the perfect heat pump for your home. Fill out our quick 30-second form, and we'll connect you with up to 4 trusted installers in your area who can provide free, no-obligation quotes tailored to your specific needs. Take the first step towards efficient, eco-friendly heating today!
- Quotes from local installers
- Payment by finance available
- Save £7,500 with BUS grant
