For UK homeowners and companies who are considering changing their heating system to an energy-efficient air source heat pump (ASHP), cost is one of the main considerations. ASHPs vary in price due to a number of different factors which we will outline in this post in order to give you an understanding of the potential cost you might face when upgrading your heating.
The significant determinants of air source heat pumps include the size, capacity, and brand. To get the most cost-effective heat pump option, it is important that your air source heat pump system is matched to your actual need for heat and hot water.
Factor determining cost of ASHPs include the following:
1. Size and Capacity of the Heat Pump:
The size and capacity of the air source heat pump are the most critical determinants of the cost. It is evident that these two are closely interrelated to each other, for the reason that the capacity of the unit generally coincides with the size of the unit. A heat pump’s size is usually rated in British Thermal Units (BTUs) or kilowatts (kW). When it comes to capacity, the general rule is that you will pay more for a larger capacity.
In terms of the residential sector, heat pumps are typically available from 9,000 to 60,000 BTUs (2.6 to 17.6 kW). While the cheaper air source heat pumps used primarily for smaller spaces, like an apartment or a single room, are priced from £2,000 to £4,000. Larger capacity ASHPs for whole-house heating and cooling typically start from around £5,000 but can be well in excess of £10,000+ depending on required size.
Impact of Size and Capacity on Cost:
Generally, when it comes to the cost comparison, it is understood that larger capacity heat pumps come with a larger price tag. This is because of the extra materials, parts, and manufacturing involved in the production of large models.
Based on small, medium and large sized units, average cost of heat pumps in the UK are typically around:
- Small units (5-8 kW): £4,000 – £6,000
- Medium units (9-16 kW): £6,000 – £10,000
- Large units (17+ kW): £10,000 – £16,000
How to Keep Heat Pump Costs Down:
When considering size and capacity and overall cost, it is important to take the following into account:
- Accurate sizing: It is essential that the correct size of heat pump is selected for your property. A heat pump which is too small will not be able to heat or cool very effectively, and on the other hand, too large a heat pump will likely turn on and off frequently, which will reduce the efficiency and might even shorten its life cycle. You can involve a specialist to carry out an adequate heat loss computation of your house. This should enable you to get the right size system.
- Improve insulation: Consider upgrading the insulation in your home for energy efficiency before you install an ASHP. By its very nature, a well-insulated home requires less heating, making it possible to use a smaller and cheaper air source heat pump unit.
- Zoning: Think about creating heating zones in your house. This way, you will manage the heating requirements more effectively and you may not need that high a capacity for your ASHP.
2. Brands Available in the Market:
The second factor associated with the cost of air source heat pumps is the brand or manufacturer. What type of heat pump you wish to install will make a big difference in the cost of the equipment.
Well-known heat pump manufacturers who are capable of delivering top-quality and reliable products have higher priced products. Some of the key players in the ASHP market are as follows:
- Mitsubishi Electric
- Daikin
- Vaillant
- Samsung
- Panasonic
- LG
Each company has its own unique products which they manufacture and deliver with different quality levels, features, and after-sales support, and this impacts on prices. You can find a few popular heat pump models, with an average price as per capacity and model in the below table:
| Brand | Model | Capacity (kW) | Approximate Price (£) |
| Mitsubishi Electric | Ecodan PUHZ-W50VHA2 | 5.0 | 4,500 to 5,500 |
| Mitsubishi Electric | Ecodan PUHZ-HW140YHA2 | 14.0 | 7,000 to 9,000 |
| Daikin | Altherma 3 H HT 14 | 14.0 | 6,500 to 8,500 |
| Daikin | Altherma 3 R | 4.0-8.0 | 5,000 to 7,000 |
| Vaillant | aroTHERM plus VWL 55/6 A | 5.5 | 4,800 to 6,000 |
| Vaillant | aroTHERM plus VWL 125/6 A | 12.0 | 7,500 to 9,500 |
| Samsung | EHS Mono R32 AE050RXYDE | 5.0 | 4,000 to 5,000 |
| Samsung | EHS Mono R32 AE160RXYDE | 16.0 | 8,000 to 10,000 |
| Panasonic | Aquarea J Generation Bi-Bloc | 3.2 to 16.0 | 5,500 to 9,500 |
| Grant | Aerona³ HPID13R32 | 13.0 | 6,000 to 8,000 |
| Hitachi | Yutaki S Combi RAS-4WHVNPE | 11.0 | 6,500 to 8,500 |
| Viessmann | Vitocal 200-A | 4.0-14.7 | 5,500 to 9,000 |
| Worcester Bosch | Compress 7400i AW | 5.0-17.0 | 6,000 to 10,000 |
| LG | Therma V R32 Monobloc | 5.0-16.0 | 5,500 to 9,500 |
| Nibe | F2040 | 6.0-16.0 | 6,000 to 10,000 |
To summarise, the different tiers of the brand mean that heat pump costs tend to fall within the following ranges:
- Budget brands: £4,000 – £8,000
- Mid-range brands: £6,000 – £12,000
- Premium brands: £8,000 – £16,000+
The above costs are exclusive of installation charges and are therefore dependent on the heat pump brand under discussion alone.
Choosing Your Heat Pump Brand:
For great value, when looking at air source heat pumps, you should consider the following factors:
- Thoroughly investigate the various models: Investigate different brands, comparing their features, energy ratings, and customer reviews. Sometimes, the newer companies may have varieties that offer the same functionality at a price more suitable for you.
- Long-term thinking: High-end brands, although expensive at the beginning, tend to make up for it through improved function and life cycles, which in the long run translate into money saving.
- Look for guarantees: Some brands offer extended warranties which add value and make the high initial price seem worthwhile.
- Consult the experienced pros: It is always good to get views from ASHP installers who have experience with the different models of ASHPs. They will help you distinguish the reliable manufacturer’s information and mark out the rest.
3. Installation Cost and Complexity:
Third factor that impacts the cost of air source heat pumps is the installation cost itself. The cost of installations can differ enormously due to the requirements of different buildings and the existing heating set up. Irrespective of the brand model or type, below are some typical costs for different heat pump installation situations:
- Standard installation: £1,500 – £3,000
- Complex installation: £3,000 – £6,000
- Very complex installation: £6,000+
Tips to reduce the cost of installation:
In order to reduce the price of installation, it is recommended to consider some of the following strategies:
- Plan in advance: If you are in the process of building a new house, or doing house renovations, include the installation of ASHP early in your plans. This will bring complexity and costs down.
- Select a location that is easy to reach: Place the external unit in a location that is easily accessed so that installation is uncomplicated and work expenses are decreased.
- Update the existing systems: If possible, use existing heating systems like radiators or underfloor heating systems to reduce installation complexity.
- Get several quotes: Try to get quotes from multiple MCS-certified installers to ensure the finest pricing.
4. Type of Air-Source Heat Pump
Fourth factor impacting the cost of heat pumps is the type of air source heat pump. Air source heat pumps come in a variety of different types, all of which are different price ranges:
- Ductless Mini-Split Systems: These are often less costly to install, especially in homes with no existing ductwork. A single-zone mini-split might cost from £3,000 to £5,000 installed.
- Ducted Systems: These are more expensive, especially when installing ductwork is required or changed. Prices may range from £6,000 to £20,000 or even more.
- Hybrid Systems: These are a combination of a heat pump with a gas boiler element which is used for the backup heating in those areas with extremely cold climates. They are usually pricier, with costs typically £10,000 to £25,000.
5. Geographical Location
Another significant factor contributing to the cost of ASHPs is your geographical location. ASHPs prices can be different in the various locations of the country, especially in relation to labour costs. The factors that influence the regional price differences are among others:
- Local labour costs
- Climate considerations (higher price for units designed for colder climates)
- Regional energy prices (which can affect the long-term cost-benefit analysis)
- Local building codes and permit requirements
For example, the installation costs of heat pumps that are suitable for more northerly parts of the UK might be more costly because of the cold-climate heat pump models that might be required. Labour costs in urban areas will generally be more expensive.
6. Additional Features and Technologies
Modern air source heat pumps feature the latest technology and other beneficial traits that have an impact on cost. Product. These added features enhance the way the equipment works, its efficiency, and the user experience. They might, for instance, include:
- Wi-Fi connectivity for remote control and monitoring
- Advanced air filtration systems
- Variable-speed compressors for improved efficiency
- Noise-reduction technology
- Zoning capabilities for multi-room systems
The provision of the following features typically adds to the cost of an air source heat pump system:
- Basic models: No additional cost
- Smart control systems: £200 – £500
- Variable speed compressors: £500 – £1,500
- Enhanced efficiency features: £500 – £2,000
Careful Considerations to reduce cost:
Additional features will inevitably add to cost, but there is a need to weigh up whether the costs will prove cost-effective in the long-term:
- Evaluate your own preferences: Be sure that the features you choose will really contribute to saving money in your specific situation.
- Think about the long-term earnings: A variable speed compressor might be a little pricier at first, but it will enable you to reduce your power consumption for a long time.
- Group buying options: Some manufacturers provide packages that contain advanced features at a fair price in comparison to individual purchases.
7. Seasonal Timing
The time of year when you follow through on the sale and installation of an ASHP could be last but not the least important factor to influence the cost. Many firms reduce their prices at the time when they are on the off-seasons (primarily spring and fall) when their demand is not at its peak. Dealing with them at that time will often allow you to save about 10-20% of the total cost.
Government Incentives and Grants
Grant incentives have the potential to help decrease the overall cost of a heat pump installation. UK government schemes aimed at replacing old inefficient heating systems with alternatives like heat pumps make them a much more affordable option. The most prominent of these is the Boiler Upgrade Scheme (BUS), which offers the following for eligible households:
- £7,500 grant for air source heat pumps
- £7,500 grant for the ground source heat pumps
How to make use of grant incentives:
The following will allow you to stay up to date with the latest development in the renewables sector and take advantage of the funding opportunities:
- Stay abreast: Know and keep pace with all present and upcoming government schemes on Eco Grants Blogs.
- Confirm your eligibility on ZOA Eco Grants: Make sure that both your property and your intended heat pump system meet the terms and conditions of the available grants.
- The use of MCS-certified installers: Several incentives are subject to fitting by recognized experts only. Find your expert on the Eco Grants contact page.
Conclusion
With costs of an air source heat pump being influenced by the size, capacity, brand, installation complexity, and additional features of air source heat pumps (ASHP), it is clear that having one installed requires a significant investment. The expertise of a heat pump installer will ensure that you receive an air source heat pump that is matched to your needs.
When coupled with available grants, the cost of your heat pump may be a lot less than you at first thought. While the initial cost involved in an ASHP system might appear daunting at first, the reduction in energy bills and carbon emissions make heat pumps an option worth considering for long-term savings.