PHS Engineers Ltd delivers expert air source heat pump installation, servicing, and repair across all areas of Kent. Whether you’re a homeowner aiming to lower energy bills or a commercial client focused on meeting sustainability goals, our certified engineers provide efficient, high-performance solutions designed to suit the diverse property types found throughout the county.
What is an Air Source Heat Pump (ASHP)?
An air source heat pump (ASHP) is a highly efficient, electrically powered heating system that transfers heat from the outside air into your home. It operates using a refrigeration cycle, similar to a reverse fridge, allowing it to extract usable heat even in low outdoor temperatures.
The most commonly used type in the UK is the air-to-water heat pump, which supplies hot water to radiators, underfloor heating systems, and hot water cylinders. By generating more heat energy than the electricity it consumes, an ASHP can offer efficiencies of 300-400%, making it a more sustainable alternative to gas or oil boilers.
Benefits of an air source heat pump include:
- Lower energy bills
- Reduced carbon emissions
- Minimal maintenance
- Eligibility for government grants such as the Boiler Upgrade Scheme
As London moves towards greener energy targets, air source heat pumps are becoming a preferred solution for both domestic and commercial properties. At PHS Engineers Ltd, we help clients across the capital transition to renewable heating with expertly designed, installed, and maintained systems.
At PHS Engineers Ltd, we provide professional air source heat pump installation across Kent, helping homeowners and commercial clients switch to low-carbon heating with confidence. Our MCS-accredited engineers design and install bespoke systems that align with the heating demands and structural characteristics of your property.
We work with leading brands, including but not limited to:
- Daikin
- Mitsubishi Electric
- Samsung
- Vaillant
- NIBE
- LG
- Hitachi
- Panasonic
- Viessmann
Whether you’re replacing a traditional boiler or integrating a heat pump into a new build, we manage the entire process – from initial consultation and heat loss calculations to commissioning and handover. We also provide guidance on government incentives like the Boiler Upgrade Scheme, which can significantly reduce your upfront investment.
Professional Air Source Heat Pump Installers in Kent
Air Source Heat Pump Servicing in Kent
Maintaining your air source heat pump is essential to keeping it running efficiently and extending its service life. At PHS Engineers Ltd, we offer comprehensive ASHP servicing throughout Kent, ensuring your system operates at peak performance all year round.
Our servicing includes:
- Cleaning filters and heat exchangers
- Checking refrigerant pressure and system flow rates
- Testing electrical components and safety controls
- Verifying system output and efficiency
We recommend annual servicing for domestic systems and more frequent checks for high-demand or commercial applications. Regular maintenance helps prevent breakdowns, preserves warranty cover, and ensures your system continues to deliver energy savings.
If your air source heat pump is showing signs of reduced performance or has failed entirely, our expert repair team is ready to help. Covering the whole of Kent, our F-Gas certified engineers provide prompt, professional repairs on all major ASHP brands.
We routinely fix issues such as:
- System faults and error codes
- Inconsistent heating or hot water
- Unusual noises, vibrations or airflow problems
- Refrigerant leaks and pressure issues
- Electrical faults and control failures
Our engineers carry diagnostic equipment and commonly required parts to resolve most problems on the first visit. Whether it’s an urgent call-out or a planned repair, we work efficiently to restore your system and minimise disruption.
Air Source Heat Pump Repairs in Kent
Is an Air Source Heat Pump Right for my Home?
Air source heat pumps (ASHPs) offer an energy-efficient, low-carbon alternative to conventional heating systems and are well-suited to a wide range of Kent properties. Whether you live in a terraced home, a flat with suitable outdoor space, or a detached house, an ASHP can deliver long-term energy savings while significantly reducing your carbon emissions.
These systems perform best in well-insulated homes, where they can operate efficiently at lower flow temperatures. If your property already meets modern insulation standards or you’re planning upgrades, an ASHP can provide consistent heating throughout the year with minimal electricity consumption.
Important Considerations:
- Outdoor Space: Adequate room is required for the external unit, which must have sufficient airflow.
- Planning Requirements: Most installations are classed as permitted development, but restrictions may apply in conservation areas or listed buildings.
- Heating Compatibility: ASHPs are most efficient when used with underfloor heating or low-temperature radiators.
- Government Incentives: You may qualify for a £7,500 grant through the Boiler Upgrade Scheme to offset installation costs.
If you’re unsure whether an air source heat pump is suitable for your property, PHS Engineers Ltd can carry out a full site assessment and offer expert guidance on system feasibility, expected efficiency, and available funding.
The cost of installing an air source heat pump in the UK typically ranges from £7,000 to £14,000, depending on your property size, system specification, and installation complexity. Commercial systems may cost more.
Key factors affecting cost include:
- Size and heat demand of the property
- Type and brand of the ASHP unit
- Existing heating setup
- Insulation levels
- Labour and commissioning requirements
While the initial investment is considerable, ASHPs offer long-term savings on energy bills, especially when replacing oil, LPG, or electric heating. Grants of up to £7,500 are also available through the Boiler Upgrade Scheme (BUS) for eligible properties.
At PHS Engineers Ltd, we offer transparent pricing and tailored advice to help you choose the most cost-effective solution for your Kent property.
How Much Does an Air Source Heat Pump Cost?
What are the Running Costs of an Air Source Heat Pump?
When designed correctly and fitted in a home with good insulation, air source heat pumps can be up to 300% more efficient than other forms of heating. Here are some numbers to compare:
- ASHP has an input cost of 15.0p/kWh, a running cost of 5.0p/kWh and an efficiency of 300%.
- Mains Gas has an input cost of 4.3/kWh, a running cost of 4.8p/kWh and an efficiency of 89%.
- Electric has an input cost of 15.0p/kWh, a running cost of 15.0p/kWh and an efficiency of 100%.
- Oil has an input cost of 4.9p/kWh, a running cost of 5.3p/kWh and an efficiency of 91.6%.
Please note that these figures can change based on energy prices.
You can also expect that there will be maintenance costs much like other heating sources. In order to maintain your RHI tariff payments, you’ll need to inspect your air source heat pump each year. This can cost around £200 per year if serviced by a qualified heating engineer.
Choosing to install an air source heat pump is a great decision because it gives you access to a number of grants. This is part of the Government’s plan to reduce reliance on fossil fuels and switch to environmentally-friendly options such as air source heat pumps. As such, they have been included in the Renewable Heat Incentive (RHI) which allows you to reduce the cost of installation and also gain access to lower tariff costs at 10.85p/kWh.
The RHI offers homeowners quarterly payments over a seven-year period based on the annual heating consumption of their property, and also the amount of environmentally-friendly energy it produces. At the current rate of 10.85p/kWh for air source heating, you could gain a total of £7,000 through RHI payments over 7 years. This figure is based on an average three-bedroom house that uses 15,000kWh of heating per year.
Air Source Heat Pump Grants
Air Source Heat Pumps FAQs
Since it uses electricity it’s not completely carbon-neutral. However, a heat pump can be a great way to reduce your carbon emissions since it doesn’t use fossil fuels.
It’s recommended to insulate your home and have it up to modern Building Regulation standards to ensure that your air source heat pump can work efficiently.
If your building is well-insulated and you have some space outside your home to install the air source heat pump, then it can be a good choice as an environmentally-friendly way to heat your home.
Air source heat pumps are up to 300% efficient. This means that for every unit of energy it uses, it outputs roughly three times the units in heat energy for the property.
If you’re currently installing or have installed an underfloor heating system, then you’ll be glad to know that an air source heat pump can work perfectly fine with underfloor heating as well. An air source heat pump is extremely efficient when it needs to produce low water temperatures, and this makes it great for an underfloor heating system.
PHS: Air Source Heat Pump Experts in Kent
Whether you’re installing a new air source heat pump, maintaining an existing system, or in need of urgent repairs, PHS Engineers Ltd is here to support you across Kent. Our experienced engineers deliver reliable, high-quality service tailored to your property’s needs. From initial consultation to aftercare, we ensure your transition to low-carbon heating is smooth, compliant, and cost-effective.
Our heatings engineers are available 24/7 all across Kent including but not limited to: Sevenoaks, Dartford, Gravesham, Tonbridge and Malling, Medway, Maidstone, Tunbridge Wells, Swale, Ashford, Canterbury, Shepway, Thanet, Dover.
You can phone us by calling 0208 252 8927, or you can send us an email via our contact page.
Take the next step towards cleaner, more cost-effective heating – we’re here to help every step of the way.