Extract heat from the air
The outdoor unit absorbs heat energy from surrounding air, even when outdoor temperatures are low.
Air Source Heat Pumps Air source heat pumps
Air source heat pumps
for homes and businesses.
Smarter, more energy-efficient heating for homes and businesses. Our own MCS-certified team designs and installs air source heat pumps around your property, energy requirements and long-term sustainability goals.
- Up to £9,000Boiler Upgrade Scheme grant
- ~3×Heat per unit of electricity, in suitable conditions
- MCSCertified heat pump installer
- 0%VAT currently on home installs
BUS grants up to £9,000Applied for and redeemed on your behalf
MCS MIS 3005Heat pump-specific standard
PAS 2035 alignedReady for fabric-first retrofit
Part L compliantFuture Homes Standard ready
Overview
Smarter, cleaner heating
Smarter, cleaner heating
for your property.
At Synergy Power, we help homeowners and businesses move towards smarter, more energy-efficient heating with modern air source heat pump technology. An air source heat pump extracts heat energy from the outside air and transfers it into your property to provide space heating and, with a suitable air-to-water system, hot water. Instead of generating heat by burning gas or oil, it uses electricity to move existing heat energy.
Whether you are upgrading your home heating, planning a new commercial development or reducing the carbon footprint of an existing building, Synergy Power can help you explore a heating solution tailored to your property, energy requirements and long-term sustainability goals.
Our goal is simple: comfortable buildings, efficient energy use and cleaner heating for the future.
How it works
How does an air source
How does an air source
heat pump work?
An air source heat pump collects heat from outdoor air, upgrades it through a refrigeration cycle and transfers it into a building.
Increase the temperature
A compressor raises the refrigerant’s temperature so heat can be transferred to the building.
Heat your property
Air-to-water systems can supply compatible radiators, underfloor heating and stored domestic hot water.
Use electricity efficiently
Under suitable conditions, a well-designed heat pump can deliver around three units of heat per unit of electricity. Actual seasonal performance varies.
Why Synergy Power
Why choose
Why choose
Synergy Power?
Heating designed around your property. Every building has different heating demands. Synergy Power’s proposed approach is to consider the property’s size, insulation, existing heating system, hot-water demand and energy usage before recommending a solution.
Property assessment
Understand current heating requirements and identify suitable options.
System design
Match capacity to calculated building heat loss and expected demand.
Heating integration
Assess radiators, underfloor heating, pipework and hot-water storage.
Solar integration
Explore how solar PV, compatible controls and electricity tariffs could work alongside the heat pump.
Installation planning
Consider outdoor-unit placement, noise, access and relevant building requirements.
Long-term efficiency
Explain system controls, maintenance and energy monitoring.
What's in an install
Inside an
Inside an
MCS-compliant ASHP.
Six components make the difference between a heat pump that just about works and one that runs efficiently.
- 01
MCS room-by-room heat loss
Every design starts with a proper heat-loss calculation, not a rule of thumb such as "match the old boiler's kW".
- 02
ASHP outdoor unit
The outdoor unit that absorbs heat from the surrounding air, sized from the heat-loss calculation for your property.
- 03
Unvented cylinder
A new 150-300 L cylinder sized to your household, with fast recovery and low standing losses.
- 04
Radiator / UFH upgrades
Radiators sized for 60°C flow are swapped for lower-temperature models (K3 or larger) so the pump runs at its maximum SCOP.
- 05
Weather compensation
An outdoor sensor and weather compensation come as standard, avoiding the fixed flow temperature set-up that reduces efficiency in many heat pump installations.
- 06
Hot water & Legionella cycle
A weekly thermal cycle to G3-compliant temperatures keeps stored hot water safe and compliant.
Homes and businesses
Heat pumps for homes
Heat pumps for homes
and businesses.
Residential air source heat pumps
Air source heat pumps can be a strong option for homeowners looking to replace conventional fossil-fuel heating with an efficient electric alternative.
- Heating and hot water: suitable air-to-water systems can provide central heating and domestic hot water.
- Efficient energy use: heat pumps transfer environmental heat rather than generating all heat from electricity.
- Reduced direct emissions: no combustion takes place at the property during normal heat pump operation.
- Solar PV compatibility: a suitably configured solar system can supply some of the electricity used by the heat pump.
- Smart energy management: compatible controls and tariffs may help shift some consumption to cheaper periods.
- Future-ready homes: low-carbon heating can support wider home energy improvement and decarbonisation plans.
Commercial air source heat pumps
Commercial properties can have significant heating and hot-water requirements. Replacing fossil-fuel heating with a suitably designed heat pump system can help businesses reduce direct dependence on gas or oil and work towards their environmental objectives.
- Reduce reliance on on-site fossil-fuel combustion.
- Support carbon-reduction targets and sustainability reporting.
- Potentially reduce heating energy consumption when well designed and operated.
- Integrate with solar PV and compatible building energy-management systems.
- Improve visibility of heating energy use through monitoring and controls.
- Investigate eligible government grant support for qualifying non-domestic properties.
Companies we install
Heat pump brands
Heat pump brands
we install.
Choose a brand to see its heat pumps, outputs and key features.
Mitsubishi Electric
Ecodan air source heat pumps, including the Ecodan R290 with guaranteed operation down to -25°C and water temperatures up to 75°C.
-25°C Guaranteed operation (Ecodan R290)75°C Water temperature (Ecodan R290)
View heat pumps
Stiebel Eltron
HPA-O outdoor air source heat pumps for heating and cooling, using the natural refrigerant R290, for new builds, modernisation and existing buildings.
R290 Natural refrigerantHeat + cool Heating and cooling in one unit
View heat pumps
Worcester Bosch
Worcester Bosch
Compress air-to-water heat pumps, including the compact Compress 5800i AW, built for UK homes and UK weather and Quiet Mark certified.
A+++ Rated heating (Compress 7001i AW)Quiet Mark Certified (Compress 5800i AW)
View heat pumps
Product range
Product range
Product range
and descriptions.
The heat pump models we install from each manufacturer, with their outputs and key features.
Ecodan air source heat pumps
Air-to-water heat pumps with A+++ heating efficiency at 35°C and MELCloud remote control, monitoring, maintenance and technical support.
- Ecodan R290 (5, 6, 8.5, 10 and 12 kW): guaranteed operation down to -25°C and water temperatures up to 75°C, using low-GWP R290 refrigerant.
- Ecodan R32 (6.0, 8.5 and 11.2 kW): a single-fan outdoor monobloc designed to satisfy domestic permitted development standards (MCS 020), with market-leading low noise levels.
- Ecodan R32 Compact (5.0 kW): a compact single-fan monobloc for homes with a smaller heat demand.
HPA-O air source heat pumps
Outdoor air source heat pumps for heating and cooling, using the natural refrigerant R290, for new builds, modernisation and existing buildings.
- HPA-O Trend (4.91 to 17.36 kW): an optimum price-performance ratio, with high efficiency and quiet operation even at high output.
- HPA-O Plus (7.09 to 13.15 kW): impressively efficient and exceptionally quiet, for flexible installation where space is restricted, in anthracite or white.
- Both work with classic radiators or underfloor heating, with app control even when you are out (additional components required).
Compress air-to-water heat pumps
Built for UK homes and UK weather, with easy-to-use temperature controls and a lower carbon footprint.
- Compress 7001i AW: super quiet with super-high efficiency and A+++ rated heating, with a range of outputs for larger homes.
- Compress 5800i AW: Worcester Bosch’s quietest heat pump, Quiet Mark certified, with a sleek, compact outdoor unit and remote monitoring via the HomeCom Easy app.
Product photos
Heat pumps
Heat pumps
in detail.
Product photos of the heat pumps we install.
Mitsubishi Electric EcodanStiebel Eltron HPA-OWorcester Bosch Compress
UK government grant
Boiler Upgrade Scheme
Boiler Upgrade Scheme
grants.
The Boiler Upgrade Scheme (BUS) is a government scheme that provides upfront grants to help reduce the cost of installing heat pumps and biomass boilers in homes and non-domestic buildings. The scheme is open in England and Wales.
The scheme is installer-led. Installers who are MCS certified can apply for and redeem Boiler Upgrade Scheme vouchers on behalf of property owners. If you are considering a heat pump or biomass boiler, you apply through an MCS-certified installer such as Synergy Power to help reduce the upfront cost.
Solar PV + heat pumps
Solar PV and
Solar PV and
heat pump integration.
For suitable properties, combining an air source heat pump with solar PV can help improve overall energy management.
Solar generation and heat demand do not always coincide, especially in winter. The best design depends on consumption, solar generation, battery capacity and heating requirements.
Talk to our team
Get a heat pump quote, including your BUS grant.
Tell us your postcode and current heating fuel. One of our heat pump advisers will call you back within one working day to discuss your home, check your eligibility for the Boiler Upgrade Scheme and apply for the grant on your behalf.
- One-working-day callback from a UK advisor
- MCS-certified design by our in-house UK team
- GDPR compliant, we never sell your details
- Fixed-price quote after a free site survey
Our process
From enquiry to
From enquiry to
first winter.
Five clear steps, typically taking 4-8 weeks from survey to commissioning.
Step 01
Eligibility check
We check BUS eligibility, your EPC and whether insulation improvements would help first.
Same dayStep 02
MCS heat-loss survey
Our engineer measures heat loss room by room, plus radiator sizes and airing-cupboard space.
1-2 hours on siteStep 03
Tailored design & quote
A room-by-room design, radiator or underfloor heating upgrade schedule, cylinder specification and running-cost comparison with gas.
Within 7 daysStep 04
Install & commission
We remove the old boiler, fit the ASHP and cylinder, upgrade radiators and commission weather compensation.
3-7 days on siteStep 05
MCS & BUS handover
We issue your MCS certificate and, as your MCS-certified installer, redeem your Boiler Upgrade Scheme grant on your behalf, so it comes off the cost of your installation.
Grant handled in-house
Accredited & certified
The credentials a BUS grant claim needs.
MCS MIS 3005 certification for heat pumps, RECC membership and TrustMark registration, so we can apply for the Boiler Upgrade Scheme grant on your behalf.
“A heat pump should be sized from a room-by-room heat-loss survey, not guesswork. That is how we design every system.”Synergy Power · Heat pump design team
Frequently asked
Your heat pump
Your heat pump
questions answered.
Straight answers from our MCS-certified design team.
How much does a heat pump cost after the BUS grant?
As a guide, for a typical UK 3–4 bedroom home the cost to you after the Boiler Upgrade Scheme grant depends on the property, any radiator upgrades and the product you choose, and your fixed-price quote shows it clearly. The grant is £7,500 for an air-to-water heat pump, or £9,000 in eligible off-gas-grid properties until 31 March 2027. The scheme is installer-led, so as your MCS-certified installer we apply for and redeem the grant on your behalf, and you do not need to apply separately.
Am I eligible for the Boiler Upgrade Scheme?
The Boiler Upgrade Scheme is open in England and Wales, for homes and non-domestic buildings, including many owner-occupied and privately rented homes. You will need a valid EPC, the applicant must own the property, and the same installation cannot also receive certain other grants such as ECO. Scheme rules change from time to time, so we check your eligibility against the current rules as part of the quotation.
Will an ASHP work in a cold British winter?
Yes. Modern air source heat pumps are designed to keep working in cold weather, absorbing heat from the outside air even when outdoor temperatures are low. What matters is correct sizing: a system designed from a proper heat-loss calculation is sized to keep your home at its target temperature in cold spells.
Do I need to replace all my radiators?
Usually 3-5 radiators need upgrading (typically to K3 double-panel) so the system can run at lower flow temperatures, which is where the efficiency comes from. Newer properties often need none. Our MCS heat-loss survey shows what each room needs.
How does a heat pump compare with gas on running costs?
Running costs depend on your home, how well the system is designed and the tariff you choose. A well-designed heat pump on a heat pump tariff such as Cosy Octopus can compare well with gas, and we model the likely running costs for your home at survey. With solar and a battery, running costs fall further on sunnier days.
Is the outdoor unit noisy?
Modern R290 units are rated at around 32-38 dB(A) at 3 metres. Under permitted development, MCS planning rules set a 42 dB(A) limit, assessed at the nearest neighbouring door or window, and we check the proposed position against that limit at survey.
Do I need to insulate first?
Good insulation lowers the size and running cost of the heat pump you need, so it is worth checking first. Scheme rules on insulation have changed over time; we check your EPC and the current BUS requirements at survey and, if needed, can arrange insulation upgrades through PAS 2035 partners before the heat pump is installed.
Do I need planning permission for a heat pump?
Most air source heat pumps on houses fall under permitted development, provided the installation meets the MCS planning standards on noise and siting. Listed buildings, conservation areas and some locations may need consent, and we advise on this at survey.
Can I run a heat pump from my solar panels?
Partly. A heat pump uses most energy in winter, when solar generation is lowest, but solar and a battery can still cover some of its use and can heat your hot water on sunnier days. We design heat pump, solar and battery systems to work together.
Do you handle Building Regulations and DNO notification?
Yes. We handle the DNO notification for the additional electrical load and the building regulations notification for unvented cylinder G3 compliance. We upload the MCS documentation to the MCS database and send you the certificate.
Replace your boiler.
A free heat pump eligibility and sizing assessment, with your Boiler Upgrade Scheme grant applied for by us for eligible properties.