Updated: 21st March, 2025
Try a new boiler quote, finance available including 0% APR.
Regular maintenance is essential for a heat pump's longevity. Replacing dirty filters and inspecting the ducts for leaks can prevent many issues.
As the UK moves towards a more sustainable future, heat pumps are quickly becoming the go-to heating solution for homeowners. With higher efficiency and lower emissions than traditional heating systems, heat pumps represent a major step towards net-zero goals.
However, as with any major home investment, regular maintenance and occasional repairs are essential to keep them running smoothly, especially during winter when demands on heating systems peak.
This guide will walk you through everything you need to know about maintaining and repairing your heat pump, whether it’s an air source or ground source system.
We’ll also delve into government incentives available in 2025, common issues and DIY maintenance tips, and how heat pumps compare to traditional gas boilers. By the end, you’ll have the knowledge to make informed decisions on heat pump care, ensuring reliable, eco-friendly warmth throughout the cold season.
Heat pumps are versatile heating and cooling devices that work by transferring heat rather than generating it, making them far more efficient than traditional boilers or electric heaters. They extract thermal energy from a source, like the air, ground, or water, and move it indoors. This ability to both heat and cool makes them especially valuable for year-round climate control.
Heat Capture: Heat pumps capture ambient heat from an outdoor source, such as the air or ground.
Evaporation: The captured heat is absorbed by a refrigerant, causing it to evaporate into a gas.
Compression: The refrigerant gas is compressed, raising its temperature.
Heat Release: The heated gas transfers its energy to your home’s heating system (radiators, underfloor heating, etc.).
Cycle Repeat: The refrigerant returns to a low temperature and reabsorbs heat, continuing the cycle.
Air Source Heat Pumps (ASHPs): Capture heat from the air, even at low temperatures.
Ground Source Heat Pumps (GSHPs): Use the stable underground temperatures for heating.
Heat pumps have been gaining popularity for their efficiency and environmental benefits. Here’s a look at why they are increasingly being chosen over traditional systems:
Energy Efficiency: Heat pumps are highly efficient, often delivering over 300% energy efficiency. For every unit of electricity they use, they can deliver three or more units of heat.
Lower Carbon Emissions: Since they don’t burn fuel, heat pumps produce fewer emissions than gas or oil boilers.
Versatile Heating and Cooling: Heat pumps can heat in winter and cool in summer, making them a versatile choice for home comfort.
Reduced Energy Bills: With high efficiency comes lower energy costs, reducing utility bills over time.
Government Incentives: The UK government offers grants to help offset installation costs, making heat pumps a more accessible choice for many households.
Before installing a heat pump, homeowners should take a few key factors into account to ensure maximum efficiency:
Home Insulation: Good insulation keeps heat in and cold out, improving the effectiveness of heat pumps.
Radiator Upgrades: Some homes may need radiator upgrades to work optimally with low-temperature heat pumps.
Outdoor Space: ASHPs need adequate space around the outdoor unit, while GSHPs require land for trenching or boreholes.
ASHPs capture heat from the air and transfer it indoors. They’re generally more affordable to install than ground source heat pumps, though efficiency may decrease in extremely low temperatures.
To ensure your ASHP operates effectively in winter:
Clear Snow and Ice: Regularly remove any snow or ice buildup from around the unit.
Inspect Filters: Clean or replace air filters monthly to maintain proper airflow.
Set a Steady Thermostat: Avoid frequent temperature adjustments, as they can reduce efficiency.
Defrost Cycle Check: Ensure the defrost function is working, especially in freezing conditions.
GSHPs use underground pipes to extract heat from the ground, where temperatures remain fairly constant. They tend to be more efficient and consistent than ASHPs but have a higher upfront cost and require significant yard space for trenching or boreholes.
Pipe Inspections: Check for any damage to pipes and connections that could lead to efficiency losses.
Monitor System Performance: Ensure the system is maintaining the expected heat output.
Proper Insulation: Good insulation reduces the load on GSHPs, allowing them to run more efficiently.
Supply and Installation: £2,400 - £14,000
Running Costs: £685 - £1,550 per year
Boiler Upgrade Scheme Grants: Up to £7,500 available to offset installation costs
Supply and Installation: £6,000 - £24,000
Running Costs: Varies, but can be lower than ASHPs due to stable underground temperatures
Boiler Upgrade Scheme Grants: Up to £7,500 available
Annual maintenance typically costs between £100 and £200, while more extensive repairs may range from £500 to £2,000. Regular servicing is essential to prevent issues and ensure longevity.
Understanding potential issues can help you avoid unexpected breakdowns and repairs. Here are some common problems:
Dirty Filters: Can restrict airflow, reducing efficiency.
Repair Cost: £20 - £50
Thermostat Issues: Faulty thermostats can cause inconsistent temperatures.
Repair Cost: £150 - £400
Refrigerant Leaks: Low refrigerant can hinder heating performance.
Repair Cost: £200 - £350
Icing on Coils: Ice buildup may indicate airflow problems or a refrigerant issue.
Repair Cost: £200 - £600
Knowing these potential repair costs can help you plan for maintenance and avoid unexpected expenses.
While professional servicing is crucial, some DIY maintenance can extend the life of your heat pump and keep it running efficiently.
Replace Air Filters Regularly: Clean or replace filters every 1-3 months.
Clear Debris Around Outdoor Unit: Ensure the outdoor unit has unobstructed airflow.
Inspect and Clean Coils: Regularly check coils for dust and debris.
Check the Thermostat: Ensure it is calibrated correctly and replace batteries if necessary.
Perform a System Reset: Turn off the power for a few minutes and restart to reset the system.
Annual professional servicing ensures your heat pump’s longevity and performance. Here’s what a standard service includes:
Inspection of Heat Exchanger Fins: Removing dust and debris from the fins to ensure optimal heat transfer.
Cleaning Filters and Coils: Technicians will clean filters and coils to prevent airflow blockages.
Refrigerant Level Check: Ensuring adequate refrigerant levels for efficient operation.
Thermostat Calibration: Ensuring the thermostat accurately reflects home temperatures.
Electrical Connection Checks: Inspecting wiring and connections for potential faults.
Professional services cost between £100 and £200 annually, with prices varying based on location and service complexity.
Modern heat pumps offer advanced features that enhance comfort, efficiency, and convenience:
Smart Controls: Apps and smart thermostats allow remote control and scheduling.
Hybrid Functionality: Some systems combine heat pumps with gas boilers for added efficiency in extremely cold weather.
Silent Operation: New models operate more quietly, making them suitable for noise-sensitive areas.
Energy-Efficient Ventilation: Integrated ventilation systems provide fresh air while conserving energy.
Preparing your heat pump for winter ensures efficient performance during the colder months. Here’s a checklist to help:
Check for Ice Buildup: Clear ice and snow around the outdoor unit.
Ensure Good Insulation: Insulate windows, doors, and walls to reduce heat loss.
Set a Consistent Temperature: Avoid frequently adjusting the thermostat.
Monitor System Performance: Regularly check the heat output.
Schedule Professional Servicing: Arrange an annual service to catch any issues early.
Heat Pump Efficiency: Delivers 300%-400% efficiency, as it moves heat rather than generating it.
Gas Boiler Efficiency: Modern condensing boilers offer around 92%-95% efficiency.
Feature | Heat Pump | Gas Boiler |
|---|---|---|
Initial Cost | £7,000 - £24,000 | £1,000 - £3,000 |
Annual Running Cost | £685 - £1,550 | Moderate |
Lifespan | 15-20 years | 10-15 years |
Environmental Impact | Low (uses renewable energy) | High (fossil fuel-based) |
Heat pumps require a higher initial investment, but their efficiency and environmental benefits can lead to significant savings over time. They’re ideal for eco-conscious homeowners with well-insulated homes, while gas boilers remain a practical option for those looking for a less costly installation.
To encourage a move to renewable heating, the UK government has introduced several incentives for homeowners:
Boiler Upgrade Scheme (BUS): Offers up to £7,500 to replace gas boilers with heat pumps.
Great British Insulation Scheme: Provides support for home insulation, reducing heat pump load and improving efficiency.
Energy Company Obligation (ECO): Requires energy suppliers to help households lower heating costs through energy-saving measures.
By taking advantage of these incentives, homeowners can significantly reduce the cost of transitioning to a heat pump system.
Heat pumps are an energy-efficient, eco-friendly solution for home heating, but they require regular maintenance and occasional repairs to operate effectively, especially during winter. Key points include:
Types of Heat Pumps: Understand the differences between air source and ground source systems.
Maintenance Essentials: Regular maintenance prevents breakdowns and extends the system’s lifespan.
DIY Tips: Simple tasks like cleaning filters can improve efficiency.
Cost Considerations: Installation and repair costs vary, but government grants can ease the financial burden.
Professional Servicing: Annual professional checks ensure optimal performance.
Advanced Features: Modern heat pumps offer smart controls, hybrid functionality, and quiet operation.
Heat pumps represent a major advancement in sustainable home heating. With proper care, they provide reliable, cost-effective heating that benefits both the environment and your wallet. By staying informed and following recommended maintenance practices, you can enjoy the advantages of a heat pump throughout the colder months, contributing to a greener future.
The most common issue with heat pumps is reduced efficiency or performance during very cold weather. This can be caused by a dirty air filter, blocked outdoor unit, or low refrigerant levels. Regular maintenance usually prevents most of these problems.
Yes, most heat pump problems can be repaired by a qualified engineer. Common repairs include fixing electrical faults, replacing sensors, or topping up refrigerant. It's best to act early to avoid more serious issues down the line.
Heat pump repairs typically cost between £100 and £500, depending on the issue and parts required. Minor faults like sensor replacements are cheaper, while major repairs like compressor faults are more expensive.
A well-maintained heat pump usually lasts around 15 to 20 years. Regular servicing and prompt repairs can help extend the lifespan and keep it running efficiently.
A routine heat pump service in the UK generally costs £100 to £200. This includes cleaning the system, checking refrigerant levels, and inspecting for faults. Prices can vary slightly depending on location and the complexity of the system.
Heat pumps should be serviced once a year. Annual maintenance helps keep the system running smoothly, improves efficiency, and reduces the risk of costly breakdowns.
Heat pumps are more expensive upfront due to the cost of installation, specialist labour, and the tech involved. However, they’re more efficient in the long term and are supported by government grants like the £7,500 Boiler Upgrade Scheme, which helps reduce the overall cost.
21st March, 2025
When a boiler starts displaying an error code out of the blue it can be a shock to the sys...
Read Article
21st March, 2025
Regular maintenance is essential for a heat pump's longevity. Replacing dirty filters and...
Read Article
17th March, 2025
A boiler fan is an important part of modern boilers. It ensures proper combustion by pushi...
Read Article
