The Ultimate Maintenance Guide for Heat Pumps
Air-to-air heat pumps are becoming an increasingly popular choice for UK homes and businesses thanks to their impressive energy efficiency, quick installation and ability to provide both heating and cooling from a single system. Their role is even growing further. Under the Future Homes Standard, all new homes built from 2025 must produce 75-80% fewer carbon emissions than those constructed under the 2013 regulations. This shift places heat pumps at the forefront of low-carbon heating solutions.
As these systems become standard in new properties, understanding how to keep them running efficiently becomes more important than ever. Regular maintenance helps ensure an air-to-air heat pump delivers consistent comfort, lower running costs and a longer operational lifespan.
At D-Mec Services, we have years of experience in heat pump servicing, maintenance and repairs across Bedfordshire and beyond and we’re here to help you keep your system running efficiently and cost-effectively throughout the year.
This guide outlines the key steps to protect your investment and ensure your air-to-air heat pump continues to operate at its best in every season.
Why does Air-to-Air Heat Pump Maintenance Matter?
As outlined in our ‘5 Benefits of Heat Pumps’ article, air-to-air systems generally require less maintenance than gas boilers because they work at lower temperatures and have fewer moving parts. However, because they operate more frequently, even small issues, such as restricted airflow or dirty filters, can reduce efficiency and increase running costs. Regular maintenance helps prevent faults, protect performance and ensure the system runs smoothly all year round.
Clean or Replace Indoor Unit Filters Regularly
Your heat pump’s indoor unit relies on clean filters to keep air flowing properly. Dust, pet hair and dirt can build up quickly, especially during busy seasons.
At D-Mec Services, we recommend cleaning your filters every 8-12 weeks. Blocked filters make the system work harder, reduce efficiency and can affect your indoor air quality.
Keep the Outdoor Unit Clear
The outdoor unit needs plenty of clear space to work efficiently. Leaves, branches and debris can collect around it, especially in autumn and winter.
- Keep the area around the unit clear
- Gently remove any dirt or debris from the grille
- If the unit becomes covered in frost or ice and doesn’t defrost itself, it may be a sign of a fault
If you’re unsure, our friendly engineers are always happy to advise.
Clean the Indoor Unit Coils
Air-to-air heat pumps rely entirely on airflow to heat and cool your space. Dust on the indoor coils or fins can reduce heat transfer and cause performance issues.
- Light cleaning can be done at home
- Deep coil cleaning should be left to a qualified engineer as the fins are delicate
Check for Unusual Noises or Reduced Airflow
If you notice:
- Rattling or buzzing
- Weak airflow
- Uneven temperatures
- Higher-than-normal energy bills
…it could mean your heat pump needs attention. Early checks can help prevent costly repairs later.
Inspect the Condensate Drain
In cooling mode, your heat pump produces condensation. Make sure the condensate drain and pipe are clear to avoid leaks, smells or mould growth.
If you ever notice water where it shouldn’t be, stop using the system and call a technician.
Schedule a Professional Service with D-Mec Services
Even if everything seems fine, an annual service is essential. A qualified engineer will:
- Check refrigerant levels
- Clean internal components
- Test electrical connections
- Make sure the system is running safely and efficiently
Regular servicing helps extend the life of your heat pump and reduces the risk of breakdowns, especially during peak heating and cooling seasons.
You can manage simple tasks like filter cleaning yourself, but for full system checks and long-term reliability, we’re here to help. Contact D-Mec Services today to arrange a professional heat pump service and keep your system running at its best all year round.