Winter temperatures in England typically range from 2°C to 8°C, meaning your heat pump winter maintenance routine is essential to keep your home warm and energy bills low. A well-maintained heat pump operates efficiently, providing reliable heating even in the colder months. Whether you’re new to heat pumps or have had one for years, these simple steps will help you prepare for winter.
Winter Heat Pump Maintenance Checklist
| Task | Why It Matters | How Often? |
| Clear debris around the unit | Improves airflow and efficiency | Monthly |
| Clean or replace filters | Ensures good air circulation and performance | Every 1-3 months |
| Adjust thermostat settings | Helps maintain comfortable temperatures efficiently | As needed |
| Check and seal ducts | Prevents heat loss and improves efficiency | Annually |
| Book a professional service | Identifies potential issues early | Annually |
1. Keep the Area Around Your Heat Pump Clear
Fallen leaves, dirt, and other debris can block airflow, making your heat pump work harder. Ensure at least a 60cm clearance around the outdoor unit to maintain efficiency.
2. Clean or Replace the Filters
Dirty filters restrict airflow, reducing your heat pump’s efficiency. Check them every 1–3 months and replace them if they look clogged or discoloured.
3. Adjust Your Thermostat Settings
For the best balance between comfort and efficiency:
- Set your thermostat to 18-21°C while at home.
- Lower the temperature slightly at night or when you’re out.
- If you have a smart thermostat, program schedules to save energy.
4. Check and Seal Ducts
If your home has ducted heating, inspect exposed ductwork for cracks or leaks. Use duct tape or mastic sealant to prevent warm air from escaping.
5. Book a Professional Service
A technician can:
- Check refrigerant levels
- Inspect electrical connections
- Test components for efficiency
- Identify early signs of wear
Annual servicing ensures peak performance throughout winter.
6. Switch to Heating Mode
If you used your heat pump for cooling during summer, make sure it’s switched to heating mode. This avoids inefficient operation and ensures the system is ready for colder temperatures.
7. Listen for Strange Noises
Unusual sounds can indicate issues:
- Grinding or squealing – Possible motor or belt problem
- Clicking or buzzing – Electrical issue
- Rattling – Loose components or debris inside the unit
If you notice anything unusual, contact a qualified heat pump technician.
8. Improve Home Insulation
Issue | Possible Cause | Solution |
Heat pump not producing heat | Incorrect settings, blocked filters, or refrigerant issues | Check thermostat, clean filters, call a technician if needed |
Outdoor unit freezing up | Normal in cold weather but excessive ice can indicate a problem | Defrost cycle should clear it—if not, book a service |
Weak airflow | Clogged filters or blocked vents | Clean or replace filters, remove obstructions |
Sudden energy bill increase | Heat pump working harder due to issues | Check for leaks, service the unit |
9. Improve Home Insulation
A well-insulated home helps maintain steady temperatures. Check for draughts around doors and windows and use draught excluders or insulation tape to reduce heat loss.
Why Regular Maintenance Matters
- Lower energy bills – A well-maintained heat pump runs more efficiently
- Longer system lifespan – Prevents costly repairs and extends unit life
- Consistent heating – Avoids breakdowns during cold spells.
By following these steps, you’ll keep your heat pump running efficiently throughout the winter, ensuring warmth and comfort in your home.
For more energy-saving tips and maintenance advice, check out our other blogs.
