Keep your air source or ground source heat pump efficent.

Heat pumps offer an energy-efficient way to heat and cool your home, but their performance depends on proper care and maintenance. Whether you have an air source heat pump (ASHP) or a ground source heat pump (GSHP), keeping it running efficiently saves you money and reduces environmental impact. This post explains practical steps to maintain your heat pump’s efficiency throughout the year.

Understand How Your Heat Pump Works

Heat pumps transfer heat rather than generate it by burning fuel. An air source heat pump extracts heat from the outside air, while a ground source heat pump uses the stable temperature of the ground. Both systems rely on refrigerants and compressors to move heat inside or outside your home.

Knowing this helps you appreciate why regular maintenance matters. Dirt, debris, or mechanical wear can reduce heat transfer efficiency, forcing the system to work harder and use more energy.

Regular Cleaning and Inspection

Keeping your heat pump clean is one of the simplest ways to maintain efficiency.

Annual Heat Pump Servicing

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• Outdoor Unit Cleaning: For air source heat pumps, clear leaves, dirt, and snow from the outdoor unit. Blockages reduce airflow and heat exchange. Use a soft brush or hose to gently clean the fins and coils.

• Indoor Unit Care: Dust and vacuum around indoor units to prevent dust buildup on filters and coils.

• Filter Replacement: Check filters monthly during peak use seasons. Replace or clean them as recommended by the manufacturer. Clogged filters restrict airflow and reduce efficiency.

  
  

Regular inspections help catch small issues before they become costly repairs. Look for signs like unusual noises, frost buildup, or water leaks.

Optimise Thermostat Settings

Your thermostat controls how hard your heat pump works. Setting it correctly can improve comfort and efficiency.

• Avoid setting the temperature too high or too low. A difference of just 1 degree Celsius can increase energy use by up to 10%.

• Use programmable thermostats to adjust temperatures automatically when you are away or asleep.

  
  

These small adjustments reduce unnecessary energy consumption and extend the life of your heat pump.

Maintain Clear Surroundings

For air source heat pumps, the outdoor unit needs plenty of space for airflow.

• Keep at least 2 meters of clearance around the unit.

• Trim back shrubs, grass, or branches that could block airflow.

• Avoid placing objects like garden furniture or tools near the unit.

  
  

For ground source heat pumps, ensure the ground loops are not disturbed by landscaping or construction. Damage to underground pipes can reduce efficiency and require expensive repairs.

Schedule Professional Servicing

Annual professional servicing is essential for both air source and ground source heat pumps.

A qualified technician will:

• Check refrigerant levels and top up if necessary.

• Inspect electrical connections and controls.

• Test system pressure and temperature.

• Clean coils and internal components.

• Identify worn parts and recommend replacements.

  
  

Professional maintenance keeps your heat pump running smoothly and can prevent unexpected breakdowns.

Monitor Energy Use and Performance

Keep an eye on your energy bills and system performance.

• Sudden increases in energy use may indicate a problem.

• Some heat pumps come with smart controls or apps that track performance and alert you to issues.

• Record temperatures and heating times to spot inefficiencies.

  
  

Early detection of problems helps you act quickly and avoid higher costs.

Upgrade When Necessary

Heat pump technology improves over time. If your system is over 10 years old, consider upgrading to a newer, more efficient model.

Newer heat pumps use advanced compressors and refrigerants that work better in cold weather and use less electricity. Upgrading can reduce your energy bills and carbon footprint.

Tips for Ground Source Heat Pump Owners

Ground source heat pumps require special attention to the underground loop system.

• Avoid planting deep-rooted trees near the loop field.

• Do not drive heavy machinery over the loop area.

• Ensure proper drainage to prevent waterlogging around the pipes.

  
  

These steps protect the loop system and maintain heat transfer efficiency.

Tips for Air Source Heat Pump Owners

Air source heat pumps face challenges in extreme weather.

• In winter, check for ice buildup on the outdoor unit. Most systems have defrost cycles, but heavy ice may require manual removal.

• Avoid covering the outdoor unit during storms or when not in use for long periods.

• Ensure the unit is installed in a location protected from strong winds.

  
  

Proper care during harsh weather keeps your heat pump running efficiently year-round.