Heat Pump Maintenance for Optimal Performance
- Geraldine C.
- Aug 20
- 5 min read
Editor's Note: This article was initially published on September 3, 2024 and has been updated in August 20, 2025. The content has been edited for clarity, flow, and to provide the most current and relevant information.
Ensuring your heat pump is well-maintained is essential for comfort and energy efficiency, whether you're battling chilly winters or enjoying cool, dry air on a hot summer's day. For years, OneAir has installed, serviced, and repaired thousands of heat pumps, providing a better indoor climate and improved air quality for our customers. This comprehensive guide draws on the wealth of experience we've gained to outline the essential steps for maintaining your heat pump for optimal performance, ensuring it runs efficiently and lasts longer.
Why is Regular Heat Pump Maintenance Important?
Regular heat pump maintenance is crucial for performance and longevity. You can perform simple DIY tasks like cleaning filters and the outdoor unit, but professional service is vital for checking refrigerant levels and comprehensive system inspections. Regular maintenance improves energy efficiency, reduces the risk of breakdowns, and extends the life of your unit.
The Ultimate DIY Heat Pump Maintenance Checklist for Homeowners
While some maintenance tasks are best left to professionals, you can take several easy steps to keep your heat pump in top condition and save on energy bills.
Check and Replace Air Filters
Regularly checking and replacing your air filters is one of the most critical maintenance tasks you can perform. Dirty or clogged filters restrict airflow, forcing your heat pump to work harder, which significantly increases energy consumption and can damage the unit over time.
Frequency: Every 3–6 months, or more often if you have pets or live in a dusty environment.
Why it's important: Clean filters improve airflow, maintain efficiency, and protect the system from damage.
How to do it:
Locate the air filters, typically found under the covers of the indoor high-wall unit.
Gently remove and inspect the filters for damage.
If they are dirty, clean them according to the manufacturer’s instructions, usually by vacuuming or washing them. If they are cracked or broken, they need to be replaced.
Clean the Outdoor Unit
The outdoor unit needs unobstructed airflow to function correctly. Ensure the area around the unit is clear of long grass, leaves, branches, and other debris. Trimming nearby vegetation is a great way to prevent blockages.
Frequency: At least twice a year, before winter and summer.
Why it's important: Debris can hinder performance and cause damage.
How to do it:
Turn off the power to the unit at the isolator switch.
Remove any leaves, twigs, or debris from around the unit.
Gently clean the coils with a garden hose, avoiding high pressure.
Clear any obstructions from the air intake and outlet vents.
Inspect the Drain Pan
The condensate drain can become clogged with dirt, algae, or debris, which can lead to water leaks and increased humidity. Checking and cleaning the drain pan can prevent costly water damage.
Frequency: Once a year, before summer.
Why it's important: A clogged drain can cause water leaks and damage.
How to do it:
Locate the drain pan, usually inside the indoor unit.
Check for blockages or standing water.
Pour fresh water through the system to ensure it drains properly outside.
Seasonal Maintenance for Heat Pumps
Seasonal maintenance ensures your system is ready for the changing weather and operates efficiently year-round.
Pre-Winter Maintenance
Before the cold weather sets in, perform a thorough inspection of your heat pump. Clean the filters, check the outdoor unit, and ensure the thermostat is working correctly. Scheduling a professional check-up before winter can help you avoid major issues during the coldest months.
Pre-Summer Maintenance
As the weather warms up, switch your heat pump to cooling mode. Before summer officially arrives, clean the coils, check the refrigerant levels, and ensure the condensate drain is clear. This will help ensure your heat pump operates efficiently during the hotter months.
The Importance of Professional Maintenance
While DIY maintenance is essential, scheduling regular professional service is equally important for more in-depth inspections and repairs. A certified HVAC technician can perform a comprehensive check and spot potential problems before they become expensive repairs.
What to Expect from a Professional Service:
Comprehensive System Inspection: A technician will thoroughly inspect your heat pump, checking for wear and tear, leaks, worn insulation, and insect intrusion. They will also test the electrical components and overall functionality.
Cleaning and Lubricating Components: Professionals have the right tools to clean and lubricate hard-to-reach components like fan motors, bearings, and belts, ensuring all parts operate smoothly.
Checking and Recharging Refrigerant: Low refrigerant levels can reduce efficiency and damage the compressor. A technician will check and recharge the refrigerant if necessary.
Performance Testing: After maintenance, the technician will test the system to ensure it operates correctly, checking for issues like uneven heating or unusual noises.
Optimising Energy Efficiency and Performance
Heat pump maintenance is not just about keeping it running; it’s about optimising its energy efficiency.
Energy-Saving Tips:
Set the Thermostat Wisely: Set your thermostat to a comfortable temperature (around 18-22°C) while you're home. Avoid setting extreme temperatures, as this won't make the system heat or cool your home faster.
Use Dehumidify Mode: During summer, using the dehumidify setting can improve comfort with less energy than the full cooling mode.
Insulate Your Home: Proper insulation helps maintain a consistent indoor temperature, reducing the strain on your heat pump.
Address Draughts: Seal air leaks around doors and windows to prevent conditioned air from escaping. A balanced ventilation system with a heat exchanger is the best way to ensure proper air exchange without losing energy.
Utilise Zoning: If your ducted system has zoning capabilities, use them to heat or cool only the rooms you are using, which significantly reduces energy consumption.
For expert heat pump maintenance and service, contact a certified HVAC technician. Taking care of your heat pump is a smart investment that ensures your home stays comfortable and your energy bills stay low.
Ready to Optimise Your Heat Pump's Performance?
Regular maintenance is crucial for keeping your heat pump running efficiently. By following a routine maintenance schedule and scheduling professional inspections, you can extend the life of your unit and ensure it keeps your home comfortable year-round. For expert maintenance by a certified HVAC technician, call us at 0800-ONEAIR.
Frequently Asked Questions
1. How often should I get my heat pump professionally serviced? It's recommended to have your heat pump professionally serviced at least once a year. This annual check-up helps ensure your system is running efficiently, identifies potential issues early, and extends the life of your unit.
2. Can a dirty air filter really affect my energy bill? Yes, a dirty air filter can significantly impact your energy bill. It restricts airflow, forcing the heat pump to work harder and use more energy to heat or cool your home. Regular filter changes can improve efficiency and lower your bills.
3. What are the signs that my heat pump needs professional attention? You should call a professional if your heat pump isn't heating or cooling effectively, you hear unusual noises, or there's a noticeable increase in your energy bills. Other signs include frequent on-and-off cycling, ice on the outdoor unit, or water leaks from the indoor unit.
4. How can I improve my heat pump's energy efficiency? You can improve efficiency by regularly cleaning filters, sealing draughts, and setting your thermostat to an optimal temperature (around 18-22°C). Using dehumidify mode in summer and ensuring your home is well-insulated can also help.
5. Is it worth getting a heat pump maintenance plan? Yes, a maintenance plan can be a great investment. It provides peace of mind with regular professional tune-ups, extends the life of your equipment, and ensures your system runs at peak efficiency, which can save you money on energy bills and prevent costly unexpected repairs.
