How long does a heat pump last?

Key takeaways

• Heat pumps typically last for about 15-20 years. More modern systems with proper upkeep can last even longer.
• Quality of installation, regular upkeep, the model of the heat pump and its usage all impacts its lifespan.
• Smart maintenance practices and choosing the right type of heat pump can help extend its lifespan and keep energy costs low.

When it comes to investing in a heat pump, a key question that’s often asked is: "How long will it last?” Typically, a high-quality heat pump can last between 15 to 20 years, though with recent tech advancements, some can keep running up to 25 years or longer.

The type of heat pump does have an impact on longevity. Ground source heat pumps, for example, usually last longer than air source and air to water heat pumps. However, ground source heat pump installations are more costly and complex than their air source counterparts.

There are also a range of other factors that impact how long a heat pump lasts. These include installation quality, the heat pump model, maintenance and general upkeep, environmental conditions and overall usage. Let’s get into them.

Factors affecting lifespan

1. Installation quality

It might seem obvious, but the way your heat pump is installed affects its performance and overall durability. Just like any central heating system, improper installation can lead to reduced efficiency and an increased risk of early breakdowns.

That's why hiring reputable and accredited HVAC installers, like our Aira Academy-trained Clean Energy Technicians, is vital. They tailor each heat pump installation to the household's unique heating and hot water needs, ensuring maximum efficiency and reliability while reducing the likelihood of breakdowns.

2. Brand and model

The quality of the heat pump also plays a big role in longevity. Newer models, manufactured within the last 5-8 years, are designed with advanced technologies that enhance their lifespan. The Aira Heat Pump, for example, is designed to be future-proof and is independently tested and certified to meet the top industry standards.

3. Maintenance

Routine maintenance is important for a long-lasting heat pump. Simple at-home checks and scheduling annual maintenance can help prevent expensive repairs.

If you're a heat pump owner, you can contribute by performing at-home maintenance tasks, such as cleaning your outdoor unit, checking air filters, ensuring unobstructed airflow, bleeding your radiators and checking your system's pressure. These practices help prevent expensive repairs and maintain efficiency over time.

4. Environmental conditions

Climate and weather can affect how your heat pump performs. Air source heat pumps work best in milder climates but are built to work in colder weather too. Just ask Sweden, where heat pumps are the norm – as are sub-zero winters!

For some heat pumps, cold weather may cause ice to build up on the outdoor unit, which may need clearing from time-to-time. However, some modern models, such as the Aira Heat Pump, have their own in-built de-icing systems. Learn more about how a heat pump works in winter.

Coastal areas, where salt levels lead to corrosion, also require more diligent maintenance to offset wear.

Tips to maximise your heat pump's lifespan

Want your heat pump to last longer? Follow these strategies to keep it performing at maximum efficiency and lowering your energy bills for years to come:

• Professional checks: Contact your provider to determine how often your heat pump needs general maintenance to inspect components like electrical connections, fan blades and refrigerant levels. The Aira Heat Pump is intelligently designed to notify you of any issues, allowing our technicians to either rectify them remotely or provide a service visit to resolve any issues.
• Check your filter: Check and clean your air filter once a year. If you feel your heat pump is running inefficiently, talk to your provider as you may need a replacement.
• Clear the outdoor unit: Keep the outdoor unit clear of debris and ice in cold weather.
• Thermostat control: Modern heat pumps come with a programmable thermostat to better regulate temperature and avoid overworking the system. If you don't have one, consider contacting your local provider to have one installed.

Signs your heat pump needs replacing

Even with great maintenance, every system eventually needs replacing. Here’s how to know when:

• Frequent repairs: If you're paying for maintenance, constant breakdowns can add up, often making a new system more cost-effective.
• Higher energy bills: A sudden rise in your energy bills is a common sign that the heat pump is losing efficiency.
• Inconsistent temperatures: If some rooms are too warm and others too cool, it could be a sign the system is struggling.
• Strange noises: Grinding or rattling sounds often mean mechanical issues that are usually best addressed with a replacement.