How long does an Air Source Heat Pump last?

An Air Source Heat Pump (ASHP) typically lasts 15 to 20 years with proper maintenance. This lifespan is comparable to other types of heating systems, such as boilers. Several factors influence the longevity of an ASHP:

1. Quality of the Unit

• Higher-quality models from reputable manufacturers tend to last longer due to better build quality, durability of components, and advanced design features. These units may also include features like corrosion-resistant materials and efficient compressors that contribute to a longer lifespan.

2. Climate and Usage

• Climate has a significant impact on ASHP lifespan. In milder climates, where extreme temperatures are less common, ASHPs experience less strain and may last closer to 20 years. In colder climates where the unit must work harder, or areas with high humidity and salty air (like coastal areas), wear and tear may occur faster.

• Additionally, ASHPs used year-round for both heating and cooling may experience a shorter lifespan than those used seasonally, though modern variable-speed systems are designed for continuous use.

3. Installation Quality

• Professional, high-quality installation ensures the ASHP operates efficiently and avoids common issues like refrigerant leaks or airflow blockages that could shorten its lifespan. A well-installed system minimises strain on the compressor and other components, extending the overall life of the unit.

4. Maintenance and Servicing

• Routine maintenance is essential for maximizing an ASHP’s lifespan. Regularly cleaning the air filters, keeping the outdoor unit free of debris, and scheduling annual professional servicing help prevent issues that could lead to early wear or reduced efficiency.

• During a professional service, a technician will check refrigerant levels, test the compressor, and inspect for any signs of wear or potential malfunctions, addressing these proactively.

5. Proper Sizing

• Installing a heat pump that is properly sized for the space it’s heating or cooling is also important. An undersized unit will be overworked, leading to more wear, while an oversized unit may cycle on and off frequently, putting extra strain on the compressor.

With regular maintenance, a high-quality ASHP installed in a well-insulated home can reliably provide heating and cooling for 15 to 20 years. Proper care and periodic check-ups are key to maximizing its lifespan and keeping it running efficiently.

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