Covering a heat pump to conceal it: Experts outline key strategies and discuss potential financial repercussions of an improper concealment job

Air source heat pumps, a popular choice for renewable heating, require careful maintenance to ensure they operate at their best. Two industry experts, John Felgate and Hamid Salimi, share their insights on the common mistakes to avoid and best practices for efficient operation.

John Felgate, the Managing Director of STIEBEL ELTRON UK and Ireland, with over 25 years of experience in building services manufacturing, warns against enclosing an air source heat pump. Such a move, he says, can negatively impact its performance due to potential re-entrainment of exhaust air, reducing efficiency.

Felgate is a recognized industry leader and has played a key role in advancing the UK's renewable heating sector. He also serves as Head of Technical at STIEBEL ELTRON UK and chairs the Electric Space and Water Heating group at BEAMA.

One common mistake experts often see is fully enclosing a heat pump. Kinking or bending the hoses at the back of the heat pump can also restrict airflow, which is crucial for the unit's efficient operation.

Hamid Salimi, the Product Manager at Daikin Residential, recommends installing the heat exchanger in a location that ensures easy access for maintenance, adequate airflow, and minimal thermal losses. Salimi holds a BSc and MSc in mechanical engineering.

It's essential to provide the heat pump with clear space around the intake and exhaust. Adding a cover, a screen, or positioning the unit must maintain open space around it so air can move freely in and out. Most quality outdoor heat pumps are already built to withstand the weather, so covering them may not be necessary.

However, if you choose to cover your air source heat pump, it must be done correctly to ensure airflow is not obstructed. Proper covers or shelters designed for HVAC equipment that allow full airflow are recommended. High-quality heat pumps have top-level corrosion protection as standard.

Avoid using solid, airtight, or heat-trapping materials, as they can cause overheating in summer and ice build-up in winter. It's also important to leave at least 30-50 cm around the sides and one meter in front of the fan for airflow. Obstructions like fences, plants, or walls too close to the heat pump can restrict airflow, leading to higher energy use and faster wear on the components.

Lastly, placing heavy items on top of the heat pump unit can dent the casing and make it harder to open for servicing. By following these expert tips, you can help ensure your air source heat pump works efficiently and lasts for years to come.

Covering a heat pump to conceal it: Experts outline key strategies and discuss potential financial repercussions of an improper concealment job