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Advice · Heat pumps

Our 10 commandments of heat pump usage

Maximise efficiency. Increase comfort. Follow your own system's settings and instructions agreed at handover.

By Kirk Ferguson, Director and Lead EngineerPublished 3 minute read

A Vaillant sensoCOMFORT thermostat on a wall, showing the room and outdoor temperatures
A Vaillant sensoCOMFORT control, from one of our installs

Our homeowner system guide, from our handover pack. Follow your own system's settings and instructions agreed at handover.

The 10 commandments

  1. Heat gently and steadily

    Follow the agreed schedule. Longer, gentler heating periods usually suit heat pumps better than short bursts. The compressor need not run continuously.

  2. Avoid big temperature drops

    Use the agreed setback rather than letting the home become cold. Large drops can mean a slow recovery, especially with underfloor heating.

  3. Adjust a little, then wait

    Choose a comfortable temperature and allow the home time to respond. Avoid repeatedly turning the thermostat up and down.

  4. Let weather compensation work

    Where enabled, it adjusts heating water temperature with the weather. Ask us before changing the heating curve or installer settings.

  5. Judge the room, not the radiator

    Radiators may feel gently warm rather than piping hot. If the rooms are comfortable, that can be normal, efficient operation.

  6. Keep the water flowing

    Leave radiator valves, manifold flows and balancing settings as demonstrated. Use bedroom temperature limiters only as agreed.

  7. Use your hot-water programme

    Follow the agreed cylinder settings and schedule. Avoid unnecessary boosts and leave the agreed hot-water hygiene programme in place.

  8. Leave power on and airflow clear

    During normal operation, use the controls rather than the electrical isolator. Keep the outdoor unit and its airflow clear.

  9. Know normal winter behaviour

    Brief defrost cycles, water beneath the outdoor unit and clouds of water vapour can be normal. Report persistent ice or repeated faults.

  10. Care for your system

    Check pressure against your handover record. Report repeated pressure loss or poor comfort. Arrange servicing to the manufacturer's requirements. Heat pump servicing.

Ask us before changing commissioned settings.

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