After PIR insulation: review how the heating is controlled

Completion of insulation work is a useful point to discuss heating operation. That discussion needs the actual retrofit scope and occupancy pattern, not simply “the house is insulated”.

Tell the installer which areas were insulated, which windows changed and whether room use differs. Separate completed work from planned work. Settings for today’s house need not suit a future phase. Work records help avoid decisions based on assumptions.

If replacing the heat source, ask for selection based on the renovated building. The old unit’s rating does not establish the updated requirement. Do not choose a boiler or heat pump solely from past fuel use. Assessment must suit the building and how heat is delivered.

Distinguish time schedules, room temperature targets and heating-circuit parameters. They concern different aspects of operation even when displayed on similar screens. Use the manual to establish which settings belong to the user. Do not copy values from a video of another device or system type.

Establish which room or zone each controller represents. A relocated sensor, covered valve or changed room use can complicate interpretation. Report these circumstances rather than immediately attributing them to insulation failure. Device locations and interactions should follow the system’s requirements.

Compare programmed heating times with actual occupancy. An old schedule may reflect different working hours or loft use. Where the manual permits schedule changes, retain the previous programme and note the new one. Consider people who stay at home, not only the routine of whoever operates the controller.

Do not introduce a deep temperature setback simply because PIR was installed. Response depends on the building and heating type, and comfort can take time to recover. A routine suitable for one system may not suit another. Seek advice on operating mode where the manual does not explain the change’s effect.

Changes to heating curves, flow rates or equipment parameters may require installer assessment. Do not open equipment or alter safeguards in an attempt to save energy. Keep space heating separate from domestic hot-water preparation. Safety and hygiene settings are not substitutes for adjusting room comfort.

If one part of the house stays cool while another overheats, describe both locations. Increasing a common setpoint may not resolve uneven operation. A professional review should consider the distribution system and alterations. Do not assume that buying another controller will necessarily solve it.

For an agreed user adjustment, note the date, weather, occupancy and observed effect. Avoid changing many functions simultaneously, which makes the cause harder to identify. There is no single observation period for every system; agree it using the instructions and the commissioning person’s advice.

Retain the necessary air exchange after insulation. Switching ventilation off is not a way to improve heating-control results. Where the systems interact or renovation altered airtightness, include that information in the review. The objective is a properly functioning home, not the lowest reading achieved at the expense of other needs.

Ask for a clear record of the agreed operation: permitted user adjustments, schedule meanings and situations requiring service. Keep the correct equipment manual. A later renovation or occupancy change can then start from documented settings instead of reconstructing them from memory.