Answer first
Keep the outdoor unit clear of leaves, snow and stored items; watch the controller for persistent faults; check only the user-accessible pressure or filters described in the manual; and arrange professional service at the manufacturer’s interval.
Do not remove covers, handle refrigerant, alter safety devices or repeatedly reset a fault. Record energy use and behaviour so gradual problems are found before the coldest week.
Outdoor inlets and outlets must remain unobstructed
View sourceEnergy Saving Trust current typical service-cost guide
View sourceService timing and evidence should follow the product warranty terms
View sourceArrange the right care for your heat pump
Share the make, model, postcode and what the system is doing. FLO can route the enquiry to the right service, diagnostic or replacement conversation.
Safe checks the household can make
Look for blocked airflow, unusual debris, persistent ice, visible leaks, repeated low-pressure warnings and changes in noise. Check that condensate can drain and that nobody has built a store or fence too close to the unit.
Use the controller and manual to review fault history and normal settings. Photograph the display before changing a schedule or heating curve so the previous state can be restored.
Tasks for a competent service visit
The service follows manufacturer instructions and may cover accessible electrical, refrigerant and hydraulic observations, strainers or filters, system pressure, controls, sensors, hot water, condensate and operating temperatures.
Only appropriately qualified people should open electrical or refrigerant systems. A service report should distinguish observations, completed maintenance and recommended repair.
Monitor performance between visits
Compare monthly electricity with weather and room temperatures rather than one bill in isolation. An unexplained rise can come from controls, immersion use, flow restriction, a fault or a household change.
Keep commissioning, warranty and service records together. Note fault codes, dates and whether the problem affected heating, hot water or both.
Act before a small issue becomes a winter failure
Book a diagnostic visit for repeated faults, pressure loss, water leakage, abnormal grinding or electrical smells, damaged cabling, persistent icing or a sudden loss of heat.
A routine service appointment is not an emergency repair slot. Describe symptoms honestly when booking so the right skills and likely parts can be planned.
What to read next
Related answers and services
Questions people also ask
Can I wash the outdoor coil?+
Follow the exact manufacturer instructions; do not use pressure washers or tools that can damage fins or electrical parts.
Should I clear snow from the unit?+
Keep manufacturer clearances and airflow open, but do not strike ice or interfere during a defrost cycle.
Is maintenance required for warranty?+
Many warranties require regular service and records; check the exact product and installer terms.
Evidence used for this answer
Figures are explained in context and links go to the independent source. Prices, tariffs, scheme rules and standards can change, so check the source again before making a financial or technical decision.
- MCS domestic heat-pump guideConsumer guidance covering design, installation, controls, handover and maintenance.
- Energy Saving Trust: heat-pump questions answeredIndependent answers on servicing, maintenance and common household heat-pump decisions, including a current typical service-cost guide.
- Energy Saving Trust: the most efficient way to run a heat pumpGuidance on weather compensation, longer run periods, setbacks, radiators, hot water and smart energy use.