# How Often Should a Heat Pump Be Serviced? A Plain Guide to Air Source Heat Pump Maintenance

> How often should a heat pump be serviced? Learn what an annual check covers and what to watch for, from our Heat Pump Servicing team in Walsall.

URL: https://ecoheatpumpswalsall.online/heat-pump-servicing/heat-pump-servicing-walsall/how-often-should-a-heat-pump-be-serviced/

A heat pump has no flame and far fewer moving parts than a boiler, so it is easy to assume it can be left alone. It can't, quite. [Eco Air Source Heat Pump Installer](https://ecoheatpumpswalsall.online/) is based in Walsall, and the question we hear most after installation is how often heat pump servicing is actually needed. The short answer is once a year. This guide explains why, what the visit covers, and what you can safely check yourself between appointments.

## The Short Answer: Once a Year

Have your heat pump serviced once every 12 months. This is the standard recommendation from manufacturers, and many warranties are only valid if you can show an annual service record. Check your warranty paperwork, because the exact wording varies from one brand to another.

An annual visit matters because a heat pump works hard all year, not just in winter. It also heats your hot water, so it rarely switches off for long. Small problems such as a dirty filter, a slow leak or a blocked condensate drain tend to creep up quietly. You may not notice anything until bills rise or the house feels cooler than it should.

Heat pumps are also efficient by design. The Energy Saving Trust says they are more than three times more efficient than a gas or oil boiler (Energy Saving Trust, Air source heat pumps, updated 23 Sept 2026). That efficiency depends on the system running as it was set up, and a yearly check is how you keep it that way.

## What Happens During a Service Visit

A proper service is a methodical check of the whole system, not a quick look at the outdoor unit. Typically an engineer will:

- Clean the outdoor unit and clear leaves, debris and anything blocking airflow around the fan and coil
- Check the refrigerant circuit for signs of leaks or damage
- Inspect electrical connections and controls
- Check water pressure, filters and the heating circuit, including any magnetic filter
- Test the flow temperature and compare it with the settings used at commissioning
- Look at the hot water cylinder, immersion heater and any safety valves
- Check the condensate drain is running clear

Ask for a written record afterwards. It helps with warranty claims, and it is useful if you sell the house or let it out. If you want more detail on what we cover, our [heat pump servicing page for Walsall](https://ecoheatpumpswalsall.online/heat-pump-servicing/heat-pump-servicing-walsall/) sets it out.

## What You Can Check Yourself Between Services

Some upkeep is perfectly reasonable for a homeowner, as long as you keep it simple and leave anything electrical or refrigerant-related to a qualified engineer.

- **Keep the outdoor unit clear.** Trim back plants and sweep away leaves so air moves freely around it. Don't pile anything against it.
- **Check for ice in cold weather.** A little frost is normal, and the unit runs a defrost cycle. If it stays encased in ice, call for advice.
- **Watch the system pressure.** If your heating circuit has a pressure gauge, check it now and then against the range in your manual.
- **Listen for changes.** A new rattle, hum or vibration is worth reporting.
- **Keep an eye on bills.** Electricity use that climbs without a change in routine can point to a fault.

Never remove panels on the outdoor unit or touch the refrigerant pipework yourself.

## When to Book Sooner Than Your Annual Visit

Don't wait for the 12 months to pass if you notice any of these: radiators staying lukewarm, hot water running out faster than usual, error codes on the display, water pooling around the unit, or unusual noise. The same applies after a very cold spell or a storm that may have shaken the outdoor unit.

Running costs are also worth understanding. On standard tariffs electricity is nearly four times more expensive than gas, so a heat pump can cost slightly more to run than a new gas or oil boiler, while a heat pump time-of-use tariff can bring running costs below a gas boiler (Energy Saving Trust, Air source heat pumps, updated 23 Sept 2026). With costs that sensitive, a system quietly working harder than it should is worth catching early.

If you installed through the Boiler Upgrade Scheme, remember that the grant comes through our MCS-certified partner, who quotes, installs and applies on your behalf. Servicing is a separate matter, so keep your handover paperwork safe and ask about warranty conditions.

## Key Takeaways

- Service your heat pump once every 12 months, and check your warranty wording.
- A proper visit covers the outdoor unit, refrigerant circuit, electrics, water circuit and cylinder.
- Between services, keep the unit clear, watch for ice and noise, and leave technical work to an engineer.
- Book sooner if heating, hot water or bills change unexpectedly.
- Keep a written service record for warranty and resale purposes.

## Talk to a Local Engineer

If your heat pump is due a check, or you are unsure when it was last looked at, call us on [01922 302461](tel:+441922302461) or request a free survey. We are open 7 days, 9am to 7pm, and you are welcome to visit us in Walsall, WS1. See our [heat pump servicing](https://ecoheatpumpswalsall.online/heat-pump-servicing/heat-pump-servicing-walsall/) page for more detail.

## Frequently asked questions

### Is an annual heat pump service really necessary?

Yes, for most homes. Manufacturers generally recommend a service every 12 months, and warranties often depend on it. Regular checks keep the system running efficiently and pick up small faults before they become repairs. Your installation paperwork will confirm the requirements for your particular model.

### Can I service my own heat pump?

You can clear leaves and debris from around the outdoor unit and check your system pressure, but the service itself should be done by a qualified engineer. It involves electrical checks and the refrigerant circuit, which are not safe or legal for an untrained person to work on.

### Does a heat pump need servicing more often in winter?

Not as a rule. One annual service is the standard, and many people book it in early autumn so the system is checked before the colder months. If you spot ice build-up, odd noises or poor heating during winter, call sooner rather than waiting.

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Eco Air Source Heat Pump Installer · 01922 302461 (+441922302461) · Get Free Quote: https://ecoheatpumpswalsall.online/contact/