Heat Pump Annual Service: What It Includes, What It Costs & When the First Service Is Due (2026)
Updated: 2026-10-01 · ~2 min read
Is annual service mandatory?
- In most cases: no. Manufacturer warranties usually do not require periodic service (especially on newer models) — but some models/installer contracts do. Read your warranty and the installation agreement.
- Even when it's optional: one inspection per heating season is good hygiene — it's cheaper to catch a small issue in May than to diagnose a fault mid-January with the house cold.
What a typical annual inspection covers
| Item | What the tech does | Why it matters |
|---|---|---|
| Filters (magnetic on return, mesh) | clean/replace | clogged filter = flow alarm + circulation pump overload — a very common recurring fault |
| Water-side pressure | top up to nominal, check expansion vessel behavior | pressure drop = micro-leak or air (see pressure drop guide) |
| Refrigerant circuit (F-gas) | condensing/evaporating pressures, leak test with detector | refrigerant leak = COP loss + top-up cost; requires F-gas certification |
| Fans / outdoor coil (evaporator in heating mode) | clean, check insect guard, fan operation | dirty coil = airflow/pressure fault + COP drop |
| Circulation pump & electrical | connections, capacitors, control logic | failed circulation pump is a frequent "won't start" cause |
| Sensors (outdoor, return, flow) | verify readings vs. real temperatures | sensor drift = wrong controller decisions (defrost timing, output) |
When is the first service due?
- New system: after the first full heating season (spring) — by then you can see whether the loop was bled properly, pressure stayed stable, and real COP matches the declared range.
- Warranty-required service: usually in the first 1–2 years, per the warranty/installation contract.
What it costs (indicative, Central Europe, 2026)
| Item | Indicative range |
|---|---|
| Visit + inspection (incl. water top-up/bleeding) | €150–400 labor + materials if needed |
| Filters (magnetic, mesh) set | €15–80 |
| Refrigerant top-up after a leak — separate item | €150–400+ depending on charge size and labor; F-gas-certified work only |
Prepare before the visit (makes it shorter and cheaper)
- Error history from the controller: code(s) + when they appeared.
- Access to the unit (is it in a recessed niche that needs disassembly? outdoor reachability in winter).
- Known nominal pressure value of your system (manual/plate).
Affiliate slot: service marketplaces / parts — to be wired after publisher registration.
Sources
- Typical ASHP annual inspection scope (manufacturer service documentation); as of October 1, 2026.
- F-gas Regulation (EU) 2024/573 — handling and certification; as of October 1, 2026.