The great advantage: no mandatory annual inspection
The oil boiler required an annual mandatory inspection (€200–350/year), burner cleaning and emissions check. Aerothermal, on the other hand, has no combustion, generates no toxic gases and requires no mandatory annual inspection by regulation.
Recommended maintenance calendar
| Task | Frequency | Who does it |
|---|---|---|
| Clean indoor unit filters (fan coils or splits) | Every 1–2 months | The owner |
| Visual check of outdoor unit | Every 3 months | The owner |
| Hydraulic circuit pressure check | Annually | Enclos Instal technician |
| Refrigerant fluid inspection | Every 2 years | Certified technician |
| Full preventive service | Every 3 years | Enclos Instal technician |
Official Installers in Alt Empordà
Warning signs to watch for
- The outdoor unit makes unusual noise: may indicate dirty fins or a fan problem.
- Hydraulic circuit pressure keeps dropping: may indicate a small leak in the water circuit.
- The unit shows error codes: all modern units (Daikin, Panasonic, Vaillant, De Dietrich) display error codes on screen or in the app.
Frequently asked questions
Does the manufacturer's warranty include maintenance?
The manufacturer's warranty (Daikin, Panasonic, Vaillant, De Dietrich) covers manufacturing defects, not preventive maintenance. Some brands extend the warranty up to 5 years if maintenance is carried out by an official technician.