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Aerothermal maintenance: keys to an efficient and long-lasting system

27/08/2025

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If you’ve made it this far, you’re probably in one of these situations:

  • You are thinking of replacing your gas or oil boiler with aerothermal energy.
  • You are going to renovate your home and are looking for an efficient and durable system.
  • You are building a new house and want to invest in renewable energies.
  • Or you already have aerothermics installed and want to know what maintenance is required.

We tell you how to take care of your fan heater, what the regulations say, what inspections are recommended and how preventive maintenance ensures efficiency, safety and a long service life.

Why is maintenance of the fan heater important?

A well-maintained aerothermal system offers:

  • Maximum energy efficiency: less consumption and more savings.
  • Increased safety: electrical and hydraulic risks are minimized.
  • Long service life: periodic overhauls prevent serious breakdowns.
  • Regulatory compliance: the Regulation of Thermal Installations in Buildings (RITE) requires maintaining the installation in optimal conditions.

Regulations: as per RITE

  • Owner’s responsibility: to ensure that the installation operates safely and efficiently.
  • Periodic inspections: although the exact frequency depends on the manufacturer, it is recommended at least once a year.
  • Maintenance company: mandatory for installations over 5 kW (practically all domestic installations).

Types of maintenance in aerothermics

Basic maintenance (can be done by the user)

  • Cleaning of air filters.
  • Visual inspection of indoor and outdoor units (obstructions, dirt, ventilation).
  • Check that the system responds correctly in heating and cooling.

Professional maintenance (performed by technicians)

  • Revision of hydraulic and electrical circuits.
  • Checking and cleaning of DHW tanks.
  • Verification of pressures and refrigerant levels.
  • Control software update (if the equipment allows it).
  • Performance monitoring to prevent future incidents.

Preventive vs. corrective maintenance

  • Preventive: scheduled inspections to avoid breakdowns and optimize consumption.
  • Corrective: interventions when there is already a fault.

The ideal is prevention: a maintenance plan reduces risks, ensures comfort and avoids unforeseen expenses in the long term.

Frequently asked questions about air heating maintenance

Is maintenance of the fan heater mandatory?

Yes, the RITE establishes that the systems must be maintained in optimal conditions. In installations of more than 5 kW, this must be done by an authorized maintenance company.

What happens if I don’t do the maintenance?

Efficiency decreases, power consumption increases, the likelihood of breakdowns increases and equipment life is reduced.

Can I do the maintenance myself?

Only basic tasks (cleaning filters, checking for blockages). Complete overhauls should be done by qualified technicians.

Does aerothermal energy require more maintenance than other systems?

No. In fact, it requires less servicing than a gas boiler, since there is no combustion or fumes.

Fotovol Service: professional installation and maintenance

At Fotovol we accompany you throughout the life cycle of your aerothermal installation:

  • Design and legalization of the installation.
  • Processing of grants.
  • Certified installation.
  • Professional preventive and corrective maintenance, with remote monitoring and specialized technical support.

Do you want your aerothermal system to always work with maximum efficiency?
Request your free study with Fotovol and we will advise you on the most appropriate installation and maintenance for your aerothermal equipment.

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