There is a question we hear all the time: “If the equipment is working fine, why pay for maintenance?” The answer is straightforward: because when it does break down, the cost will far exceed all the inspections you skipped.
Preventive maintenance is not an expense. It is an investment that protects your equipment, your business and your bottom line.
The real cost of a breakdown
When an HVAC unit, a cold room or an electrical switchboard fails without warning, the cost goes well beyond the repair itself. There are additional expenses that are often overlooked:
- Downtime: hours or days without production, without customer service or with uninhabitable premises.
- Emergency repairs: out-of-hours callouts, weekend work and urgent spare parts are significantly more expensive than a scheduled intervention.
- Product loss: in refrigeration installations, a breakdown can mean losing thousands of euros worth of perishable goods.
- Collateral damage: a water leak, a short circuit or excessive pressure can damage other equipment or the premises themselves.
According to industry data, the cost of an unplanned breakdown is between 3 and 9 times higher than the preventive intervention that could have avoided it.
Energy consumption: the silent expense
Poorly maintained equipment does not just break down sooner — it also consumes more energy while it is running. An HVAC system with dirty filters, low refrigerant or clogged heat exchangers can use up to 30% more energy to deliver the same performance.
That excess consumption accumulates month after month on the electricity bill without being easily noticeable. The real difference only becomes apparent when you compare consumption before and after a professional service.
The same applies to electrical installations: loose connections, phase imbalances or inadequate reactive power compensation generate energy losses that translate directly into money.
What a good maintenance plan includes
A professional preventive maintenance plan goes far beyond “having a quick look” at the equipment. It should include, at a minimum:
- Visual and functional inspection of all components.
- Cleaning of filters, heat exchangers and ductwork.
- Electrical parameter checks: consumption, insulation resistance and connection tightness.
- Pressure and temperature monitoring in refrigeration circuits.
- Safety device inspection: residual current devices, circuit breakers, pressure switches and safety valves.
- Documented records of every intervention with measurements and observations.
These records are not only useful for identifying degradation trends — they are also mandatory under regulations such as the RITE, RSIF and REBT, depending on the type of installation.
Recommended frequency
The ideal interval depends on the type of equipment and its usage, but as a general guide:
- Commercial HVAC: full inspection at least twice a year (before summer and winter).
- Industrial refrigeration: monthly or quarterly inspections depending on how critical the installation is.
- Electrical installations: annual inspection including thermographic survey.
- DHW and heating: full annual inspection covering temperatures, anodes, valves and pumps.
For critical installations such as cold rooms in the food industry or hospital HVAC systems, maintenance may be weekly or even include continuous monitoring.
Preventive versus corrective maintenance: the numbers
To put the figures in perspective:
- An annual preventive maintenance contract typically represents 2% to 5% of the equipment’s value.
- A major breakdown with downtime can cost 15% to 40% of that same value, not counting indirect losses.
The maths is clear. Preventive maintenance does not eliminate the possibility of a breakdown entirely, but it dramatically reduces the likelihood and allows problems to be detected while they are still small and inexpensive to fix.
Trust someone who knows your installations
At Acoval we offer maintenance contracts tailored to every type of installation: HVAC, industrial refrigeration, electrical systems, DHW and heating. Our technicians know your equipment, its service history and its weak points, enabling them to act with judgement and foresight.
If it has been a while since your installations were last inspected, or if you want to stop relying on emergency repairs, let us talk. A timely inspection is always cheaper than an untimely breakdown.
