
Ariston Nuos commissioning: what it is, why it matters and how to book it for free
It is free, paid for by Ariston, and stops a breakdown caused by a poor installation from being charged to you. What we check and how to book it.
Guides to choosing, installing and maintaining your air conditioning, heat pump and hot water system in Spain, written by our technical team.

It is free, paid for by Ariston, and stops a breakdown caused by a poor installation from being charged to you. What we check and how to book it.

Commissioning and registration add a year to the warranty, and with the official service centre it goes up to 5 years, maintenance included.

The steps to connect the Nuos to the Ariston NET app and how to fix the usual problems: it does not show up in the app or registration fails.

What you will see the first time you switch it on, how we set it up and why GREEN mode at 55 °C is the one that uses least.

What the errors we see most often mean (E2, 042, F4, 032, 335, 021), which one you can check yourself and when to call a technician.

What is checked on a heat pump, how often it should be done and what happens to running costs and breakdowns if it is not maintained.

The differences between split, multi-split and ducted air conditioning: when each one makes sense, what work is involved and what to consider before deciding.

How the output of an air conditioner is worked out, how kW, BTU and frigorías compare, why square metres aren’t enough and what happens if the unit is too big or too small.

What a heat pump water heater is, how it differs from an electric water heater (termo) and what is needed to install one.

What is checked when a split or ducted air conditioner is serviced, how often it should be done and what you can do yourself between visits.

Simple, safe checks when an Ariston water heater, boiler or heat pump stops working or shows an error code.
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Tell us what you need and we’ll come back to you with a clear proposal. If something has broken down, let us know and we’ll treat it as a repair call-out. We speak English.
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Maintenance
Your system serviced from 105 € a year
And up to 15 % off: −10 % when 5 homes in your building have their maintenance with us, and a further −5 % if your property manager is a partner. If you have an Ariston NUOS, its warranty goes from 2 to 5 years.
−10 % when 5 homes in your building join, and −5 % more with a partner property manager.