Ventilation and air conditioning at home: two different needs

Ask which air enters and which leaves

When a room cools down, it is easy to assume it has been ventilated too. However, air conditioning and air renewal have different functions. Equipment that recirculates indoor air does not, by that fact alone, supply outdoor air. To understand your home's arrangement, ask explicitly how air enters, moves through and is extracted.

Prepare a plan showing bedrooms, living room, bathrooms and kitchen, and identify existing grilles or extract fans. You do not need to identify the system yourself: photographs and available documentation help the professional review it. Avoid covering openings for appearance's sake before understanding their function in the home.

Relate ventilation to how the home is actually used

Explain how many people usually use the spaces, which doors remain closed and what will change after the renovation. A bedroom becoming an office or an internal layout change should be included in the assessment. If there are persistent smells or a stuffy atmosphere, describe when they occur without automatically attributing them to a particular fault.

Humidity may also be a concern in homes on the Málaga coast. The response needs to distinguish possible causes and building conditions; adding an appliance without reviewing the case does not justify a promise that the problem will disappear. Bring your observations to the visit so the proposal responds to what is actually happening.

Understand the role of mechanical ventilation

Soler & Palau describes residential solutions that renew air through mechanical ventilation, including heat-recovery options. Selection depends on the project and available space. A heat-recovery unit should not be presented as an automatic replacement for air conditioning or a guarantee of resolving every humidity problem.

If this option is proposed, ask for an explanation of the inlets and outlets, duct routes, equipment location and access to components needing attention. Also ask which controls you will use. The proposal should be understandable in a simple diagram, even though sizing and checks are the professional's responsibility.

Put regulations in the right context

Basic Document HS 3 of Spain's Technical Building Code addresses indoor air quality and defines its own scope, which includes the interiors of homes. For other premises, it refers to the RITE requirements. A residential criterion should not simply be transferred to every shop or business activity.

For an existing home, ask the technician to determine which requirements apply to the intended work. The type of intervention matters. This article does not set airflow rates or replace that assessment; it helps you ask the necessary questions before a renovation changes routes or removes parts of the current installation.

Coordinate ventilation with finishes and handover

Review the positions of terminals and access panels together with ceilings, furniture and lighting. Make clear which components must remain accessible and what operating and maintenance instructions you will receive. Keeping their references helps with future enquiries and avoids confusing an air-conditioning grille with a ventilation grille.

Benalclima assesses air conditioning and air renewal as parts of a coordinated installation. When requesting a proposal, explain what you want to improve and which building work is planned. The aim is a clear solution suited to the space, without health promises, claims of eliminating all humidity or guaranteed savings that a general description cannot substantiate.

More common questions

Does an air conditioner's fan mode renew the air?

Not necessarily. If the unit only moves indoor air, that mode does not bring in outdoor air. The system's characteristics and the ventilation planned for the home need checking.

Can I use the same approach for a home and commercial premises?

This should not be assumed. The use and scope of applicable requirements may differ. The technician needs to assess the activity, existing installation and planned work in each case.