Summer Air Conditioning Maintenance in a Condominium

As the warm season arrives, air conditioning systems return to the centre of condominium management. Where a central cooling system exists, or where the condominium manages common units such as heat pumps and evaporative towers, summer maintenance serves to ensure efficiency, comfort and health safety. Checks before start-up, filter cleaning and inspection of parts posing a biological risk reduce consumption, mid-summer breakdowns and health hazards.

Central systems and individual units

Two situations must be distinguished. Central cooling systems, or equipment serving several units, are common parts under Article 1117 of the Italian Civil Code and their maintenance is the condominium's responsibility. Split units installed in individual flats, by contrast, remain the owner's responsibility, who sees to their cleaning and checks. The summer maintenance discussed here concerns mainly the common systems, without prejudice to owners' responsibility for their own units.

Even when systems are private, the condominium has an interest in setting common rules on the placement of outdoor units, condensate drainage and noise limits, to prevent disputes between neighbours and damage to facades.

Checks before summer

Air conditioning, like heating, falls among the thermal systems subject to energy-efficiency checks under the rules in force for machines above certain capacities. Before the seasonal start-up, the technician verifies the general state of the system, the operating parameters and any control report, and updates the system logbook. A timely check avoids sudden shutdowns on the hottest days, when emergency work is more difficult and costly.

The typical operations of summer maintenance include:

• Cleaning or replacing the air filters
• Cleaning the heat-exchange coils and the outdoor units
• Checking and cleaning the drains and condensate collection trays
• Verifying correct operation and the electrical and refrigerant parameters
• Inspecting parts at biological risk, such as evaporative towers and humidifiers

Filters and air quality

Dirty filters are the most common and underrated defect. A clogged filter reduces output, increases consumption and worsens the quality of the supplied air, encouraging the circulation of dust and allergens. Cleaning or replacing filters is a simple but decisive operation, to be done at the start of the season and repeated according to use. In systems that treat air for several units, filter maintenance affects the wellbeing of all occupants.

Maintaining filters and exchange surfaces also improves energy efficiency: a clean system works less to achieve the same cooling, with direct benefits for common costs.

Legionella risk in air-handling systems

Air conditioning systems that use water, such as evaporative cooling towers and humidifiers, can foster the growth of legionella if not maintained. The national guidelines for the prevention and control of legionellosis devote attention precisely to air-handling systems and evaporative towers, which must be managed with cleaning, disinfection and periodic checks. In condominiums that have these components, summer maintenance also has a clear health dimension.

The legionellosis risk assessment provided for buildings guides the definition of the most suitable measures and frequencies, depending on the system's characteristics and use.

Regulatory obligations and refrigerant gases

Air conditioning systems are subject to control and maintenance obligations under the rules on thermal systems and, for fluorinated refrigerant gases, under the European rules on fluorinated greenhouse gases, which require periodic leak checks and the recording of work for equipment above certain thresholds. The manager must ensure that whoever performs the maintenance is qualified and that the documentation is in order.

Staying compliant is not merely a formality: it reduces losses, protects the environment and avoids penalties for the condominium.

Cost allocation and scheduling

The cost of maintaining common air conditioning systems is allocated under Articles 1123 and following of the Italian Civil Code, by thousandths (millesimi) or by use depending on whether the system serves all or only some owners. Recurring ordinary maintenance is part of the annual budget, while significant replacements follow the rules for extraordinary maintenance with a resolution of the meeting.

Scheduling maintenance at the start of spring, before the peak demand for technicians, makes it possible to obtain better terms and to reach summer with the systems ready. With AmministraPro the manager can add summer checks to the maintenance calendar, store logbooks and reports and inform owners. The features are described on /funzioni, with the plans on /prezzi.