How to clean and maintain central air conditioning
Central air conditioning cleaning and maintenance is a regular task that needs to be performed. It is divided into routine maintenance that can be done by oneself and deep maintenance that must be performed by professionals . Routine maintenance ensures basic cleanliness, while deep maintenance is related to the lifespan and safety of the system.
Parts that can be operated independently in daily life
Be sure to turn off the power before starting to ensure safety.
Cleaning the filter : This is the most basic and crucial step. It's generally recommended to clean it monthly . Remove the filter from the return air vent, rinse it with clean water or vacuum it, let it air dry, and then reinstall it. If the environment is dusty, increase the cleaning frequency.
Clean the air vents and panel : Wipe the dust off the air vents and panel surfaces with a damp cloth to keep them clean.
Deep maintenance recommended to be performed by professionals
Central air conditioning systems have a complex internal structure involving circuits, refrigerant, and ductwork. Deep cleaning and system inspection require specialized equipment and technology. It is recommended to perform professional maintenance at least 1-2 times a year.
Deep cleaning of the heat exchanger : This is crucial for cooling performance and air quality. Specialized cleaning agents and equipment are required to clean the evaporator of the indoor unit and the condenser fins of the outdoor unit , removing stubborn dirt and bacteria (such as Legionella) that may grow on the heat exchange fins.
Unclogging the drainage system : Professionals will clean the condensate trays and drain pipes to prevent leaks or moldy odors caused by blockages.
System testing and maintenance : Check if the refrigerant pressure is normal and if there is any leakage; check the compressor current and motor insulation; tighten the electrical wiring terminals; check if the insulation layer is damaged, etc.
Maintenance cycle and key points
For a more intuitive approach, you can refer to the following maintenance schedule:
Monthly : Clean or inspect the return air vent filter; check that drainage is unobstructed.
Quarterly (before starting up for the next season) : It is recommended to have a professional perform a thorough cleaning , including the filter, evaporator, condenser and drainage system.
Annually (before and after use) : Perform in-depth maintenance , check the main unit (such as refrigerant pressure, insulation resistance, and operating current), and clean the air ducts and heat exchangers.
