The answer to 'how to maintain installation' is to perform regular maintenance and inspections to ensure your HVAC system is operating efficiently and safely. This includes cleaning or replacing air filters, inspecting and cleaning the condenser unit, checking refrigerant levels, and scheduling professional tune-ups at least once a year.
Regular maintenance will help extend the lifespan of your HVAC system, improve indoor air quality, and reduce energy costs. It's important to follow the manufacturer's recommended maintenance schedule and only use qualified HVAC technicians for any major repairs or service.