The answer to 'best maintenance' is regular HVAC maintenance performed by a professional technician. This typically includes an annual tune-up and inspection to ensure your system is running efficiently and safely. During the maintenance visit, the technician will clean the unit, check for any issues, and make any necessary adjustments or repairs.
Regular maintenance is crucial for extending the lifespan of your HVAC system, improving indoor air quality, and keeping your energy costs as low as possible. Neglecting maintenance can lead to more frequent breakdowns, higher utility bills, and a shorter system lifespan.