Q. What regular maintenance do heating and air conditioning systems need?
The most important part of maintaining your units, is maintaining unrestricted air flows. Whether the unit is indoors or outdoors, all filters, heat exchangers and coils should be kept clean and free of restrictions such as dirt, dust and debris.
Many of the most common problems can be fixed or avoided by changing the filter regularly. Most HVAC technician will recommend that the heating and cooling system be checked once or twice a year.