Your system's long term health depends on regular HVAC maintanence calls by a certified HVAC contractor.
Your house defends itself from the cold with a properly functioning home heating system. The get the best performance from your heating and cooling system then you will need to give it a check up at least twice a year (recommended).
Kingdom Heating, Air & Construction conducts maintenance assessment with this following seasonal checklist:
Learn more about furnace repair and furnace replacement .
Air Conditioning Maintenance