HVAC service requirements majorly vary according to the place of installation, usage patterns, and some other small factors. HVAC units need to be serviced at least once a year; if you find any problem within this period, a professional inspection is always recommended. To keep your HVAC in the best condition, consider servicing the heater in the fall and air conditioning in the spring. Rainier Heating & Cooling is a trusted name; check Puyallup heating and air conditioning reviews to learn what our customers say about us.