A standard HVAC tune-up will include three basic phases: inspection, cleaning and service. The service may or may not include repairs; it depends on whether problems are detected during the inspection phase.​

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Inspection – The HVAC technician will most likely begin by inspecting your equipment. You can have everything tuned up during a single visit, or you can have the air conditioner or heat pump serviced at one time of year and the furnace serviced later. However you have it done, an inspection will be performed. This is when the tech will look for signs of wear and tear. In the case of a furnace, he will examine the compressor, look at the motor and ensure that all other components are in good shape.  In the case of an air conditioner or heat pump, he will check the drain pan, ensure that refrigerant levels are adequate and examine other components.

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Cleaning – Whether the tune-up involves the furnace, air conditioning system or heat pump, cleaning should be included. Even if you’re diligent about changing the air filter on a regular basis, the technician will need to clean your system to keep it in tip-top condition.

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Service – This is where you really get your money’s worth. If problems are detected in your air conditioning or heating system, the technician will correct them on the spot. This may involve replacing worn-out parts to keep them from causing serious damage later. If refrigerant levels are low, the tech will look for leaks and recharge your system. Parts like capacitors and fan blades may be swapped out to ensure consistent and efficient operation. It’s far better to do these small, affordable things preemptively than it is to wait until they devolve into serious problems