What Happens During an Air Conditioning Maintenance Call?

Let’s explore what an HVAC technician does during an air conditioning maintenance call. This is an explanation of a call for a split system, but the process is similar for package units and heat pumps.

First, the technician will switch off the circuit breaker for your system and remove the service-disconnect for the condensing unit. This is not simply a safety measure. When a service-disconnect is removed while there is still electricity flowing, an arc occurs. Over time, this can lead to the condenser receiving only 110 volts, instead of the 220 volts it needs to operate, which can damage your unit.

Next, the technician will remove leaves and other debris from the condensing unit, and wash the coils thoroughly. Clogged coils cause your unit to run less efficiently, and can shorten the service life of your compressor. The technician will also check the condition of your unit’s capacitors. This step can eliminate the need for a follow-up call. While the condensing unit is apart, the technician will also check the electric motor to ensure that the air vents are open, which allows the copper windings to cool properly.

Next, the technician will turn to the evaporating unit. The evaporating unit is found in the air handler, next to the heater. The technician will check the electric motor, clean the evaporator coil with a special solution, and replace the air filter found in the return air duct.

Back outside, the technician will ensure that the system contains the correct amount of refrigerant. Too much refrigerant can cause the compressor to work harder, and too little refrigerant can cause the evaporator coil to freeze. A low level of refrigerant can indicate a leaking refrigerant line or Schrader valve.

An annual maintenance call has the potential to save you thousands of dollars in repairs. In addition, it gives you peace of mind, knowing that your home will be comfortable all year round. Call us at WA Air Conditioning today, to schedule your annual service!

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April 27, 2018 8:56 pm