Coil cleaning should be done at least once a year by a Trane Comfort Specialist™. Before your specialist arrives take care to remove any flowers, bushes, weed or grass that has potential to get inside the unit and remember foliage should be at least 2 feet away from the unit. Here’s what your specialist will handle during your maintenance appointment.
Disconnect power to the air conditioner
A Trane dealer will look for the shutoff box outside near the unit. If there is not shutoff box, you will need to show the specialist where the circuit breaker is located to turn the power off there.
Remove outer case
Depending how the outer case of access panels are attached, your specialist will need either a screw or nut driver to do this.
Remove top of air conditioner
Some air conditioners are constructed with the fan assembly attached to the top. If your air conditioner is constructed this way, your specialist will be careful not to stretch or damage any wires.
Clean and lubricate assembly
Your specialist will clean any dirt off the fan blades and use a shop vacuum to clean dirt off the fan motor and shaft. If the motor requires any lubrication, a small amount will be applied to each of its lubrication ports.
Clean A/C coils
Dirt will be whisked away from the surface of the coils with a broom.
Spray trapped dirt away from coils
After covering any exposed wires or motors with plastic, your specialist using either water or a biodegradable foaming cleaner will spray cleaner soak for 10 to 15 minutes on the coils.
Spraying rinse water from the inside, your specialist will remove the cleaner and any dirt away from the air conditioner coils.
Inspect coil fins for damage
Using a special comb, your specialist can straighten any bent coil fins.
Reassemble the air conditioner
Your specialist will reassemble your air conditioner now that your coils are clean.