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April 3, 2019


Most people think of the thermostat as a device that shows you the temperature in your room. However, the thermostat is an essential component of an air conditioner. Like most parts of an AC, this one gets damaged at some point. Troubleshooting a thermostat when it’s not working properly seems the immediate option. In some cases, an AC thermostat replacement is the practical option.

Replacing the thermostat isn’t a difficult task, but that does not mean that anyone can do it. I tell clients to do it only if they know how to do it. Otherwise, they should call an AC repair on Maui. Here at Pacific Air Conditioning, we have technicians that specialize in fixing or replacing broken thermostats. We also give tips to clients on how to optimize their air conditioning systems.

Most homeowners take matters into their own hands even though they don’t exactly know their way into the system. Keep in mind that you can worsen the damage in your AC by trying something for the first time. So I remind you to only do this if you can follow the steps.

So without further ado, let me lay out the steps in AC thermostat replacement.

1. THE FIRST STEP and the most important one is to unplug the unit. Make sure no power is running into the system until you’re done.
Tools Needed:
- Flat-head screwdriver
- Wire cutter
- Electrical tape

2. Access the thermostat. It is usually behind the control panel. You need to take off the covers, which can be pulled or unscrewed. Once you have gained access to the thermostat, you will see the sensing bulb. This bulb is sensitive to the changes in your room temperature. On the other hand, mark the location of the bulb, because that’s where you will install the replacement thermostat.

3. Label the wires. Thermostat wires don’t have universal color codes. Manufacturers have their own color-coding systems. Label the wires to know what each one is for. You may take a picture of the wires, so you know where each one goes. Also, make sure the wires don’t touch the wall.

4. Disjoin the wires from the old thermostat using a screwdriver. Loosen the screws holding the wires in place.

5. Replace the old mount with a new mount. Then reconnect the wires, making sure each wire goes to their exact place. Screw the faceplate mount securely to the wall. Finally, set the thermostat face in place.

Turn your air conditioning system’s power back on. Observe your system. You may need to configure the new thermostat by following the steps outlined in the user manual.

Don’t hesitate to call us at 808-244-0161 if you need help in choosing the right AC thermostat replacement. Our expert HVAC technicians at Pacific Air Conditioning are always ready whenever you need AC repair and maintenance on Maui.







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