Tips on How to Keep Your Air Conditioner Running Smoothly

Posted by


Fan Maintenance

If you are experiencing issues with your air conditioner’s fan, the problem is most likely caused by dirty or loose blades. To resolve this issue, cleaning and tightening the blades will usually do the trick. Here are some steps to repair a room air conditioner’s fan:

Step 1: Open the cabinet and locate the fan.

Step 2: Clean any debris with a vacuum and soft cloth.

Step 3: Check the fan blade on the motor shaft for looseness. The blade is fastened to the shaft with a setscrew at the hub of the blade.

Tighten the setscrew with a screwdriver or Allen wrench. If the air conditioner has a round vent fan, tighten the fan on the motor shaft by inserting a long-blade screwdriver through the port in the fan.

The fan is installed in its housing with bolts, and vibration can loosen these fasteners. Tighten them with a wrench.

Step 4: If the fan has oil ports, apply several drops of 20-weight nondetergent motor oil (not all-purpose oil) to each port at the beginning of the cooling season.

Step 5: If you suspect that the fan motor is faulty, test it with a VOM set to the RX1 scale. Disconnect the terminal wires from terminals and clip the probes of the VOM to the wires.

If the meter reads between about 3 and 30 ohms, the motor is functioning properly. If the meter reads either zero or an extremely high number, replace the motor.

To remove the fan motor, remove the fan, the power wires, and several mounting bolts. Install the new motor with the reverse procedure. However, if the condenser coil must be moved to get the fan out, do not attempt to remove the motor. Call a professional service person.

Maintenance for the Motor and Compressor

If you experience any issues with the motor or compressor of the air conditioner, it is best to call a professional service person.

By following the routine maintenance mentioned in this article, you will be able to handle most issues that occur with your central air conditioning or window unit.

What You’ll Need

To repair a room air conditioner’s fan, make sure to have the following tools on hand:

  • Vacuum
  • Soft cloth
  • Screwdriver or Allen wrench
  • Long-blade screwdriver
  • Wrench 20-weight nondetergent motor oil
  • Volt-ohmmeter or multimeter

Read More


1. What are the benefits of maintaining an air conditioner?

Maintaining your air conditioner on a regular basis can help improve its efficiency, reduce energy costs, and extend its lifespan. It also helps ensure that your home or office remains cool and comfortable during hot summer months, and prevents breakdowns and costly repairs.

2. How often should I clean or replace the air filter?

It is recommended to clean or replace your air filter every 1-3 months, depending on usage and the type of filter. A dirty filter can reduce airflow and cause your air conditioner to work harder, which can increase energy costs and reduce its lifespan.

3. How can I clean my air conditioner coils?

You can clean your air conditioner coils by first turning off the power and removing any debris or buildup on the exterior. Then, use a soft brush or cloth to gently clean the coils, being careful not to damage them. You can also use a commercial coil cleaner or a mixture of water and mild detergent.

4. What are some signs that my air conditioner needs maintenance?

Some signs that your air conditioner may need maintenance include reduced airflow, strange noises or odors, higher energy bills, and uneven cooling. It is important to address these issues promptly to prevent further damage and costly repairs.

5. How can I improve the efficiency of my air conditioner?

You can improve the efficiency of your air conditioner by keeping the air filter clean, sealing air leaks and ducts, installing a programmable thermostat, and using ceiling fans or other cooling methods to supplement your air conditioner.

6. Should I hire a professional for air conditioner maintenance?

While some maintenance tasks, such as changing the air filter, can be done by homeowners, it is recommended to hire a professional for more extensive maintenance or repairs. A trained technician can identify potential issues, ensure proper installation and operation, and help extend the lifespan of your air conditioner.

7. What should I do if my air conditioner is not working properly?

If your air conditioner is not working properly, first check to make sure it is properly plugged in and the thermostat is set correctly. If the issue persists, it is recommended to contact a professional technician to diagnose and repair the problem.

Leave a Reply

Your email address will not be published. Required fields are marked *