If you’re looking for window AC unit repair services or tips, you’ll be glad you stopped here.

Your window AC unit cools just like the central air conditioner. This means that it will develop issues just like any other cooling system.

Regular window air conditioner maintenance may help prevent some issues. However, some issues may still arise, regardless of how well you did window AC maintenance. And this is probably why we are here.

Also read: Window AC vs central AC.

Are you facing issues with your window air conditioner?

Join us as we examine common issues affecting window air conditioners and explore solutions to address them.

Common Problems with Window Air Conditioners and How to Fix Them

We look at common issues affecting your window or room air conditioner. However, that is not enough; we provide you with some troubleshooting tips and guidance on how to resolve the issues.

Sometimes, these DIY procedures are effective and resolve the issues at hand. Sometimes, unfortunately, they don’t. In this case, we also tell you when to get professional home air condition service for your malfunctioning window AC. 

Shall we get into the details?

Bent Fins

On the rear side of the AC unit, you will see delicate aluminum fins. If they are straight, that is okay. However, if they are bent, you need to straighten them for optimal operation.

Straightening the fin is straightforward; you do not need to call for professional AC repair.

You will need a fine strengthening comb to do this repair. You can find the combs in your local hardware.

Window Unit Fan Running Not Blowing Cold Air

Window units have two motors: the fan motor and the compressor. Sometimes, only one may be running.

If you lift the cover blade and find that the fan blade is not moving, it may need some oiling or replacement. Ensure the fan is not clogged with dust as well.

Water Leaking from the Window AC Unit

Condensed water usually accumulates in all air conditioners and needs to be removed. This is why air conditioners tilt backward: to allow for easy elimination of condensed water.

However, if you spot water dripping down the system to the floor or on the walls, there is an issue.

Here is why your window AC unit is dripping water:

• a drain pan that is not adequately sloped,
• clogged drain line,
• clogged drain port.

Here are tips for troubleshooting and repairing your window air conditioner

• Unclog the drain port: Inspect the drain port for any visible debris and remove them. If you cannot find any visible materials on the drain port, pour water down the drain. If the water flows, then there is no clogging. However, if it pools in the pan, there is an obstruction that a vacuum can clear.
• Check the sloping of the drain pan: Is the drain pan well sloped for proper drainage? Typically, the manufacturer’s manual has the recommended slope direction and angle. However, for many systems, 1/2 inch slope from the front of the unit to the rear end would work effectively. If the slope is not correct, you may need to call a professional to help you rectify it.

Indoor Air Smells Musty

Air conditioners remove hot air from the indoor space. Additionally, they remove moisture. This moisture is then evaporated. However, some of it can stagnate at the base of the air conditioner.

Additionally, debris may accumulate inside the system and absorb water. This makes it a good haven for mold and mildew.

If you’re experiencing musty odors from your air conditioner, it’s essential to perform a thorough cleaning. Typically, cleaning the water pan at least once or twice a year or when you clean the condenser coils, would be best.

Read: How to clean mold from Central AC.

Window AC Not Cooling

You might need a refrigerant top-up if you are not receiving cold or hot air. Only professionals should handle this.

However, it is not always about refrigerants.. Sometimes all you may need is to clean the AC unit. When your window air conditioner is not cooling, start by remembering when was the last time you cleaned it.

You can clean the area yourself or hire a professional to do it for you. If you decide to do it yourself, consult your manufacturer’s manual first.

Follow these simple steps to clean your window air conditioner

Unplug the unit

Unplug your window unit and carefully remove it from the wall or window. If you just want to clean the air filter, there is no need to uninstall the entire unit from the wall. Just remove the grille to get the air filters.

If you are cleaning the entire unit, uninstall it and put it on a flat surface.

Removing the grille

Many of the grilles can be easily removed. You can then remove the air filters and the metal cover.

For some units, you may need to unscrew the metal cover.

As you remove the air filters and metal cover, be sure not to destroy the coil fins.

Clean the air filters

If your air filters are not washable, replace them with new ones.

Many appliance repair shops sell replacement air filters.

If the filters are washable, thoroughly rinse them under running water and allow them to air dry.

Use a vacuum

Use a soft brush attachment vacuum to clean the coil fins. Ensure you clear all the dust and debris.

Clean the rest of the unit

Use a clean and wet rag to clean the rest of the air conditioner. While cleaning, do not forget the drains that let out condensed water. Ensure they are open and free from debris. Clean them and ensure they are completely dry after.

Lubricate the Unit

While the unit is still apart, lubricate the bearings and the motor. After the unit is fully dry, reassemble and reinstall it.

Window AC Compressor Not Turning On

If your air conditioning does not turn on, try doing this.

• Ensure the unit is plugged in or the switch is on. Also, ensure the thermostat is set to cool and is below room temperature.
• Use a voltage tester to verify that the outlet is functioning properly.
• Ensure the circuit is not overloaded. Check the electrical panel or the fuse box. Reset the breaker. You may need to replace the fuse if it does not turn on.
• Ensure the thermostat is clean and has working batteries. Replace the batteries first and see if the issue is resolved. 

If none of these steps turn on your window AC unit, consider it a good time to call a professional technician.

Window Air Conditioner Makes Noise

Bad bearings are a significant reason behind excessive noise from room air conditioners.

Sometimes, it is essential lubrication that can solve the noise issue.

If the noise persists after lubrication, contact your local HVAC technician for cooling system repair.

Window AC Cycles on and Off Too Frequently

If the AC is short cycling, it could be having:

• issues with the thermostat, such as poor location or dirt,
• oversized or undersized air conditioner,
• dirty evaporator or condenser coils,
• refrigerant leak,
• dirty air filters.

How to fix an air conditioner that cycles on and off too frequently

If your window AC is short-cycling, you can troubleshoot it before calling a professional HVAC technician. Here is what you can do:

• Check that the thermostat is functioning well. Start by ensuring it is free of any dirt and debris. If it is dirty, remove it from the evaporator fins and clean it with a wet piece of cloth. Next, ensure that there are no obstructions over the thermostat.
• Clean the evaporator coils, air filters, and condenser coils.

If these two steps do not solve the issue, your system is either oversized or undersized. If you had trouble choosing the correct size during the window AC unit installation, it might also be difficult for you to pinpoint it. Call an HVAC technician to help determine whether the unit is the correct size for the space you are using it for.

If it is the wrong size, the only way out is to have the correct-size unit installed.

The other issue, which is possibly leaks, can only be handled by professional air conditioner freon leak repair contractors. 

The window cooling Unit Will Not Turn On

If your AC unit doesn’t turn on, it may be facing these problems:

• A defective power cord,
• A bad wall outlet,
• Blown fuse,
• Tripped circuit breaker.

Before you call your HVAC repair technician, you want to ensure:

• The unit power cord sits correctly on the wall outlet,
• Ensure the outlet is working with a voltage tester.

If none of this seems to work correctly, you may be experiencing a mechanical issue that a certified technician would better address.

Unit Repeatedly Trips the Circuit Breaker or Blows Fuses

If the unit frequently trips the circuit breaker or blows fuses, the issue is typically on the power supply to the system. If the circuit is overloaded with devices, it will result in repeated blown fuses and tripped breakers.

To solve this issue, reduce the load on the circuit. Disconnect other devices on the same circuit as your air conditioner.

We recommend having a dedicated circuit breaker for your air conditioner. However, only a technician should install a dedicated circuit for your window AC.

Rarely will this issue be caused by refrigerant leaks or overheating of the system, but it can happen.

Window Unit Issues: Repair or Replace?

One reason people go for window air conditioners is that they are affordable. We all love great things that do not cost us an arm and a leg.

However, just like a regular air conditioner, it will eventually start malfunctioning. This will depend heavily on several factors, such as how diligently you perform window AC maintenance.

What is clear is that at one point, the need for repairs will become frequent; that is a machine for you.

So, at what point do you replace the unit and just let go of the many repairs?

Depending on several factors, window air conditioners last for 8-10 years (1).

Get a new one if the repairs are expensive, and your unit is more than seven years old. You don’t have to keep repairing a system with mechanical issues. Weigh the options and see what suits you best; a window AC unit is not an expensive choice.

Window AC Unit Repair in Santa Clarita

If you need a certified technician to work on your window AC unit, you can completely trust HVAC Santa Clarita.

We are available to provide the best service in Santa Clarita and beyond.

The good thing is that we can troubleshoot together so that you understand what the problem is.

You can trust us to provide quick yet reliable services.

If your window air conditioning unit is experiencing issues, please don’t hesitate to contact us. We will perform repairs ranging from the simplest to the most complex. You can trust us as your partners in keeping you cool on the hottest summer days.

Whether you are looking for residential or commercial AC repair near me, we will do an impressive job for you. 

Window AC Unit Repair Frequently Asked Questions

We answer some FAQs below to help you understand how you can go about the repair of your window AC unit. Many would argue that it is quite similar to a central AC unit, but there are also several differences to consider.

Can a window air conditioner be fixed?

Yes, a window AC unit can be fixed like a traditional air conditioner. It can be disconnected from the wall and repaired even from the HVAC contractor’s office. Therefore, do not hesitate to contact professionals if your system is giving you any issues.

What do you do if your window air conditioner is not cooling?

First, examine if the air filters are clean. If not, replace or clean them according to your manufacturer’s instructions. Next, ensure your evaporator coil is not covered in debris.

Also, check your thermostat setting. Ensure it is set to cool, and the temperature is at least 5 degrees lower than the room temperature.

Your local HVAC technician can address the remaining issues, such as a damaged compressor, a faulty motor, or refrigerant leaks. (2)

Should I repair or replace my window air conditioner?

Replacing the window AC system is always a good choice if your system is more than seven years old. It is not worth spending money on repairs when the system is nearing the end of its life.

Search for “best HVAC installers near me” to find someone who can install a new window AC  for you. 

Final Thoughts on Window AC Unit Repair

Window air conditioners are similar to traditional central AC in many ways but different in many others.

This also applies to their repairs, which are comparable to outdoor AC unit repairs.

If your window AC system gives you any issues, do not hesitate to contact us for window AC unit repair. We would be happy to troubleshoot and bring it back on track for you.

sources

https://www.thespruce.com/window-mounted-room-air-conditioner-1824786

https://www.cnet.com/home/energy-and-utilities/signs-that-its-time-to-replace-your-window-air-conditioner/