When the summer heat starts to rise, it’s important to have a functioning AC unit. When your AC won’t turn on, it can be frustrating and detrimental to your health (especially if you have kids). There are many reasons why an AC might not work properly, so we created this guide for 5 common problems and how to solve them!

The power is off.

This might seem like the most obvious problem, but it’s also one of the easiest to solve! If you notice that your AC won’t turn on and there’s no power coming from any outlets in the house, make sure all breakers are flipped back up (or check with an electrician).

Sometimes the fuse or breaker can get tripped or blown. If you notice that your AC won’t turn on and there’s power, make sure all fuses are in the “on” position.

If these steps don’t help, reach out to an electrician for a full inspection of your home!

The thermostat is set incorrectly.

The thermostat is the brain of your AC system, so it’s important to set it properly. Make sure you check that the thermostat is on if you want cooling and vice versa for heat. If you’re trying to switch from heating mode to cooling mode but nothing happens, make sure all windows and doors are closed.

The condenser coils are dirty.

If the temperature in your home is too high or low, it’s a sign that there might be an issue with your AC—especially if you don’t see any cool air coming from vents! This could mean that there is dirt and debris stuck on the outside of the unit. The best way to keep your condenser coils clean is by using a wet rag, but make sure not to get it too close!

The AC filter is dirty.

When it’s hotter outside, your air conditioner filters get dirtier faster than when the temperature isn’t as high and there are more people in the home. If you notice that your AC won’t turn on or work properly, chances are that a simple replacement of this filter will solve all of these problems.

The compressor is broken.

If the other issues we’ve mentioned haven’t solved your problem, it’s possible that there might be a more serious issue with your AC unit. If you notice ice coming out from any of the vents and hear no noise when turning on the fan or air conditioner, then chances are this could mean that the AC compressor is broken.

This can be a serious problem and should not be taken lightly, so you may want to reach out to an HVAC specialist for help! *Note that this issue applies only if your AC isn’t turning on at all*

The outside condenser unit is damaged or clogged with debris.

It’s not uncommon for the outside AC unit to get clogged with leaves and other debris. Make sure that you give it a good cleaning by using a garden hose, but don’t aim the water directly at the condenser coils!


If nothing seems to work, the issue may lie in your AC compressor. The best thing to do is consult with an HVAC specialist!

Green Street HVAC  is a family-owned and operated HVAC company that has been serving the community for many years. We offer a 24/365 emergency service, so don’t hesitate to call!