Why is my AC unit not working?
When the weather gets hot, you need your air conditioner to keep your home cool. If your AC isn’t working right, it can be frustrating. This guide will help you figure out why your AC isn’t cooling, not turning on, or not blowing cold air. We’ll show you common problems and how to fix them so your home stays comfortable. We want to make sure your air conditioning unit is serviced properly!
Why Your AC Is Not Working: Common Problems and Fixes
AC Won't Turn On
If your AC doesn’t start, check these things:
Power Supply: Make sure your AC is plugged in and the outlet works. With your outdoor HVAC system, it typically has a breaker box connected outside. You should never touch any live current unless you’re a professional. You can also check your home’s circuit breaker for any tripped breakers. Just an expert tip, if the AC breaker is tripped, then there is something wrong going on with the HVAC unit. Call Milestone immediately for expert AC repair!
Thermostat Settings: Ensure the thermostat is turned on. The thermostat controls your central ac system, so you want to make sure it’s turned on. After you’ve checked for your thermostat to be on, make sure it’s set to “cool” and the temperature is lower than the room temperature. If your thermostat uses batteries, try replacing them. If the thermostat still doesn’t work, you should call the experts at Milestone.
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![](https://b2048518.smushcdn.com/2048518/wp-content/uploads/2021/08/HeaterInstallation_Body.jpg?lossy=2&strip=1&webp=1)
AC Not Cooling the House
If your AC turns on but doesn’t cool the house, try these solutions:
Dirty Air Filter: A dirty air filter can block airflow and reduce cooling. Check your air filter to make sure it’s clean and inserted properly. Many times home-owners insert a filter that is not the right size and that causes it to block airflow. You can locate the airflow where the indoor HVAC unit is located or it might be located in individual air vents.
Refrigerant Leaks: Low refrigerant levels can cause your AC to stop cooling. You’ll need a professional to fix leaks and refill the refrigerant.
Blocked Condenser Unit: Ensure the outdoor condenser unit is clear of debris, leaves, and other obstructions. There should be at least 2 feet of space around the unit for proper airflow.
AC Running But Not Cooling
If your AC runs but doesn’t cool, consider these issues:
Frozen Evaporator Coils: Frozen coils can block airflow. Turn off the AC to let the ice melt. Make sure nothing is blocking air vents and that the air filter is clean, then call us to put professional eyes on it.
Duct Problems: Leaky or blocked ducts can prevent cool air from reaching your rooms. Inspect the ducts for damage and have them repaired if needed.
![air conditioning technician repairing an HVAC unit](https://b2048518.smushcdn.com/2048518/wp-content/uploads/2022/09/Why-is-My-Air-Conditioner-Not-Blowing-Cold-Air.jpg?lossy=2&strip=1&webp=1)
![air conditioning technician repairing an HVAC unit](https://b2048518.smushcdn.com/2048518/wp-content/uploads/2022/09/Why-is-My-Air-Conditioner-Not-Blowing-Cold-Air.jpg?lossy=2&strip=1&webp=1)
AC Not Blowing Cold Air
If your AC is blowing air but it’s not cold, check these:
Dirty Condenser Coils: Dirty coils can’t release heat properly. Turn off the power and clean the coils with a garden hose.
Faulty Compressor: The compressor moves refrigerant through the AC. If it’s broken, the air won’t be cool. You’ll need a professional to fix or replace the compressor.
Preventative Maintenance Tips
Regular maintenance can keep your AC running well:
Professional Maintenance: Have a professional check your AC once a year to prevent problems.
Keep Areas Clear: Make sure there’s no clutter around the indoor and outdoor units to allow proper airflow.
Change Filters Regularly: Change or clean your air filters regularly to keep your AC working efficiently.