If the AC is blowing but not cooling the air at all, then it is likely that you have a problem with your outdoor condenser. Double-check that the fan and compressor are running.
There are a number of reasons why your air conditioner might be running but not cooling. It could be an issue with the thermostat, the compressor, or the evaporator coils. Or, it could simply be clogged with dust and debris, which is preventing it from working properly.
Low or Leaking Refrigerant
If there is a leakage in the coils or refrigerant lines, the refrigerant level in the cooling unit will decrease, resulting in warm air blowing from your vents or even reduced cooling performance. Over time, the refrigerant leaks can lead to low refrigerant levels.
One major reason for your air conditioning system blowing out cool air during the heating cycle is a refrigerant problem. Refrigerant is the lifeblood of your AC system, facilitating the heat exchange process. If there's a leak or insufficient levels of refrigerant, your system may struggle to generate enough heat.
Clogged Air Filter: A dirty or clogged air filter can restrict airflow, causing the system to overheat and shut down. After it cools off, it may start blowing air again. Regularly changing or cleaning the filter can help prevent this.
Most vents have a switch or toggle to open and close the vents – you want to make sure that none of your vents have been inadvertently closed. You also want to check the vents for any obstructions that could be blocking the airflow. If you notice any, clear the obstructions and you will hopefully have fixed your issue.
Most modern thermostats will have a clearly marked reset button inside the panel. It's usually small and recessed, so you might need a pointed object like a paperclip to press it. For those wondering specifically how to reset air conditioner thermostat models, the process is generally the same.
Worried about that fog or the mist you see coming from your AC? Don't worry—it usually doesn't mean there's something wrong with your air conditioner. The mist is just condensed water vapor that forms when cold, dry air comes into contact with humid, warm air (we'll explain this in more detail later on).
Lots of things can cause your blower to have trouble, especially if it gets too dirty. A fan clogged by dirt, a stuck wheel, broken motor, or a loose fan belt are all common problems that reduce the amount of airflow you feel coming from your vents. How to fix: Call an AC tech to examine and fix the blower.
On average, AC compressor costs range from $800 to $2,300, with most folks paying $1,200 for a new one. However, your price will vary depending on factors like the size and brand of your compressor. Before you schedule your replacement, read on to learn about all AC compressor cost factors.
Not really. Maybe a very slight breeze if the furnace is running just from the inducer fan motor, but if you're feeling air coming out while the ac or fan is running, it means the seal at the top isn't seated properly.
To resolve weak airflow issues, it is recommended to: check and replace air filters regularly. clear any obstructions near vents or registers. inspect and maintain the blower motor.
Yes, you should turn off your AC if it's not cooling.
Power down your AC: Turn off your AC unit and unplug it from the power source. This will ensure that you stay safe while working on the unit. Locate the reset button: Most air conditioning units have a reset button located near the outside unit. It is usually a small button located inside a small hole.
Check these issues when the unit won't kick on: Check the thermostat and adjust the settings if it isn't set to Cool and an appropriate temperature setting to call for cooling. Examine the house circuit breakers for the AC unit and reset any tripped breakers. Check the air filter and replace the filter if it's dirty.
Check to make sure that your air registers (the vents that blow the cold air into the rooms of your home) are open and free of blockage. Sometimes, these get closed, or dust can build up over time and limit airflow. Remove the registers with a screwdriver and make sure that they are clear of dust and blockage.
Installing a new heating and air conditioner blower motor could cost around $150 to $250, with most of that coming from labor costs. HVAC technicians usually go for around $75 to $125 per hour. A blower motor replacement might take anywhere from one-and-a-half to two-and-a-half hours.
Low Refrigerant
The most obvious and common reason an AC unit blows warm air is due to low refrigerant. Refrigerant is necessary for an AC unit to run correctly. As the name implies, creating refrigerated air from the AC is vital.
If you notice a change in the airflow of your HVAC system, then you should look into calling a professional. They can come out and test your equipment to determine how strong the airflow is. How strong should air come out of vents? The recommended airflow for each room is typically 50 cubic feet per minute.
AC is Producing Warm Air
One of the surefire signs of a clogged refrigerant line is if you notice the AC producing warm air when you expect cold air. The warm air is caused by a problem with the proper circulation of the refrigerant fluid, which is instrumental in cooling the air.
Resetting your thermostat is an easy first step in troubleshooting temperature control issues. If problems persist after a reset, you should contact an HVAC technician for additional diagnostics and repairs.
Check the thermostat
You should check if it's been set to the correct temperature and also make sure it's set to “cool”. If the AC settings are not right, it won't turn on. You can also check if the batteries in the thermostat are fresh and replace them if needed.