HVAC problems can come in many forms. While it can be obvious that your air conditioner is broken if it is not turning on at all, you likely have more questions when the air conditioner turns on and does not produce cold air. Here is what you can do to look into the problem.
Check For Tripped Breakers
One of the first things that you want to check is for a tripped circuit breaker that provides power to the air conditioner's condenser. It's possible that the inside air handler is turned on and the fan is moving, but that compressor doesn't have the power it needs to move the refrigerant to the evaporator coils inside your home. The fix may be as simple as flipping a circuit breaker back on to have cold air again.
Replace The Air Filter
Do you remember the last time that you changed your air filter? It's important that you replace the filter according to the owner's manual since different types of filter have to be changed at different frequencies. There is a possibility that the filter is so clogged that cold air is unable to pass through the air filter, so you just end up with warm air that comes out from the vents. Replace the air filter and see if that does the trick.
If you recently replaced the air filter and now you do not have cold air, you may have put the incorrect filter in your HVAC system. This often happens when people buy the incredibly thick HEPA filters that are not designed to run with their air conditioner, which also makes it so that cold air can't pass through. Replace the air filter with one that is the proper size to solve this problem.
Check The Refrigerant
Your air conditioner requires refrigerant at the proper pressure levels in order for it to work. Unfortunately, a leak in the system can prevent the refrigerant from doing its job. Not only does more refrigerant need to be put into the system, but you will need professional help to find the leak and repair it. If you don't do this, all that new refrigerant is just going to leak back out of the system and you'll have warm air again.
Not sure what is happening with your home's air conditioner? Reach out to an HVAC specialist in your area for their assistance with figuring out your cooling problem.