Answers from an Air Conditioner Technician: Why Ac Is Running But Not Cooling Air in Your Home.

When home or business air conditioning system runs but not cooling, you need a repair — and fast.

Multiple AC unit components  could trigger your air-con system to stop cooling or even working completely. In this article, although a qualified air-conditioning repair technician person should handle all types of central air conditioner repairs, you’ll find a way of handling a simple repairs and maintenance yourself.

In California blower motor issues are most common as well as a frozen units. Poor airflow around your air conditioner may be the reason of water leaking. Your air filter works as the firewall between your residence air and your AC system. All Air conditioners take away moisture from the air. HVAC Unit may shut down and stop cooling when you see water draining out a hose and that pipe gets clogged with algae. Evaporator coils should NOT have ice build up on them. The ice on coils prevent air to contact with the refrigerant. Start your AC and allow 15 minutes to run than check for air temperature that is coming from the vents.

Why is Split AC not cooling or working? Is your Blower motor runs?

Refrigerant leak is another reason for AC blowing hot air. All cooling systems having identical issues – coil is dirty, clogged or frozen, leaking refrigerant, issues with the compressor or blower motor.

Usually the reason for an AC system running but not cooling is just the results of switching the thermostat from “Automatic” to “Fan.” When the switch is set to “Automatic,” the thermostat, which is an integral part of the system, switches on the air conditioning when the indoor temperature rises above the desired temperature that you’ve pre-set. Sensor that detects room temperature in your thermostat sends commands to the compressor to run or not to run the cooling cycle accordingly. A central air conditioner usually connects to a devoted 240-volt circuit.

When your AC system is installed, an HVAC tech should have performed a series of calculations referred to as a load calculation, which determines what size of AC system is right in your home. Your outside condenser unit must be not obstructed  by bushes, plants, tree roots, or outside furniture.

16 Problems why Air Conditioner Not Cooling the house

1.  If air conditioner isn’t turning on,  step outside to verify  your unit outdoors to check if the AC is running and fan is spinning. 
2.  If air-con unit isn't cooling your house properly, look at if any air is blowing from your vents.
3.    If the breaker continues to trip, suspect a short in the system—in the compressor, capacitor, or the fan motor.
4.    If  controller is set  to “on” positions - AC will flow air even if your unit not in a cooling mode.
5.    If the controller is set to “Fan,” , the unit will flow air through the duct, but no cooling will occurred.
6.    If the air handler makes a buzzing sound, it in all probability has a foul fan relay or, more likely, blower fan.
7.    If the outside compressor hums whenever you switch the thermostat to COOL, the problem could be a bad capacitor, as mentioned instantly above, or the low voltage transformer on that unit—one thing that would must be checked by a professional.
8.    If you can hear your central air conditioner working, however it doesn’t cool properly or at all, ensure nothing is obstructing or limiting air flow anyplace in the system—the air filters, registers, and the compressor.
9.    If have done all of the  above diagnostics and find your air conditioner running yet not cooling, it could be best to call  On Call AC Repair Technicians.A n expert HVAC technician will preform additional diagnosetics and let you know next steps on your AC that runs but not cooling.
10.    If air conditioning  experiences a leak, means you don't have enough refrigerant to push hot air outside. Refrigerant leaks cause levels to drop slowly over time. All lines must be checked for leaks and a your AC must be recharge in order to get cold air flow again.
11.    If you hear a pinging or popping sound coming from steel ductwork, this can be attributable to thermal expansion or by air blowing past a loose flap of metal.
12.    If your AC system is low on refrigerant, it’s unable to absorb as a lot heat as it must, leading to greater temperatures.
13.    If air conditioner turns on & your thermostat is set correctly, but AC isn't cooling; you may need your condenser to be cleaned from inside form dirt ot or blockage,
14.    If air conditioner would not turn on or you can see an ice build up, you might have a  issue with the blower motor and or compressor and should call On Call AC Company to repair your AC unit.
15.    If air-con keeps blowling warm air thru your vents, call HVAC and ask them to check on refrigirant and blwer motor..
16.    If your AC is operating, however not lowering temperatures inside, you may have an issue with the termostat sensor.