1. AC Won’t Turn On
There can be a few causes why your air conditioning system won’t work: a tripped circuit breaker, inaccurate thermostat settings, a shut off switch or an overfull condensate drain pan.
Tripped Circuit Breaker
Your air conditioning won’t work when you have a tripped breaker.
To find out if one has blown, locate your residence’s main electrical panel. You can spot this silver fixture on the wall in the basement, garage or closet.
- Make sure your hands and feet aren’t wet before you work on the panel or breakers.
- Look for the breaker identified “AC” and confirm it’s in the “on” location. If it’s overloaded, the breaker will be in the middle of the panel or “off” position.
- Firmly transfer the switch back to the “on” position. If it instantaneously trips again, don’t reset it and call us at 313-230-4053. A switch that keeps flipping may mean your residence has an electrical issue.
Incorrect Thermostat Settings
If your thermostat isn’t signaling your system to start, it won’t turn on.
The main part is checking it’s switched to “cool” and not “heat.” Otherwise your air conditioner might not switch on. Or you may get heated air blowing from vents because the furnace is on instead.
If you have a digital thermostat:
- Put in new batteries if the monitor is empty. If the monitor is displaying garbled characters, buy a new thermostat.
- Make sure the correct option is showing. If you can’t change it, reverse it by dropping the temperature and pushing the “hold” button. This will make your AC start if scheduling is not right.
- Test setting the thermostat 5 degrees below the house’s temperature. Your AC won’t cool if the thermostat is set the same as the house’s temperature.
Once your thermostat is set correctly, you should receive cold air fast.
If you have a smart thermostat, including ones manufactured by Nest, Ecobee, Lux, Honeywell or Bosch, go to the manufacturer’s website for help. If you still can’t get it to work, contact us at 313-230-4053 for assistance.
Your cooling equipment usually has a power-cutting lever around its condenser. This switch is typically in a metal box mounted on your home. If your unit has recently been worked on, the switch may have unintentionally been placed in the “off” location.
Clogged Condensate Drain Pan
Condensate drain pans hold the extra condensation your equipment removes from the air. This pan can be situated either under or inside your furnace or air handler.
When there’s an obstruction or blocked drain, water can become concentrated and prompt a safety feature to switch off your air conditioner.
If your pan has a PVC pipe or drain, you can clear the additional water with a custom pan-cleaning tab. You can get these capsules at a home improvement or hardware shop.
If your pan has a pump, look for the float switch. If the mechanism is “up” and there’s moisture in the pan, you could need to get a new pump. Reach us at 313-230-4053 for support.
2. AC Blows Warm Air
If your AC is on but not providing cold air, its airflow might be congested. Or it could not have enough refrigerant.
Your system’s airflow can be restricted by a plugged air filter or filthy condenser.
How to Change Your Air Filter
A filthy filter can lead to many troubles, such as:
- Limited airflow
- Frosted refrigerant lines or evaporator coil
- Uneven cooling
- Increased electricity bills
- Making your system stop working sooner
We propose replacing flat filters every four weeks, and creased filters every three months.
If you aren’t sure when you last replaced yours, shut off your AC completely and pull out the filter. You can find the filter in your furnace or air pump’s blower compartment. It may also be located in an attached filter case or wall-mounted return air grille.
Tilt the filter up to the light. If you can’t see any light, you need to replace it.
How to Clean Your AC Unit
Brush, plants and shrubbery can obstruct your condensing unit. This could reduce its airflow, lower its energy efficiency and affect your comfort. Here’s a method you can follow to get your system operating well again.
- Switch off the electrical current fully at the breaker or outside device.
- Clear greenery debris around the equipment. Once you’ve cleared larger clutter within a two-foot range, you can use a soft brush or vacuum to gingerly remove dust from the equipment’s fins. Distorted fins can also impact performance, so you can attempt to reshape them with a dinner knife.
- Lift off the upper part of your AC and take out any leaves or sticks that has accumulated. Then wipe down the condenser fan with a damp rag.
- Use a hose nozzle to gingerly remove gunk off the fins from inside the system. Make sure to avoid getting liquid on the fan motor.
- Put the top back on and turn on the power.
Low Refrigerant Levels
When air conditioning systems don’t have enough refrigerant, they’ll struggle to remove heat and humidity from your home.
Here are a few symptoms that your system is seeping refrigerant:
- It takes an extended amount of time to lower the temperature in your space and you’re regularly lowering the thermostat.
- Air blowing through the ducts isn’t as chilly as it should be.
- You’re noticing whistling or gurgling noises when cooling runs.
- Your evaporator coil is frozen due to having an issue taking on humidity.
Think your unit is losing refrigerant? You need a certified heating and cooling service expert to fix the leak and replenish the right level of refrigerant in your equipment. Call us at 313-230-4053 for support.
3. AC Not Blowing Enough Air
When it seems like you’re not receiving ample amounts of chilled air, there’s usually an obstruction or disconnection somewhere in your cooling system.
- The initial stage is checking your air filter. Replace it if it’s soiled.
- Then ensure the registers are free throughout your rooms.
- If you’re still not experiencing enough chilly air, you should have your ductwork inspected by a professional like Airtronic Heating & Cooling. Your ductwork could need to be fixed or reconnected in hard-to-reach areas like your attic, basement or crawl space.