8 Reasons Why Your AC Won't Start and Solutions

In summer, things can quickly become uncomfortable if your air conditioner won't switch on. Fortunately, HVAC Repair Guide Experts are here to keep you calm even when your air conditioner isn't functioning properly. Here are eight potential causes of your air conditioner not turning on, along with solutions.

1) Check the Thermostat

The simple explanation for your AC not turning on is a thermostat issue. Check to ensure your thermostat is on, set to "cool," and that the temperature is set to a few degrees cooler than the normal ambient temperature of your home. You may also need to replace the batteries. If that doesn't take care of the issue, the temperature sensor in the thermostat might be inaccurate. A thermostat that can't read the set temperature could prevent your air conditioner from turning on. Once you've verified that the thermostat is faulty, it's time to replace it. If you can't decide on a thermostat that's right for your residence, consult with an expert to help determine the best choice.

Air Filter

2) Check the Air Filter

At the very least, your air filter needs to be changed every 30 to 60 days. Depending on how many people and pets you have living in your house as well as the quantity of air pollution in the area around your house, you should change them more frequently. Your air conditioner may freeze and refuse to switch on as a result of a clogged air filter that restricts airflow. It's time to get a new air filter if your old one appears to be dusty or if you can't recall the last time you replaced it. If your air conditioner was frozen, wait until it has thawed before turning it back on.

3) Examine the circuit breaker

Open the electrical panel inside your home and try to see if the circuit breaker connected to your air conditioner is tripped. You can identify if the breaker has tripped if the switch has flipped to the "OFF" position. To resolve this issue, simply flip the breaker so that it's in the "ON" position. If your AC keeps on tripping the breaker after correcting this issue, you may have a serious problem and should get in touch with the experts at HVAC Repair Guide to prevent it from damaging your home or air conditioner.

4) Check the Indoor Shutoff Switch

If your AC won't turn on, the indoor shutoff switch—which is sometimes mistaken for a light switch—might have been inadvertently flipped. These switches are frequently located in a closet, crawl space, attic, or in close proximity to your furnace. Check to see if the shutdown switch is in the "OFF" position once you've located it. In such a case, you must switch it back on. To prevent someone from accidentally turning off this switch, it is usually a good idea to identify it.

5) Check the Outdoor Shutoff Switch

It's possible that the external shutdown switch was recently switched off by you or someone else working on your air conditioner as a safety measure. Find the exterior shutdown switch first; it should be close to your AC unit. You must flip the switch if it is in the "OFF" position in order for your air conditioner to operate.

AC Repair

6) Identify the AC's Reset Button

Your air conditioner might just need to be reset if it won't turn on. Check to see if your air conditioner has a reset button, because not all do. Before attempting to turn on your AC once more, try to locate the reset button and press it. If the reset button isn't visible, you can manually restart your air conditioner by turning off your thermostat for five to ten minutes, then turning it back on.

7) Inspect the AC for Ice Buildup

Check the air conditioner for any ice accumulation on or within the appliance. In order to avoid damaging the AC, you must wait for the ice on your machine to thaw before attempting to start it. Although there are a number of possible causes for ice to form on your air conditioner, it is always best to call HVAC Repair Guide Experts for a consultation to prevent further damage.

8) Ensure the Condensate Drain Isn't Clogged

If there isn't any ice on the air conditioner, there may be a blockage in the condensate drain. As a safety measure, your AC won't turn on if it's clogged. Unclog the drain tube by using suction from a wet/dry vacuum to clear the obstruction. Pouring a tiny bit of clear water and watching it run out can allow you to verify that the obstruction has been removed. It could be best to call the experts if there are major obstructions.