How to Turn on an Air Conditioner

Owners should examine their units each season before turning them on, and this applies to even the best air conditioners. Below, we’ll outline this critical set of tasks as we show you how to turn on a central air conditioner after the cold winter months. And if you find you need to run any repairs or tests, we also have an article that shows how to turn off an air conditioner properly.

Some of our other info content includes maintaining a central air conditioner, winterizing an air conditioner, learning how to set a timer on an air conditioner, and how to unlock the A/C thermostat. Plenty of help to get you familiar with your A/C unit.

Turning on a Central Air Conditioner for Summer

STEP 1 Check the Outdoor Unit for Damage

1. Take off any type of weather cover, coil blanket, or tarp you may have used to protect your unit over the winter.
2. Look around to see if there are any missing pieces or panels, any sign of burn marks or blown fuses, or any damage from adverse weather.
3. Check the pipes and condensate run-off for any damages or debris. If you find any clogs, you can check out our article on how to unclog an air conditioner’s drain pipe.
4. If anything looks seriously damaged, call an HVAC professional to inspect.
5. Remove any debris (branches, leaves, mulch, etc.) around the unit that might have collected during the winter.

STEP 2 Inspect the Indoor Unit

1. Check the state of the air filter. If it looks dirty, purchase a new one and replace it. If it’s washable, use soap and water to clean it. Let it dry, and then replace it.
2. Check the air grills and vents for excessive dust, hair, or debris. If dirty, use a vacuum to remove it.
3. Check the drainage hose for any cracks, clogs, or leaky air ducts.

STEP 3 Turn on the Central Air Conditioning

1. Go outside to the electrical panel found in the breaker box located on the outside wall near your AC unit and make sure the power switch or lever is turned to “on.”
2. Go inside to the thermostat control board and power up your AC unit.
3. Check to see if the airflow is cold and strong. If not, contact an HVAC repair company

F.A.Q.S