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5 Things To Check Before Calling An Air Conditioning Repair Contractor

December 22, 2025
air conditioning repair contractor

We're also committed to helping you to avoid unnecessary repair costs. DIY air conditioning repairs can sometimes put you back into the comfort zone without any professional help.

Check The Air Filter

The air filter serves double-duty by keeping both the A/C system and the air in the rooms clean. However, when your A/C unit doesn't have adequate, unrestricted air flow, it can't work efficiently. An extremely clogged filter can lead to a total system failure and very costly repairs.

Check the air filter, especially if you smell a strange odor when your unit is operating. Change the filter, if necessary. Please note that you should never operate your A/C system without a filter in place.

Check Your Fuse Box Or Breaker Panel

When your A/C unit isn't operating at all, check the power supply. If the circuit breaker switch is in the correct position, go ahead and switch it off anyhow and then turn it on again. This is the proper way to reset it and sometimes that's all you'll have to do.

If your unit still isn't powered, locate the emergency cut-off switch. You're most likely to find it directly on the HVAC unit, on a nearby wall or somewhere close to the top or bottom of the basement stairway. If the switch was accidentally turned off, just flip it back on again.

Check That Nothing Is Blocking The A/C Condenser Unit

It's not uncommon for yard debris to build up around your condenser unit when it sits outside. Something as simple as a small pile of leaves can dramatically inhibit the air flow. It only takes a few minutes to check the condenser coils, clean them off and remove any surrounding debris. Make it a part of your routine yard maintenance.

Check To Make Sure The Return Grill Is Not Blocked

The cooling system can't effectively push air into the room unless some air is flowing out of the room at the same time. Blocking the A/C system's return grill is equivalent to shutting off the escape route for the warm air and keeping it trapped inside with you.

Make sure the return grills are clean and clear of any obstructions. If you must put furniture in front of a return grill, place it several inches away from the opening.

Check The Thermostat Settings

The settings might be compromised. The fan should be set to automatically turn on when the A/C unit is activated. The system should be set for cooling (not for heating!). The desired temperature setting for the thermostat has to be set lower than the current room temperature or the cooling unit won't turn on.

Caution: Before doing any work on your air conditioning system, make sure that the electrical power to the system, both to the condenser and to the furnace, is turned off.

Contact LA Heating & Air

If your cooling system is routinely serviced and maintained, there's a good chance that your A/C problem can be identified by ticking through this checklist. However, don't hesitate to contact us if these steps don't provide any relief. As your local air conditioning repair contractor, we'll always respond promptly, courteously and professionally to bring the comfort of A/C back into your home or business. To learn more about services our company offers, please visit our homepage.

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