5 HVAC Troubleshooting Tips for Every Homeowner

Beginning the summer season without a cooling system or facing winter without a functional AC is everyoneโ€™s nightmare. While it is obvious that HVAC systems, like any other, fail at the worst time, there is no good time for the unit to malfunction. 

There are some air conditioning problems that you can manage without calling in experts in heating repair services. Appropriate air conditioning services and the following HVAC troubleshooting tips can ensure that you enjoy a conducive indoor environment through all seasons.ย 

black and white industrial air conditioner

AC Not Turning On

Your Ac failing to work when you need it most is dreadful. But most people have experienced an air conditioner that does not work after initiating it. When your unit fails to power, it could be something as simple as a tripped circuit breaker or a blown fuse. A tripped circuit breaker needs a reset, while a blown fuse requires replacement. 

If a reset or fuse replacement does not work, check for broken or loose wiring, which may need an expert to repair. Another possibility for an AC not powering is a faulty thermostat. 

Low Refrigerant 

The refrigerant in an AC is like motor oil in a car, hence the lifeblood of the unit. An air conditioning troubleshooting that points to the underperforming unit may suggest low refrigerant levels. Low refrigerant either means it has a leak or was undercharged at the point of installation. When your unit loses refrigerant often, it signifies a bigger problem. 

If you notice stickiness or your premises are not cooling properly, the refrigerant level is possibly low. Low refrigerant levels will compromise the removal of humidity and heat from the air. Multiple leaks may need a replacement of the unit, which the experts in the field best handle.

Thermostat Problems

A faulty or incorrectly calibrated thermostat may not communicate to the AC when it is time to change. The system may not turn on or at the wrong time. If this happens and the thermostat is battery operated, check if the thermostat has power by changing the batteries. 

If the thermostat is getting power, check your temperature settings and confirm it is not changed. The incorrect temperature settings can result from children playing, thermostat resetting or when buttons are accidentally pressed. Ensure all the settings are correct before involving a technician. 

Noisy System

An air conditioner unit comes with a fan that blows air over the evaporator coil, cooling the air. A condenser coil fan blows air over the condenser and transports heat from inside the house to outside. In most cases, the common source of noise in the fan motors is caused by debris and dirt, deteriorating bearings or worn belts. 

If you still hear noise after you complete the air conditioner troubleshooting activities, call in an AC expert to prevent further damage. 

Leaking Room

Air conditioners can only work effectively when your room is leak-proof. When the AC is running, open windows, doors and spaces will allow warm air outside and cause the cool air to escape through the spaces. Experts recommend keeping all windows and doors shut when the AC runs to moderate your room temperature. 

Besides cooling efficiency, open windows put more stress on the AC as they let in warm air, causing pressure on the unit, which may malfunction. Always close all windows and doors as the AC is on. Check for small spaces on the door or near the windows for any gaps that let warm air in and cool air out. 


There are a few AC handling tips that every homeowner should know. However, it would help if you worked closely with your HVAC maintenance expert to understand what you can do and when to call in professionals in the field. 

Krystal | Sunny Sweet Days
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