When it’s hot and humid in Winston-Salem, North Carolina, the last thing you want to worry about is a malfunctioning air conditioning system. However, if your system is blowing hot air rather than cool, you may have a problem that needs to be addressed. Check out some of the most common reasons for an AC to blow warm air.

Thermostat Set to Warm

One of the most obvious causes of an HVAC system blowing hot air is that it’s set to heat. During the spring and fall seasons, the temperature can fluctuate drastically so you could end up using both your heating and air conditioning systems in a short period of time. Before you call an HVAC technician, double-check that your system is set to cool. It could save you money and a little embarrassment if the fix involves switching it over to the right setting.

Leaking Refrigerant

An air conditioning system works by removing heat from the air, but it requires refrigerant to work properly. This cooling agent is necessary for the refrigeration cycle, so when the reservoir is depleted, it can’t operate correctly. The refrigerant is never depleted or lost during the cooling process, so the level should remain the same unless you have a leak. An HVAC technician can determine whether the refrigerant is leaking.

Damaged Air Ducts

Most central air conditioning systems use ducts to move air between the various rooms of the home. If one of the ducts becomes damaged, the air could be leaking through the gap. Over time, ducts can lose their insulation or sealing, causing air leaks. Since the air can’t move as efficiently throughout the home, you may notice that cool air isn’t flowing when you have the air conditioner running. If your ducts are more than a few years old, contact an HVAC technician to determine whether you have a leak.

Condenser Unit Blockage

When you think about the air conditioning system in your home, you’re probably only focusing on the indoor unit. However, the outdoor unit contains the condenser, which is one of the most critical aspects of the entire system. The condenser transitions heat to a liquid state, which is part of the process of cooling it down. It then transfers the liquid substance to the surrounding environment, keeping the air in your home cool and comfortable.

Your condenser unit should be kept free from any obstructions so that it can operate properly. Since it’s kept outside, many people don’t realize that this unit could be blocked by overgrown trees or shrubs, leaves and debris, or outdoor furniture. If your AC is blowing out hot air, check the unit outside to make sure it has plenty of space around it for proper airflow.

Outdated Unit

Air conditioning systems are designed to last for about 10 to 15 years with proper maintenance. If yours is reaching the end of its estimated lifespan, it could be having trouble keeping up with the cooling needs in your home. An HVAC technician can determine whether the system needs to be replaced, or if a repair could fix the issue. However, older units tend to have more problems and operate inefficiently, so replacing the system could help reduce your monthly bills. It may be worth considering investing in a new system to take advantage of the energy savings and improved airflow.

Dirty Coils

Dirt and debris in the air conditioning system can also reduce efficiency, which can prevent cool air from flowing properly through the vents. Dirt can accumulate on the coils, which are found in the indoor unit. These coils absorb heat and move that heat to the condenser in the outdoor unit. If they are covered in a layer of dirt, the coils can’t do their job. As a result, the AC may cycle on and off more frequently or blow hot air through the house. It’s best to leave the cleaning of coils to an experienced HVAC technician to prevent damage.

At Air Treatment Inc., we offer a variety of solutions for your cooling system problems, so contact us at 336-740-9895.

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