Can an Air Conditioner Overheat in St. Charles, IL?

Thanks to its humid continental climate, summers in St. Charles tend to be warm and muggy. Air conditioning helps keep indoor spaces comfortable when outdoor temperatures rise, but will constant operation cause problems? Can an air conditioner overheat?

At WeatherWise Heating & Cooling, we offer expert AC repair services in St. Charles, IL. Our professionals are aware of the dangers associated with overheating HVAC units, which we explain below.

Do St. Charles Cooling Systems Overheat?

It might seem counterproductive to ask, “Can an air conditioner overheat?” since the appliance distributes chilled air. However, excessive heat buildup is possible if the unit overworks itself during a scorching summer in St. Charles. Unless you take prompt action to cool the equipment and ensure it doesn’t continue overheating, the risk of a system shutdown increases substantially.

Warning Signs of an AC Overheating

Scheduling routine air conditioning maintenance is an excellent way to prevent overheating, but it’s not always enough. It also helps to recognize the indicators of overheating so that you know when to contact an HVAC company in St. Charles.

Typical overheating warning signs include:

• Excessive indoor warmth and humidity: Air conditioners remove humidity from indoor spaces, so increasing humidity and heat in your house signifies an issue with your cooling system. 
• Higher electric bills: Overworked air conditioners consume excess energy, which often translates to higher utility expenses. 
• Unusual sounds from the air conditioner: Your cooling system should produce only a gentle hum during operation. Loud grinding, hissing, and buzzing sounds are usually due to malfunctioning components. 
• Outdoor unit has frost or ice: Ice on your air conditioner’s outdoor unit in the summer doesn’t mean it’s working correctly. It’s a sign that something is wrong. 
• Home takes too long to cool: In most cases, functional air conditioning units take 10 to 20 minutes to cool St. Charles properties. Anything longer than that could be a sign of trouble. 

Reasons Air Conditioners in St. Charles Might Overheat

Can an air conditioner overheat? It absolutely can, usually due to the following reasons:

Clogged Air Filters

HVAC air filters capture small airborne contaminants, allergens, and particles that would otherwise circulate throughout the air inside your St. Charles home. However, these filters aren’t self-cleaning. Over time, they will clog with debris, causing a significant airflow restriction. 

If you don’t change your air conditioner’s filter at least once every 30 to 90 days, the airflow restriction will make it harder for the cooling unit to maintain the temperature set on your thermostat. You’ll also notice a decline in your property’s indoor air quality, which could lead to increased allergies, respiratory illnesses, or dust settling on your belongings.

Dirty Condenser and Evaporator Coils

Air conditioners facilitate the heat transfer to generate cool air using evaporator and condenser coils. These components contain refrigerant, which travels on a closed loop, to remove warmth from indoor air and release it outside. 

Like other HVAC components, these coils can get dirty over time. Unfortunately, clear surfaces are essential for refrigerant to transfer enough heat to keep your home comfortable all summer. The dirtier they get, the harder your equipment will work, which can result in overheating. 

Refrigerant Leaks

Can an air conditioner overheat if it doesn’t have enough refrigerant? Yes, it can.

Since refrigerant flows on a closed loop, you don’t have to refill it or top it off. If the levels drop enough due to a leak, there won’t be enough of the chemical in the air conditioning system to transfer heat properly. The equipment will still work, but at a reduced capacity. 

Overheating is possible due to refrigerant leaks because it forces the air conditioner to work harder than normal. It will be challenging for the system to reach your desired temperature settings, so it may run continuously. 

Evaporator Coil Damage

Sometimes cooling systems overheat due to evaporator coil damage. These components often consist of copper, which is not overly durable. The coils can develop tiny pinholes that cause refrigerant to leak as the holes get bigger over time.