4 Warning Signs of an Inefficient Air Conditioning System

When the temperature climbs, air conditioning provides a welcome respite from the heat. But if it feels like your AC is struggling to cool your home, it’s time to call an HVAC professional for help.

Knowing the signs of an inefficient air conditioning system ensures your AC system gets the attention it needs before you have to pay more for utilities. Here, Comfort Specialists, the leader in AC repair services in Roxbury Township, NJ, shares the signs your cooling system needs some attention. 

The Most Common Indications of Inefficient AC 

In many cases, the first sign of a problem with an air conditioner is a change to indoor comfort. You might notice that it feels warmer or more humid than usual or that rooms just don’t get as cool as you like. The unit still works, but not as well as it did before. 

However, some more tangible signs of inefficient air conditioning indicate that the AC unit needs maintenance or repair. 

1. Higher Energy Costs 

Although the costs for utilities are rising, and the average family pays more for power than ever before, inefficient AC will cause a sudden and unexpected spike in your monthly bill. The harder the unit works to produce cool air, the more power it uses, and the more you’ll pay. A marked expense increase without any change in habits is a reason to call an HVAC professional to investigate. 

2. Short Cycling 

Your AC system runs in 15- to 20-minute cycles. It’s normal for the system to kick on and off throughout the day, but if you notice that the air conditioning turns on and off more frequently without ever really cooling, something is wrong. It could be the thermostat or an issue with the compressor that requires repair to restore proper function and maximum efficiency.

3. Strange Sounds 

Unusual noises coming from the air conditioner are always a sign of a problem. The AC shouldn’t rattle, squeal, bang, or otherwise make noises beyond a low hum or clicking noise when it starts up. New noises typically mean a broken or malfunctioning part, and ignoring them diminishes efficiency and could cause permanent and irreparable damage. 

4. Ice Build Up 

An accumulation of ice on the coils or the exterior unit is a surefire sign that something’s wrong with the AC system and it’s not working as efficiently as possible. Ice buildup might simply be a sign that you haven’t replaced your filter in a while, or it could be a problem that requires a professional, like broken coils or a refrigerant issue. In any case, continuing to run the unit will cause damage. 

4 Reasons for Inefficient Air Conditioning 

Malfunctions that result in diminished efficiency stem from several common causes.

1. Inadequate Maintenance 

HVAC professionals recommend an annual tune-up to ensure your system stays in top working condition. During the visit, a technician inspects, cleans, and adjusts critical components so the unit works as efficiently as possible. Change the air filter at least every 45 to 60 days to ensure airflow and circulation and keep contaminants from building up inside the unit and causing problems.

2. Low Refrigerant 

Damage to the refrigerant line can cause a leak, and without enough coolant running through the coils, the unit simply can’t lower the indoor temperature. A hissing sound is the most common sign of a leak. Because of the strict rules about working with refrigerant, you must call a professional to fix it.

3. Thermostat Problems

The thermostat is the control center for the cooling system, and if it malfunctions, the system won’t function properly. Wiring problems, dust buildup, sensor failure, or an old and outdated thermostat can all keep your home from cooling off. 

4. Leaking Ductwork

Ductwork with leaks allows chilled air to escape, reducing the HVAC system’s efficiency. This issue often shows up as an increase in utility bills, as the system wastes energy to heat or cool air that never reaches rooms. Have a technician inspect the ductwork during an annual maintenance visit and check for leaks if your bill suddenly spikes. 

Let Comfort Services Keep Your Air Conditioning Working Efficiently 

When you're dealing with inefficient air conditioning, get in touch with Comfort Services at (793) 490-4881. The top-rated local HVAC experts will find the source of the problem quickly and recommend the most cost-effective solutions. We'll also answer your burning questions about how to get the most from the system, share tips on energy efficiency (like leaving the air conditioner on all night), and help you keep your home comfortable year-round.