AC Disaster Incoming? 7 Signs You Need Repairs Immediately

Your air conditioning system is essential to maintaining comfort and air quality in your home, especially during hot and humid summers in Mukwonago, New Berlin, and West Allis, Wisconsin. But what happens when your AC starts acting up? Ignoring the warning signs can lead to breakdowns, costly repairs, or even full system replacement. At Donovan & Jorgenson Heating and Cooling, we believe in catching problems early to save you time, money, and discomfort. Below are seven clear signs that your AC is headed for trouble and needs immediate repair.

1. Unusual Noises Coming From Your AC

Your AC should operate with a low, steady hum. If it suddenly sounds like a rock concert in your vents, that’s a red flag. Listen for:

• Grinding, Screeching, or Clanking Sounds – These harsh noises often indicate serious mechanical problems. Grinding or screeching could mean that a motor bearing is worn out or that components need lubrication. Clanking may signal loose parts or an unbalanced fan. Left unchecked, these issues can cause permanent damage.
• Rattling or Buzzing Sounds – Buzzing may be related to electrical issues, such as a failing compressor or loose wiring. Rattling can suggest debris in the system or loose bolts. These sounds may seem minor at first, but they often point to larger underlying problems that can worsen quickly.

2. Poor or Uneven Cooling Performance

Your AC’s primary job is to cool your home. When it stops doing that efficiently, it’s time to call for help. Keep an eye out for:

• Warm Air Instead of Cool – If your vents are blowing warm or room-temperature air, it could indicate a refrigerant leak, compressor failure, or clogged air filters. Any of these can reduce cooling capacity and overwork your system.
• Hot and Cold Spots in Your Home – Uneven cooling might be caused by ductwork problems, thermostat malfunctions, or a failing blower motor. Your system should cool your home evenly. If it doesn’t, something’s wrong.

3. Increased Energy Bills

A sudden spike in your electricity bill is often your AC, crying for help. When your unit is struggling to keep up, it has to work harder and longer, consuming more energy in the process. Dirty filters, low refrigerant, or malfunctioning components can all contribute to rising energy costs. If your energy bills are higher than normal and you haven’t changed your habits, your AC system is likely the culprit. Prompt repair can help restore efficiency and lower your utility expenses.

4. Excessive Moisture or Leaks

Moisture around your AC isn’t normal and could be a sign of a serious issue. Look for these issues:

• Water Puddles Around the AC – Water pooling around the indoor unit could be due to a clogged condensate drain line or a damaged drain pan. While it may not seem like a big deal, excess moisture can lead to water damage, mold growth, and poor indoor air quality.
• Ice on Coils – If you notice frost or ice on your indoor or outdoor coils, it could indicate low refrigerant, restricted airflow, or a malfunctioning blower fan. Ice buildup means your system isn’t running efficiently and is at risk of complete failure.

5. Frequent On-and-Off Cycling

Does your AC turn on and off constantly without cooling your home effectively? This rapid cycling, also known as “short cycling,” is a common sign that your system is either oversized or undersized for your space, is experiencing electrical issues, or you are dealing with a faulty thermostat or compressor. Short cycling puts unnecessary strain on your AC, increases wear and tear, and significantly reduces efficiency. Getting it fixed quickly can help extend the life of your system.

6. Persistent Humidity Issues

One of your AC’s secondary jobs is to remove excess humidity from your indoor air. If your home still feels sticky or damp despite the AC running, it could mean your system is the wrong size, the evaporator coils are dirty or malfunctioning, or there’s a refrigerant leak. Too much humidity can feel uncomfortable and can encourage mold and mildew growth. If your AC isn’t balancing humidity levels, it’s time for a professional inspection.

7. Electrical Problems and Malfunctions

Electrical issues should never be ignored. They pose serious safety risks and can permanently damage your HVAC system. Watch for these issues:

• Tripped Circuit Breakers – If your AC keeps tripping your circuit breaker, it may be drawing too much power due to a failing compressor, faulty capacitor, or shorted wires. This is a major safety concern and requires immediate attention.
• Unresponsive Thermostat – If your thermostat isn’t responding, won’t turn the system on, or displays incorrect temperatures, it could be a problem with the thermostat itself or the connection to your HVAC system. This can cause inconsistent cooling and further strain on your unit.

Contact Donovan & Jorgenson for AC Repairs

Don’t let small AC issues spiral into a full-blown cooling disaster. The sooner you recognize and address problems, the more likely you are to avoid costly repairs or system replacements during an emergency AC repair visit. At Donovan & Jorgenson Heating and Cooling, our certified HVAC technicians provide fast, reliable, and honest service throughout Southeast Wisconsin. We offer expert diagnostics, affordable repairs, and peace of mind so you can stay cool all summer long. Whether you’ve noticed one of the signs your AC needs to be repaired or are looking to invest in an AC replacement, our team is here to help. With decades of experience in the heating and air conditioning field, we can help you find the perfect solution for your home. Contact our team of specialists today to learn more.