AC Repair St. Louis

When your air conditioner isn’t working correctly, call our 24-hour emergency repair service for a quick response and reliable AC service.

No matter how hot it is outside, your AC system should be at its best. However, St. Louis summers can put your air conditioner to the test. At Thomas Hoffmann Air Conditioning & Heating, we know how inconvenient and uncomfortable it is when your air conditioner stops working, especially in the middle of a heatwave.

Call us if your AC system goes out or isn’t blowing out cold air. Our 24-hour emergency repair service ensures that you stay cool.

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Air Conditioner Repair Services

Whether your cooling system is new or old, Thomas Hoffmann Air Conditioning & Heating can quickly restore your home’s comfort level. With over 30 years of experience, Thomas Hoffmann Air Conditioning & Heating has solved everything from minor calibration issues to complete system failure.

Almost every homeowner has experienced some issue with their air conditioner. When you experience any decrease in comfort, strange noises or smells from your unit, rising energy costs, or leakage around your system, it’s time to call the experts. Unfortunately, air conditioners don’t fix themselves. If you procrastinate, the problem will likely worsen and be more expensive. When one component malfunctions, it strains the entire system, leading to further complications.

Common AC Repairs

If you experience a problem with your AC system, knowing some common causes of AC repairs is good. Below are some of the most common issues AC repair technicians encounter daily throughout the hot summer months. Having a better understanding of these common problems can help you feel more at ease with the air conditioner repair process and better comprehend your AC repair technician’s information.

  • Refrigerant leak
  • Drainage issues
  • Broken compressor fan
  • Frozen condenser coils

Refrigerant Leak

Air conditioners contain refrigerant, which allows the unit to run efficiently by releasing heat from the air to cool it. When an AC unit is installed, it is charged with refrigerant. However, a poor charge or a refrigerant leak can cause the refrigerant level to fall below the correct amount. Several signs may indicate that the refrigerant in your system is low. Some of these include:

  • Vents are not blowing cool air.
  • The temperature you set your thermostat to is never reached.
  • Ice on refrigerant lines
  • The electric bill is higher than average.
  • Hissing or bubbling noise

To fix this issue, your repair technician will first address the leak that caused the problem and then charge your cooling system with the correct amount of refrigerant.

Drainage Issues

A second common issue concerns drainage. An AC system produces condensation, which should flow away from the equipment. However, a clog in the condensate drain lines or drip pan may cause moisture to go back into your air conditioner. When there is excess condensation, indoor humidity levels can rise and hinder your cooling system’s performance. It can also damage other components.

Your technician will inspect the condensate lines and drip pan to fix this issue. They will clear any clogs and may be treated for algae growth to prevent clogs in the future.

Broken Compressor Fan

A broken compressor fan is a third common problem. An air conditioner’s outside unit houses the compressor, fan, and condenser coils. These parts release heat from the air, transferring it from your home. When the fan isn’t working correctly, the heat transfer is hindered. This will prevent your AC from adequately cooling your home and cause the compressor to overheat.

Your technician will diagnose the issue preventing the outdoor fan from working correctly. The fan will be repaired if necessary, and they will inspect the outside unit to see whether the problem has caused further damage to the system.

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Frozen Condenser Coils

Frozen condenser coils are the fourth most common issue. These coils are in the outdoor unit; your AC will not run properly if they freeze up. When the air can’t flow through your cooling system, ice can form on the coils. The cause is typically dirty air filters or blocked return air ducts. Low refrigerant could also be the cause, requiring a refrigerant charge.

Frequently Asked Questions About AC Repair in St. Louis


How much does AC repair typically cost in St. Louis?

The cost of AC repair in St. Louis can vary depending on the type and extent of the repair needed. To get an accurate estimate, it’s best to get a professional assessment from our technicians.

What are common AC issues that require professional repair services?

Common AC issues include refrigerant leaks, drainage problems, broken compressor fans, and frozen condenser coils. If not addressed promptly, these problems can reduce the efficiency of your AC unit and may lead to higher energy bills.

Can regular maintenance prevent common AC repair issues?

Yes, regular maintenance can help prevent many common issues with your AC unit. Our maintenance services include checking and cleaning the condenser coils, ensuring the refrigerant level is optimal, inspecting the electrical components, and cleaning the condensate drain line. This proactive approach can extend the life of your AC system and improve its efficiency.

What should I do if my AC is not cooling properly?

If your AC is not cooling properly, check to see if the thermostat is set correctly and the filters are clean. If these are in order and you’re still experiencing issues, it’s best to call our 24-hour emergency repair service. This could indicate a more serious problem that requires professional attention.

Is there a 24/7 emergency AC repair service available in St. Louis?

Yes, Thomas Hoffmann Air Conditioning & Heating offers a 24-hour emergency repair service in St. Louis to ensure that you stay cool, especially during the intense summer heat. For immediate assistance, call us anytime at (314) 471-7625.


24/7 Service Call Now

At Thomas Hoffmann Air Conditioning & Heating, we pride ourselves in being a locally owned and operated HVAC company. With more than 30 years of experience and a master technician and mechanical engineer as our owner, we can replace, repair, and provide maintenance for your business or home’s HVAC system.

(314) 471-7625