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Beat the Heat: AC Troubleshooting

Expert Tips for Common AC Issues



Hey there! In St. Louis, a fully functional air conditioner is essential for our hot summers. But even the best AC systems can hiccup, especially when you need them most. That's where we, Rhymes Heating & Cooling, come in, ready to lend a hand with your cooling woes. Let’s dive into some of the most common air conditioner problems and how you might fix them yourself. 


Common Problems and Solutions

The Air Conditioner Won't Turn On


  • Thermostat Issues

First things first, check your thermostat. It’s the brain of the operation, after all. If it's been a minute since you swapped out those batteries, that might just be your quick fix. Make sure it's set to "cooling" mode and try setting your desired temperature a bit lower than the current room temperature to kickstart the system.

  • Electrical Problems

No luck with the thermostat? Head over to your breaker box. Sometimes, the solution is as simple as flipping a tripped breaker back to "on." If it trips again, though, you might have a bigger issue at hand, and that’s our cue to step in.

Air Conditioner Running But Not Cooling

  • Dirty Air Filter

One of the top culprits for an AC that’s running but not cooling is a dirty air filter. This is an easy fix: just swap that dirty filter out for a fresh one and you might feel that cool breeze return.


  • Thermostat Malfunctions

Old thermostats can give up the ghost and not tell your AC to cool your home properly. Upgrading to a newer model not only ensures better performance but can also be kinder to your utility bills.

  • Refrigerant Leaks

If your air feels more 'meh' than 'ahh,' you could be low on refrigerant. This is one you'll want a pro for since handling refrigerant requires special care and tools.

  • Ductwork Leaks

Leaky ducts can rob you of cool air and peace of mind. If you suspect your ductwork is the scapegoat for uneven cooling, we can inspect and seal up any mischief causing those leaks.

Uneven Cooling in the Home


  • Ductwork Complications

Sometimes the issue is with the ducts themselves, especially if some rooms are ice caves and others are saunas. We can help balance this out with some ductwork TLC.

  • Blocked Air Vents

Take a quick tour of your house. Are any vents blocked by furniture or rugs? Clearing these can help improve air flow dramatically.

  • Inadequate Insulation

Poor insulation, especially in older homes, can make it tough for your AC to keep up. We can check out your insulation levels and suggest upgrades if needed.

  • Heat Gain from Windows

Those beautiful, sunny windows can be double-edged swords, heating up your space. Try using blackout curtains during the hottest parts of the day to keep the sun at bay.


Strange Noises and What They Mean


  • Screeching and Squealing

Hear a high-pitched screech? It might be a belt or motor bearing crying out for help. A bit of lubricant might do the trick, or it might be time for a replacement.

  • Rattling and Banging

These sounds can suggest something more serious, like issues with your blower or motor. It’s best not to ignore these sounds; they can signal major repairs are on the horizon.

  • Smacking Sounds

Sounds like playing cards on bicycle spokes? Check for leaves or debris caught in your blower blades. A simple cleanup might be all you need.

  • Clicking Noises

Clicking when the system turns on and off might be an electrical issue, such as a failing relay. Best leave this to the pros.


When to Call the Professionals

If you’re not comfortable tackling these issues yourself, that’s what we’re here for. Regular professional maintenance can prevent these common issues and keep your AC running smoothly for years to come.



Staying cool in St. Louis is no joke, and keeping your AC in top shape is the best way to make sure you don’t sweat the summer away. Whether you need a quick fix or a major repair, Rhymes Heating & Cooling is here to ensure your home is the cool oasis it should be. Give us a call, and let’s keep the cool air flowing!