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Nothing disrupts the comfort of your home faster than your ac not working when you need it most. Whether it’s a sweltering summer day or you’re relying on your AC to remove humidity during the off-season, a malfunctioning unit can be frustrating. Before you call for an expensive repair, try these simple troubleshooting tips to get your AC back in action.

family looking at ac not working

1. AC Not Working in House? Check These Things First

If your AC won’t turn on, it could be something as simple as: 

  • Dead Thermostat Batteries: Replace the batteries in your thermostat and triple check that it is set to “cool” at your desired temperature. 
  • Tripped Circuit Breaker: Check your home’s electrical panel. If the breaker for your AC is tripped, flip it off and back on. 
  • Thermostat Settings: Double-check that the thermostat is in the correct mode and set it to a temperature lower than the current room temperature. 

If none of these solve the issue, you might have a wiring problem or a more serious malfunction that requires professional help. At this point, either call the professionals, or move on to step two. 

2. Try These if Your AC Blower Isn’t Working

If your air conditioner won’t blow air at all, start with:

  • Circuit breaker: Again, a tripped breaker is a common issue. If the breaker keeps tripping, it could indicate a faulty breaker or electrical problem.
  • Clogged drain line: Many units shut off automatically if the drain line is clogged. Clear any blockages to restore functionality.
  • Shut-off switch: Ensure the external shut-off switch near your unit is turned on.

If these steps don’t help, the issue could involve faulty wiring or a bad switch. In this case, call an HVAC technician to inspect and repair the problem.

3. Steps to take if You Have a Frozen AC Unit

If you notice ice forming on your air conditioner, it means the coil inside your unit is freezing up. Causes include low refrigerant, restricted airflow, or faulty components.

  • Step 1: Turn off your AC and switch the fan to “auto” to melt the ice.
  • Step 2: Check the air filter for dirt or debris and replace it if needed.
  • Step 3: Ensure all vents and registers are clear and unblocked.

If the coil continues to freeze, you may have a refrigerant leak or a damaged line. Contact a professional to address these more complex issues.

4. AC Running Nonstop? Adjust These Settings

An air conditioner that never shuts off is more than just an annoyance—it’s a sign of a problem that could lead to higher energy bills and long-term damage to your system.

  • Check the thermostat: Make sure it’s set to a reasonable temperature and functioning properly. Turn it off briefly to see if the AC unit stops running.
  • Replace the air filter: A clogged filter can restrict airflow, forcing your AC to work overtime to cool your home.

When to Call the HVAC Professionals if your AC is not Working

While these troubleshooting steps can resolve many common AC issues, not every problem has a quick fix. If your air conditioner still isn’t working after trying these tips, it’s time to call an HVAC professional. Don’t attempt to handle wiring or refrigerant issues on your own—leave those to the experts.

Need Help Fast? Contact Now Heating & Air Today!

Our experienced technicians are here to diagnose and fix your air conditioning issues quickly and affordably. Stay cool this summer—call us now!

Now Heating & Air
8661 Rosemary St
Commerce City, CO 80022

Phone 303-287-8000