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⚡ What to Do if Your HVAC Trips the Breaker

Jun 4, 2025

(And When to Call a Pro Before Bigger Problems Start)

If your HVAC system trips the breaker, it’s more than just a nuisance—it’s a red flag. Whether you’re dealing with a central air conditioner not working, a furnace blowing a fuse, or your heat pump cutting out, tripped breakers are your system’s way of saying, “Something’s wrong.”

Here’s what might be going on—and what you should do about it.


🧠 First, Why Is Your HVAC Tripping the Breaker?

When your HVAC system demands more electricity than the circuit can safely provide, your breaker shuts it down to prevent fires, overheating, or permanent damage. Common causes include:

🔌 1. Dirty Air Filter

Restricted airflow forces your system to overwork, especially the blower motor—drawing more amps than it should.
💡 Fix: Replace the air filter and see if the issue persists.

🌀 2. Low Refrigerant

Low refrigerant makes your AC compressor work harder, potentially overheating and drawing excess current.
💡 Fix: Have refrigerant levels checked and topped off (especially if using R-32 or R-454 refrigerants).

⚙️ 3. Failing Capacitor or Motor

If your fan motor or capacitor is worn or malfunctioning, it may not start properly—causing a breaker trip on startup.
💡 Fix: A technician can test components and replace weak parts.

🌧️ 4. Electrical Short or Loose Wiring

Rodent damage, corrosion, or even moisture can lead to short circuits in the system’s wiring.
💡 Fix: Don’t DIY this—call a licensed HVAC technician.

🔥 5. Dirty or Damaged Coils

Overheating from dirty condenser coils or a blocked unit outside can cause your compressor to trip the breaker.
💡 Fix: Schedule a professional cleaning as part of routine HVAC maintenance.


🛑 What NOT to Do

  • Don’t repeatedly reset the breaker.
    This puts stress on your system and could cause expensive damage.
  • Don’t ignore the issue.
    HVAC problems rarely fix themselves. Left unchecked, what starts as a tripped breaker can lead to burnt wiring, compressor failure, or fire risk.


✅ When to Call Jack Frost Heating and Air Conditioning

If your AC keeps tripping the breaker, it’s time for an inspection. We offer:

  • Emergency HVAC repair

  • 24-hour heating and cooling service

  • Full diagnostics and component testing

  • HVAC electrical inspections

📍 Proudly serving the Knoxville area
📞 Call 865-573-5777
🌐 Schedule at www.jackfrostheatingandair.com