
An air conditioner that trips its breaker every time it attempts to start is more than just an inconvenience, it's a sign of an underlying electrical issue that needs professional attention. Old Glory Air Conditioning and Heating explains the most common causes behind this frustrating problem.
One of the most common causes of a breaker tripping specifically when the AC starts is a compressor that's drawing too much current during startup, often due to internal wear or a developing mechanical issue within the compressor itself.
The start capacitor helps provide the initial burst of energy needed to get your compressor and fan motor running. A failing capacitor can cause the motor to draw excessive current during startup, which may be enough to trip the breaker.
Wiring connections that have become loose, corroded, or damaged over time can create electrical resistance that leads to overheating and breaker trips, particularly during the higher current draw that occurs when the system first starts.
In some cases, the breaker itself may be undersized for your system's electrical needs, or may have simply worn out over time and become more sensitive than it should be, tripping even when the AC's electrical draw is within normal range.
A short circuit somewhere within the air conditioning system's wiring can cause immediate and repeated breaker trips, and this type of issue requires prompt professional diagnosis to identify the exact location of the short.
While it might be tempting to simply keep resetting the breaker and hoping the problem resolves itself, repeatedly doing so without addressing the underlying cause can potentially cause further damage to your system's electrical components, or in more serious cases, create a fire risk.
Because several different issues can cause a breaker to trip, ranging from a simple capacitor replacement to a more involved electrical problem, a qualified technician needs to properly diagnose the specific cause before any repair can be safely completed.
If your AC is tripping the breaker, it's best to leave the system off and avoid repeatedly resetting the breaker until a professional has had the chance to inspect and diagnose the issue.

If your air conditioner keeps tripping the breaker, our technicians can safely diagnose the underlying cause and get your system running reliably and safely again.