What to Ask a Customer Whose AC Keeps Tripping the Breaker Before Sending a Tech

First, the safety questions

• Does anyone smell burning or see smoke, sparks or scorch marks at the electrical panel, the indoor unit or the outdoor unit? If yes: leave the breaker off, stay away from it, and call 911 if there is smoke or flame.
• Is the panel cover or the breaker itself hot to the touch, or buzzing? If yes, do not touch it again and tell the tech before they arrive.
• How many times has the breaker been reset today? If it is more than once, leave it off now. Do not keep resetting it.
• Is anyone in the home elderly, an infant, pregnant, or on medical equipment, and how hot is it inside right now? If someone feels dizzy, confused or sick from the heat, call 911 first, then book the visit.

Narrowing it down: when does it trip?

• Does it trip the moment the AC starts, after it runs for a while, or at random? Those point to different problems.
• Is it the AC breaker only, or are other breakers tripping too? Other circuits tripping means it may be an electrical problem, not the AC.
• Was there a storm, a power outage or a surge just before it started?
• Did the outdoor unit make a new noise before it tripped: a hum, a click, a grinding or a loud bang?
• Is the outdoor fan turning when the unit is on, or is it humming without spinning?
• When was the filter last changed? If it is gray and clogged, a new one is safe to put in.
• Has anyone worked on the system or the panel recently: a repair, a new circuit, a generator, yard work near the outdoor unit?

What the tech needs to know

• Central air, a heat pump, or a ductless unit on the wall, and the brand if they can read it.
• The age of the system, or a photo of the label on the outdoor unit so the tech can read the model and serial number.
• Which breaker trips, and a photo of the panel with the door open and the cover left on.
• The timing: at startup, after running, or at random, and how many times it has tripped.
• Where the indoor unit and the panel are: attic, closet, basement, garage, and whether they are easy to reach.
• Whether any other circuits have been tripping, so the tech knows if an electrician should be part of the visit.

How it sounds on the phone

The three ways this goes wrong

• Treating it as a nuisance and not asking about burning smells, scorch marks or a hot panel. Those questions come first, every time.
• Talking the customer through resetting the breaker again and again. Once is the limit, then it stays off until the tech arrives.
• Not asking when it trips and whether other circuits trip too, so the tech arrives without the right part or the job needed an electrician as well.

An AC that keeps tripping the breaker is safety first, then one reset at most, then when it trips and the details. Ask in that order, and the household stays safe and the tech arrives ready to fix it on the first visit.