Furnace Direct

Run Capacitor — 440V, Oval — manufacturer part number M12931 .

What this part does
The run capacitor stores and releases the electrical charge that keeps your compressor and condenser fan motor turning. When it weakens, the motor cannot start or hold speed, which is why a failing capacitor is the single most common air-conditioning failure.

Replace this part if

AC hums but the fan does not spin

Outdoor unit trips the breaker on start-up

Capacitor top is domed, bulging, or leaking

AC starts, runs briefly, then shuts off

Fan spins if you push it with a stick, but not on its own

Specifications

Voltage
440V

Case Style
Oval

Manufacturer Part Number
M12931

Condition
New

Sold By
Furnace Direct (Hamlin Mechanical LLC, MN Lic. #128688)

Install difficulty

Easy — about 15 minutes. Tools: Insulated screwdriver, nut driver. Power off at the breaker: yes. Gas shutoff required: no.