Why Is My Ac Surging

If the air conditioning is not performing well, the engine might be surging because the system is undercharged or overcharged. If it is overcharged, the load imposed by the compressor will be excessive. If it is undercharged, the AC pressure switch may be cutting the compressor on and off in rapid succession.

Why does my AC keep surging?

Causes. Power surges can be natural or man-made. A natural source of power surges is lightning, which can cause a sudden spike in the electrical current running through your home if it strikes a power line connected to the house. Man-made power surges can come from the air conditioner itself.

Why does my AC sound like its pulsing?

Air conditioner is making a pulsating noise Pulsating is an alternation between loud and soft sounds coming from your air conditioner. This alternation may have a rhythmic quality to it. … If the sound is more like a metallic whirring, it could be a loose condenser fan or fan blade.