Why Is Your Heat Pump Humming or Buzzing?

A normally operating heat pump produces a soft, recognizable hum while working. If you hear any changes to the loudness or rhythm of the sound, you might have a heat pump issue.  

In this post, the experts at Superior Air discuss why your heat pump is humming or buzzing.

Recent Motor Change

If you’ve recently changed the condenser fan or air handler’s electric motor for a more powerful one, it might emit a slightly louder hum. You can ask your air conditioning installation contractor if the hum levels are consistent with their expected motor noise levels.

Transformer Issues

A heat pump’s transformer might start humming or buzzing. If your heat pump has a low-voltage transformer, the transformer itself might have issues, such as an incorrect operating voltage range or poor wiring. Let a professional inspect this for you to ensure proper repairs and keep you safe.

Loud Humming During Start-Up

A heat pump motor that loudly hums when starting could have several issues. The hum can be due to a poor start capacitor, bearing, or winding. The loud start-up hum might also indicate your motor is reaching the end of its life. A reliable air conditioning maintenance contractor can provide you with an accurate diagnosis and solution.

Accessories and Components

Other sources of noise and strong vibration in heat pumps can be loose motor mounts, worn fan bearings, poorly balanced air handler or compressor fans, and transmitted vibration noises from refrigeration tubings and other metal parts. Furthermore, lost fan weights and bent squirrel-cage fans may also cause humming in the air handler.

Superior Air only provides top-notch heat pump and air conditioning repair and installation services. We have successfully repaired, maintained, and replaced hundreds of ACs and heat pumps in the area. Call us today at (559) 734-2002 or fill out this contact form for a free consultation. We serve clients in Visalia, CA, and nearby areas.