Air Conditioning
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AC Problems and the Noises They Make

Dog Listening With Big Ear

Wentzel’s is always happy to help with any air conditioning issues that may arise. Many times the first indication of what could be going wrong with the air conditioning is the noise the HVAC is making. If you hear any of these noises and feel these problems could be effecting the most important appliance in your house (especially during Florida summers) be sure to call Wentzel’s for a professional repair.

Hissing Noise in AC Closet or near Compressor

Hissing noise tend to indicate a leak in some part of the HVAC unit. The most common sources of the leak are the ductwork or coolant.

Ductwork leak – A damage seal or connection can cause a hissing noise as the air leaks through small cracks. Look closely at all exposed ductwork to see if there is a loose screw or caulk or heat tape that needs to be replaced. 

Coolant Leak – Coolant leaks are a more serious issue. If you cannot find another source of the leak, be sure to call Wentzel’s to have your coolant checked and unit inspected.

Rattling Noise

A rattling noise could be indicative of several types of issues, including derbies, loose parts, or motor issues. 

Debris – One of the easiest type of issues to check is to see if there is debris cluttering the exterior unit. With the unit off, you can remove the cover plates and clear any debris that may have been trapped there. If you see any debris that could be interfering with the blades or internals of the unit, be sure to give Wentzel’s a call. 

Loose parts – Rattling could also be caused by loose parts. Again, you can examine the exertion for loose bolts and tighten the covers on the unit, but if the noise persists please call Wentzel’s for assistance

Motor Problems- If the motor is malfunctioning, this could cause a rattling noise as well. HVAC motors are complex, so if you believe you have a motor issue, please call Wentzel’s for a professional inspection.  

High-pitched Screeching Noise

A screeching noise may indicate worn down or dirty part within the unit.

Worn belt – The AC belt can wear down and become inefficient, or even stop working altogether. A belt replacement can be expensive, so before investing, consult a professional to ensure that is the root of the problem.

Dirty Fan Blades or Rotor – If the inside of the rotor is dirty or worn, the AC unit will no longer work properly. Fixing this requires cleaning the inside of the AC unit, so be sure to contact Wentzel’s for a professional repair.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                

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