Heat pumps typically make noise while they transfer warmth throughout your home. However, abnormally loud or harsh sounds may indicate a mechanical or electrical issue. Here’s how trained HVAC contractors will say you should handle this situation.

What Causes a Noisy Heat Pump?

Abnormal noises coming from your heat pump can result from a variety of factors. Typically, the best way to diagnose the issue is to note the tonal qualities of the sound:

• Grinding: If you hear a sound like metal grating against metal, there may be a loose component inside your heat pump. Alternatively, the parts may be dirty or lack proper lubrication.
• Squealing: According to most HVAC contractors, a long, high-pitched cry suggests that the pump’s blower belt needs to be replaced. In more serious cases, it may indicate that the motor is failing.
• Buzzing: Your heat pump will make this sound even when it’s operating normally. However, if the system buzzes but does not run or if it buzzes for longer than the standard defrost cycle, there may be a mechanical issue. It could suggest that the pump has a faulty capacitor or that one of the system’s moving parts is jammed.
• Gurgling: A bubbling or gurgling sound often points to a leak or clog in the condensate drain—a component that removes water and condensation from the heat pump. It can also mean the system has a low refrigerant charge.  
• Clicking: Like buzzing, clicking is a normal sound to hear when your system starts or shuts down. Rapid clicks, however, may indicate an electrical issue.

What Should You Do About Your Noisy Pump?  

If your heat pump is making any of these worrisome noises, you should contact your HVAC contractor immediately. Not only can these sounds be unpleasant to the ears, but they can also indicate major damage. Ignoring the signs may then lead to decreased comfort as well as extensive and costly repairs. Fortunately, a trained HVAC contractor can diagnose and fix the problem before it becomes too serious.

For reliable HVAC installation and repair services in southern Wisconsin, look no further than Pointon Heating & Air Conditioning. With 42 years in business, these HVAC contractors have the experience and expertise needed to keep your system running quietly and smoothly. Visit them online to learn more about their comprehensive offerings. To schedule an appointment, call their Baraboo location at (608) 356-4177 or their Portage location at (608) 745-4616.