Heat pump making strange noises is discomforting. But what you should really be concerned about is the fact that it might be pointing to a serious problem. It is normal for heat pumps to be noisy in the winters if you regularly perform heating service repair, but they should not be excessively noisy. So, let’s take a look at what might be causing your heat pump to produce strange noises.
Loud Noises During Turning On Or Shut Down
Depending on the type of heat pump installed in your house, a heat pump will produce a certain type of sound while starting up or shutting down. Even though heat pumps usually make a swooshing sound while running, that is normal and there is nothing to be concerned about. It is typically the shifting of the valves that produce the noise.
However, if you notice that the heat pump is producing extremely loud and noticeable noises, you should immediately get it checked. Similarly, heat pumps while shutting down or starting up tend to make weird noises. But these noises are the same each time.
For instance, a heat pump that have a scroll-like compressor usually make some sounds when turning off. They also make some loud noises when they start. But if you notice that the heat pump has become increasingly noisy overtime and some of the sounds you hear are unusual, it is a good idea to investigate the issue.
Loud, Metal-To-Metal Sounds
In some cases, you might notice or hear a noise like metal hitting inside the unit. If you hear this sound, shut down the heat pump and follow it up by checking the fan. This type of noise is usually created by something that has made its way inside the unit and is hitting against the fan or any other moving component. Since heat pumps are used during the winter season, there are high chances of ice buildup on the heat pump creating the problem.
In such a case, you cannot allow the unit to run as the fan or the motor could be easily damaged. Both cases require the attention of a professional. If there is no ice, the fan blades might end up damaging the component they are hitting. For instance, it could be a split tube that is leaking refrigerant and hitting against the spinning fan blades.
Getting the issue resolved will prevent much more expensive repairs later down the road.
Your Heat Pump Is Making Rattling Or Vibration Noises
If you feel your heat pump is vibrating, it could be due to different reasons but they are easier to fix than others. For example, you can try replacing the rubber pads installed under the unit to reduce the noise and vibration.
In case of rattling noises, you should check the cover panels if they are tightly screwed. If that is not the case, you should tighten them immediately. However, if even that does not work, there might be something that has come loose and you can try fixing it if it does not involve serious risk.
Your Heat Pump Is Making Buzzing, Grinding, Or Gurgling Sounds
Apart from the rattling noises, heat pumps also produce buzzing sounds. Such noises are usually created by coils or contactors. Also, if there are gurgling sounds, it might be due to low levels of the refrigerant. In addition to that, heat pumps make a shrieking noise if the motor bearings have become dirty or are simply worn out.
You cannot identify these problems while the unit is turned off. Therefore, you carry a huge risk if you decide to fix the issue while the unit is functioning. Heat pumps can be difficult for those who are not aware of the basics.
If your heat pump is making any of these noises, know that you are not going to be able to fix them on your own. Therefore, contact a professional HVAC technician who will recommend the best repair option.
Final Word
When it comes to identifying the actual problem contributing to strange noises, things can be slightly complicated. This is primarily due to homeowners not being familiar with the unusual signs or noises. As the unit ages, it will start showing signs of aging. In some cases, you can fix them by hiring heat pump repair services McLean, while in others, you will simply need to replace the unit.
