Stranger Sounds

Stranger Sounds – What Is Your HVAC System Telling You?

Listen up! Your HVAC system may be trying to tell you something. Have you been hearing any strange sounds coming from your home lately? Listen to what your system has to say, especially when it comes to foreign bangs, rattles, and pops. The following are the most common HVAC sounds to listen for.


Rattling or rumbling sounds can sometimes be heard in the upside down, but they can also come from your HVAC system.  This is likely a result of something stuck in the register. Sometimes small toys, pens, screws, nails, etc. fall into the register and jostle as the HVAC system is turned on. If the debris is easily removable, remove it. Otherwise, it is advised to pass this job off to your local HVAC professional. In other cases, this could be a sign of an older, deteriorating system. Contact us today if you feel your HVAC system is producing a concerning, rattling noise.


It is not uncommon for metal ductwork to expand and contract as the HVAC system turns on and off. A popping sound could stem from the ductwork itself, or the hardware that holds it together. This sound can usually be remedied by applying bits of foam or rubber to troublesome areas to help reduce the noise. You can even go as far as insulating the system. We highly recommend calling us before any work is done at (425) 689-7778.


Generally, a humming sound is not serious. However, it still signals something could be inside your HVAC system where it does not belong. Sometimes loose parts or refrigerant piping for the air conditioner can cause a vibration. If this goes unchecked, it can lead to more serious problems. If you hear a humming sound, we suggest you call a professional.


A bang, just like it sounds, is not a safe HVAC sound to hear. A bang could be a loose part, or another potentially serious issue that could damage your equipment, and should be diagnosed by a certified HVAC technician. To prevent a bang altogether, enroll in one of our Guardian Maintenance Plans that ensures the longevity of your HVAC equipment. This will ultimately protect you, your family, and your wallet from future expensive HVAC repairs.


If you begin to hear any of the HVAC sounds listed above, it would be wise to contact us online or give us a call. Our certified and trained technicians at Bob’s Heating can help diagnose and resolve HVAC issues. Plus, sometimes even the most troublesome HVAC issues fall silent and go virtually undetected. Save yourself from a headache and give us a call. We also offer Guardian Maintenance Plans that ensure your HVAC system is in tip-top shape all year round. Call us at (425) 689-7778 or contact us online to diagnose those stranger sounds you hear before it is too late.