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(973) 887-1334
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    - Jeff G.
  • We have always been satisfied, as well as, impressed by the responsive, competent, and courteous service by Russo Brothers and…

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$100 off $1,000 Purchase & $250 off $2,000 Purchase

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Restrictions apply. Unit must be under 7 years old and easily accessible for all elements of the inspection to be completed. Additional units are extra. Offer expires 7/31/2024. 
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Scary HVAC Noises: Witch Noises to Worry About

Woman standing in front of thermostat.

Ghosts and goblins may visit your front door this Halloween, but it’s the strange noises coming from your HVAC system that are most frightful! HVAC issues can be frustrating and expensive, so it’s important that homeowners know what to look for and when to schedule maintenance or repairs.

Check out this list of scary HVAC noises and what they mean.


Trick-or-treaters knock on your front door for treats, but it’s no treat if there’s knocking coming from your HVAC system. A knocking or banging sound can mean your HVAC system has a bent blade. Unbalanced or bent fans can do additional damage to your entire HVAC system and should be fixed immediately by an HVAC professional.


A high-pitched squealing sound can be the sound of an HVAC motor that needs lubrication. If it isn’t fixed right away, you could have a big fright on your hands. Get an expert to confirm the issue and consider a maintenance program for your furnace, boiler, or heat pump that will ensure these components are ready for duty.


Dirty filters can make it sound like there’s a ghost in your walls. The sound is caused by air trying to rush through blocked filters. A simple swap for clean filters can put that ghostly noise in the grave once and for all.


A buzzing sound from your unit can be caused by a few different things, from an electrical issue to a failing condenser fan. A professional technician can determine what the buzz is all about.


A repetitive clicking noise can mean there’s an issue with the HVAC relay process or thermostat, which is the command center for the system. If you hear a simple soft clicking sound intermittently, that sound is your thermostat telling your HVAC unit to kick in.


If your heating system is just firing up for the first time, your ductwork might make a banging noise as the cold metal ductwork expands from the warm air passing through. The sound should resolve on its own as the system continues to push warm air through. If the sound persists or comes from a different area, it’s time to call an HVAC professional.

Choose Russo Bros. & Co. for HVAC Services in Northern New Jersey

Halloween is full of scary sounds. However, you don’t need to stress about the frightful sounds coming from your HVAC system. The professionals at Russo Bros. & Co. can make sure your HVAC system doesn’t leave you in the cold this fall and winter.

Call us at (973) 887-1334 today to request HVAC maintenance or repair services in Essex, Morris, Union, or Passaic County.