Furnace Noise

[mjmondry20]

I recently had a new furnace installed in the basement in my ranch-style home. Everytime the furnace kicks on, the two rooms directly on top of the furnace literally shake. It gets rather noisy. I tried putting R-19 kraft faced insulation in between the floor joists directly on top of and around the furnace in the basement. It seemed to help, but not enough. Anyone have any suggestions?

 

[glennjanie]

Welcome MJMondry:
The new high efficiency frunaces are noisier because of draft motors and several other things. Yours must be an LP gas furnace and is doing some backfiring during the warm-up. Its time to call the installer and speak with him about some adjustments; no matter how noisy it gets it shouldn't shake the rooms above.
Glenn

 

[Quattro]

Another thing to consider is adding an isolator on the supply trunk. It's a 2 or 3 inch piece of heavy reinforced vinyl that separates the sheet metal trunk from the furnace itself...greatly reducing vibrations through the supply system. It's probably not DIY, but could be a relatively quick chore for a professional.

This assumes there isn't anything wrong with the furnace itself.

 

[glennjanie]

Hey MJ:
Quattro is correct and I'm sorry I forgot the vibration isolation in the duct and any HVAC store can make that for you so you can install it.
Glenn