I just built a new HVAC in my new purchased home (previously electricity heat only) with a lot of money but it generated big noise as may be caused by ventilation or Furnace. Especially one bed room above Furnace room. Actually Furnace can be put away from that bed room. Please help what I can since HVAC company reused to take action to fix it.
Talk to your contractor, designer and inspector. Thats if you pulled a permit. If not your out of luck and hire a hvac company to look at solutions