Is it normal for a new furnace to smell?

Protective Coating





When your furnace runs for the first couple of times, the coating may give off a burning smell. This is normal and the smell should dissipate the more your furnace runs. To be on the safe side, you’ll want to contact a heating and cooling company if the smell continues.

Why does my furnace sound like it’s vibrating?

It’s most likely that the cause of vibration is an unsecured blower fan or motor. Sometimes, the blower motor can shake itself loose from the mounts that hold it in place, creating a loud vibrating sound as it runs. Contact a furnace expert to reconnect the fan or motor to the mounts that keep it in place.

How long should a new furnace smell?

New System Odors

Upon first use, new furnaces might cause an unpleasant odor due to the protective oil coating on the inside. Much like a new oven, this protective coating must burn off. This smell should last for a day or two at most and doesn’t point to a bigger issue.

How do you fix a vibrating furnace?





Loose parts on your furnace’s housing can cause an annoying vibration sound when the furnace is running. You can fix this problem by carefully tightening all bolts and screws on the exterior of your furnace. Check access panels to make sure they are closing properly and sitting in their frame correctly.

Why does my furnace smell like it’s burning?

As your furnace heats back up it is burning this dust off, hence the burning smell. This is normal and is not considered to be a safety hazard. The smell should go away after a few hours once the furnace burns all the dust away.

Why does my new furnace smell like burning plastic?

If the air is not moving through your new furnace, it will start to smell like burning plastic. This can be due to a low setting on your thermostat or inadequate ventilation in the area where you have installed the unit.

Should a furnace vibrate?

Constantly subjected to moving air, their connections may loosen or disconnect entirely. Once a heating cycle begins and air resumes circulation through the ducts, you may notice a vibration when the furnace starts – this is the noise produced as the metal components vibrate against each other.

Is it normal for furnace to shake?



If you hear a loud house-shaking rumbling throughout your house when the furnace completes one of its heating cycles, this is most likely due to oil that continues to burn in your combustion chamber after the burners shut off. Rumbling can also indicate a problem with your burners, flame sensor, and pilot light.

What does it mean if your furnace is rattling?

Rattling Sounds

A rattling sound coming from the furnace most likely means there’s a loose panel or door. Look to see if the panels and doors outside your furnace are firmly fixed, and tighten any loose screws to resolve the problem. If that doesn’t solve the problem, it could indicate a loose part.

Why is my house vibrating?



Wood-framed floors are the most typical culprit of floor vibrations due to small deflections up and down as the joists are loaded and unloaded. While this type of floor is designed to support people, furniture, and large appliances, certain movements can cause a floor to vibrate over time.

How do I make my furnace blower quieter?

How to Quiet a Noisy Furnace Blower: 9 Easy Ways

  1. Adjust Furnace Fan Speed.
  2. Clean Furnace Blower Fan.
  3. Replace Furnace Blower Bearings.
  4. Check Motor Mount for Loose Connections.
  5. Tighten the Set Screw.
  6. Change The Belt Drive.
  7. Try Sound Insulation Solutions.
  8. Replace The Motor or Fan Blade.

How do you prevent blower air handler motor from vibrating HVAC?

Install a duct “skirt” “canvas duct connector” so that vibrations don’t shake the structure as much. You can try to “rebalance” your flywheel. Or replace it. Or replace it and the motor.

What are some probable causes of noise and vibration?

These potential sources of noise and vibration include heating, ventilation and air conditioning (HVAC) systems; pumps and motors; generators; elevators, garbage chutes and compacters; garage doors and the like.

Why do my air vents vibrate?



Vibrating Sounds

A sound of vibrating or shacking of the duct walls normally occurs due to the blockage of the return side airflow. This usually happens due to a clogged filter that results in a drop in the air pressure that makes the duct walls vibrate and shake.

How do you fix a vibrating air vent?

Open any closed dampers or vents to stop your return vent from making noise. Objects blocking vents: Furniture and other items placed in front of the return vent can cause high-pitched noises. Keep the return vent clear to prevent this from happening.

When your ducts are vibrating or humming?

Loose ductwork.



If the loud buzzing sound seems to come from the duct system and not the furnace, loose connections may be to blame. As air is forced through the HVAC system, the pressure can cause loose sections of sheet metal to vibrate against each other.

Why is my furnace so loud all of a sudden?

In order to work properly and efficiently, your furnace needs a proper mixture of air and gas. If you have too much air and not enough gas, gas can build up resulting in a loud booming sound.

Why is my brand new furnace so loud?

Your New System Works Correctly

The most likely reason why your new furnace is noisier than your old furnace is because your new furnace is more efficient than your old furnace. The sound that you are hearing could simply be more airflow.

Are new furnaces quieter?

Most heating systems manufactured today are quieter than those produced in past years. But there is still a great difference in the sound levels of products on the market today.