Gas Furnace Making A Rattling Noise

A Gas furnace making a ratting noise is most likely from loose panels or damaged blower motor mounts. Causes may also be a broken blower motor or a cracked heat exchanger. Check for loose panels or other loose parts, if the problem persists call a service technician. Repairs are recommended right away as this problem could lead to greater damage to your motor. Estimated costs for repair including parts, labor and service fees to repair the motor mounts are $150 - $400.

Severity

Moderate

What It Means

The motor mounts on the blower motor are broken and need to be replaced. If repairs aren't made further damage to the motor may result.

Safe To Use

This problem does not cause any immediate danger but if unattedned it may cause further damage to your furnace.

Estimated Repair Costs (including service fees)

• Replace Motor Mounts(Professional):$150 – $400
• Replace Blower Motor(Professional):$400 – $900
• Replace Heat Exchanger(Professional):$1000 – $3000

Causes

Causes include broken motor mounts on the blowe, broken blower motor, or cracked heat exchanger.

Repair vs Replace

You should repair your furnace for this problem if you just need to replace the motor mounts, or blower motor. It is recommended to replace the furnace if your heat exchanger is cracked.

Prevention

Keep any debris from the blower fan, keep all screws and panels tight, change your air filters every three months and schedule annual maintenance.