Home Repair

  1. Home
  2. Home & Garden
  3. Home Repair

Troubleshooting a Gas Furnace - Furnace Repair

By , About.com Guide

See More About:

6 of 10

PROBLEM: Gas Furnace Has Noisy Operation


Gas Furnace Has Noisy Operation

Possible Causes

  • Higher pitched "squealing" sound may be caused by slipping blower belt or motor or shaft bearings in need of oiling
  • Lower pitched "rumble" sound may be caused by a poorly adjusted pilot light if this problem occurs with the burners off.
  • Lower pitched "rumble" sound may be caused by dirty gas burners if the problem occurs with the burners on.

    Possible Repairs

  • Oil blower motor lubrication ports (usually at each end of shaft) with light weight oil
  • Check for proper belt tension. Belt should depress about 1" at center of span.
  • If too loose, tighten belt.
  • Replace frayed belt.
  • Adjust pilot light
  • Call furnace service technician to have burners adjusted or cleaned.

    • Explore Home Repair

    About.com Special Features

    Holiday Central

    What to eat, where to go, fun things to do and how to save money on the perfect gifts. More >

    Make Your Own Scented Pine Cones

    Bring a little of the fall season in your home with this easy-to-make craft. More >

    Home Repair

    1. Home
    2. Home & Garden
    3. Home Repair
    4. Heating & Cooling Repair
    5. Furnace Repair Problem: Gas Furnace Has Noisy Operation

    ©2009 About.com, a part of The New York Times Company.

    All rights reserved.