Lennox Furnace Exhaust Fan Noise

All the lights are operating normaly and the noise sounds like a bearing or something is rattling loose.

Lennox furnace exhaust fan noise.

The forced draft motor or induced draft motor helps this process. In this episode of repair and replace vance shows you audio examples and solutions to the most common causes of a noisy furnace. Lennox furnace is noisy or loud 01 blower wheel the blower wheel blows air out of the furnace and through the house. My exhaust line is 2 so according.

Check the blower motor and fan for obstructions or excessive dust and clear them away. That is the blower motor inside the gas furnace that blows the hot air through the hvac system ductwork. If the furnace is too loud. Cleaning the blades is relatively easy.

Anyone know of any common problems with the blowers on these lennox furnices. Check both fan blades to ensure that they are not rubbing again. The vibrating fan can rattle surrounding metal ductwork and cause uneven airflow and occasional sounds as pieces of the buildup break off. Modify my furnace to a 2 pipe direct vent system added a external supply combustion air line per the directions i have from nordyne miller to draw air from the outside.

It only happens when the blower turns on. However there is another thing that can cause noise from a gas furnace. A furnace vibration noise is often caused by an unbalanced blower motor. Just make sure the power is turned off and wipe them with a dry rag.

If your furnace is making a loud buzzing noise it may be the result of an off kilter blower. If the blades aren t rubbing against the housing and the fan motor is still noisy check the fan motor bearings for wear. The furnace is equipped for installation in natural gas ap plications. The blower wheel is attached to the blower motor shaft with a set screw.

It seems to be emanating from where the blower is. The ml193df can be installed as a direct vent or non direct vent gas central furnace. A conversion kit ordered separately is re quired for use in propane lp gas applications. The fan blades might be scraping against the blower housing.

Note in direct vent installations combustion air is taken. Air conditioners have a fan blade in the front and a fan blade in the rear.