When dealing with a noisy furnace vent, it may help to understand what ventilation does first. If your central heating system has a gas-powered furnace, the resulting oil that heats things needs to be exhausted from the unit. To do this, there is a power outlet with a fan that serves to release the exhaust, and the fan runs continuously while the furnace is running.
The fan will also work sometimes if the furnace is off because you will always have the pilot light on with gas heating. The ventilator part of the breather can be part of an independent unit close to the engine or connected directly to the engine itself. When power ventilation is loud, there are a few things that can cause it. You can simply hire an expert furnace repair service or do it by your self with these easy steps.
Step 1 – Clean dirt on the fan
As the fan moves quickly and quite frequently, there is a tendency to accumulate a lot of dirt and dust. When you also have moisture and condensation, all of this dirt and dust can quickly turn black and sticky. This build-up of goo can cause the fan to start to swing and create instability in the mounting equipment.
As the equipment vibrates, there is movement or noise in the metal ducts that surround it, which will cause the airflow to be irregular. As the accumulated pieces of dirt separate and fall off, this can cause noise when the air passes. To remedy this, take a dry cloth and wipe the blades. You may have to use a degreaser, depending on the thickness of the mud. After cleaning thoroughly, check the fan for noise.
Step 2 – Check for squeaky parts.
Since exhaust fans turn so quickly, they need to be able to move freely and smoothly. The transmission belt must be tightened very firmly, and the transmission wheels must be well aligned with it. If your hearing’s noise is shrill, it may mean that you need to lubricate the fan a little. This is easy to do. Before lubricating the fan, make sure that the belt groove and drive wheel are clean but free of grease or dirt. Then, use a little sewing machine oil as a lubricant for the fan blade shaft.
You should also check for a loose belt and cut it out and replace it with a new fan wheel and motor belt. Please start with the small wheel and put the new belt around it. Then, pull the belt around the large wheel as far as you can and rotate the fan blade slowly until the belt stretches around both wheels.
Step 3 – Check that the fan duct is clean.
Look in the areas behind and in front of the fan to see if particles of dirt or other possible materials block the area. When there is an obstruction, and the air tries to pass through it, it can cause a loud vibration or a rattling sound. Even worse, however, is that an accumulation of dirt can also be sucked into the duct tubes and eventually, the dirt will explode straight into your home. To prevent this from happening, be sure to regularly clean any obstructions in front of or behind the fan duct.