I am hearing a little bit of squealing noise when running the ventilation fan in my house.

This is actually quite common and is a combination of water pressure and the size of the tube in the inlet solenoid, try turning the fill tap down a little and you should notice a change in the squeal noise, in most cases just changing the water supply pressure fixes this but you may also have a failing inlet solenoid that will need replacing at some time in the near future.

Squealing from brakes when applied (and sometimes even when not) is a common issue with many vehicles. There are a number of reasons for it, most often it is the brake shoes/pads themselves. Most manufacturers today install ceramic brake pads as OEM parts, but due to their cost, most drivers opt for semi-metallic pads when replacing them. Most manufacturers recommend anti-squeal shims and/or compound be applied to brake pads for disc systems, but they are often ignored and not installed. Older, sticky calipers can also cause poor release of brake pads, resulting in drag and noise. Lastly, worn, warped, and thin rotors can add to noise issues. Having well serviced, quality brake parts and using proper installation techniques will usually remedy brake noise issues. Just as a side note, residual dirt and grease from the installation itself can cause noisy brakes for a few days/weeks after first install until it is worn off and the pads break in. If you have issue beyond the first two weeks, and you have had them installed professionally, take it back and have them verify that the pads were installed properly.

If it's a roaring noise, the tub bearing is probably wearing out. Spin the tub a little with your hand, if you hear a little of the roar, that's it.

Hello

When an appliance such as a dishwasher starts making a new noise, you need to isolate the cause of the noise so that you know whether or not it is damaging the machine. Several things can cause a noisy dishwasher.

Motor

Dishwashers are driven by an internal motor that gets quite noisy when defective. The problem occurs when a seal breaks down and allows water to access the bearings in the motor, removing the grease needed for proper lubrication and creating a loud motor noise when the dishwasher runs. The seal or bearings need to be replaced in this situation quickly or more extensive damage to the motor may occur.

Inlet Valve

If the inlet valve on your dishwasher is broken or breaking, you will hear a distinctive thumping or clattering noise whenever a load is run. A thumping noise doesn't always indicate this problem, however, depending on when you hear it. If you hear a noise like this when the water is filling up the dishwasher at the start of the cycle, the noise likely points to an inlet valve problem.

Squealing

A high-pitched squealing noise is an indication that something is wrong with the fan. Fan bearings that are worn out indicate that the fan apparatus needs to be replaced. If the noise you're hearing is in fact coming from the fan, it will only occur when the dishwasher is drying the dishes. Dishwashers use a fan to generate and distribute heat to dry the dishes quickly.

Minor Concerns

Sometimes even a minor concern can cause a great deal of noise. The thing to watch for is whether or not the noise repeats itself on multiple loads. A loud noise on a single load that doesn't repeat could be caused by things like a loose utensil or small implement rattling around loose in the dishwasher. Also inspect the bottom of your dishwasher. Hardened bits of old food can become rock hard under the heat in the dishwasher and cause noise when the unit runs.

What kind of noise ae you hearing ????,,,

If it is a screeching/squealing sound this might be the fan belt, which when it gets loose, can slip and squeal on the pulleys. It should just ned to retensioned or at worst case, replaced.....

If it is some other noise, please let me know and I will hope to identify it for you.

Check and see if the Brake Pads were re-installed with all the hardware, ie, Anti-Rattle Clips, shims etc. if your pads are not secure in the Calipers it will cause the pads to rattle when you are driving in effect causing your brakes to make weird noises, ie, groaning, squealing, rattling.

Sounds like the defrost timer doing its job but with loud efforts. GE is known for its different sounds some clanks to clicks to popping. Thank God for good hearing but curse GE for its poor noise reduction efforts. This is why GE is cheaper than its other competitors. They cut corners welcome to the world of GE. BB

Have you fixed this problem? I also have a Hoover condenser dryer, only a few months old, and has started to make a squeal/whistle. I'm thinking it might be the front fan needing some WD40, OR too much water vapour around the belt that moves the drum causing the sounds.

If it's the fan, lubricating the shaft and its components should fix the problem, if a wet fan then I'd think maybe fully cleaning the condenser filter, reservoir ect will fix the problem.

The problem seems to go away though "mostly" 15 or so minutes after you start the dryer, so that makes me think ones it gets warm something is expanding to allow more "give" so maybe the belt.

Check the door gasket seal.
Open the door for a few seconds and then close.
Immediately open the door again, and, if sealing properly, it should take more pulling force to open the door.