It is making a whistling sound and is losing suction

The high pitched whistle that you are hearing from your Rigid shop vac with a long hose may be due to several reasons. Here are some possible causes:

1. Airflow restriction: When you use a longer hose with your shop vac, it increases the airflow resistance, which can cause a whistling noise. This is because the motor has to work harder to maintain suction, and the increased resistance can cause turbulence in the airflow, creating the whistling sound.
2. Hose size: The size of the hose can also affect the whistling noise. A smaller diameter hose can increase airflow resistance, which can cause the same issue as a longer hose.
3. Clogs or blockages: If there are clogs or blockages in the hose, this can also cause the whistling noise. Check the hose and attachments for any obstructions, and remove them if necessary.
4. Vacuum motor issue: In some cases, the whistling noise may be due to a problem with the vacuum motor itself. This could be caused by a damaged impeller, a loose fan blade, or other issues with the motor.

To fix the issue, you can try the following:

1. Shorten the hose: If possible, try using a shorter hose to see if the whistling noise goes away. A shorter hose will reduce the airflow resistance and may help to eliminate the noise.
2. Check for blockages: Inspect the hose and attachments for any clogs or blockages. Remove any obstructions that you find.
3. Clean or replace the filter: If the vacuum filter is dirty, this can cause airflow resistance and make the motor work harder, leading to the whistling noise. Clean or replace the filter as necessary.
4. Check the vacuum motor: If none of the above solutions work, you may need to inspect the vacuum motor for any issues. If you are not comfortable doing this yourself, you can take the shop vac to a professional for repair.

I'm guessing you have a blockage, probably very little suction as well.

there may be a small cut in the tube or there is something stuck restricting the suction check all hoses

When you hear the whistling noise, means there is a clog either in the hose itself, or in the elbow where it goes in or from where the bottom tube bends and goes up. To clean hose, remove it, stick on top of broom/mop handle and push all the way down to clear out any debris on it.

It sounds like it's draging on the motor Also heating up the thermister switch. I would recomend having this look at from a vacuum repair shop ask for free estimates if you call around. save some $$$

you have a clog somewhere and air is barely passing by clog causing the whisle sound

Sometimes mine "wand" has no suction too. . . Make sure the vacumn column is clicked into the "standing" position, don't have it at an angle. Also you may have to play with the settings on the bottom part AND the power button together. I think this vacumn sucks (pardon the pun) mine turns off after 10 minutes of use, then I let it sit for an hour and then it'll start again. POS!

I think this unit has a utility valve on the front. If so, do you have good suction at this valve? If not, disconnect the inlet piping and check the suction directly from the inlet. Make sure the utility valve is closed while checking the suction on the inlet. If you have good suction, you have an open pipe or valve somewhere in the house. If you have any vacpans, check these first. Next, turn the unit on and walk through the house and listen for air whistling. If you do not have good suction from the inlet at the unit with the utility valve closed, replace your bag and look for a secondary filter that may be plugged. Good Luck!

1. i cleaned out my fanton and no suction in wand and still whistles

If it sounds like the vacuum motor is running then you have a clog. Clean out any hoses where a clog may be. If the vacuum motor does not sound like it is running then you will need to take it to a vacuum repair shop. Or you need to make sure the canister is attached correctly. If the canister is not fitting correctly then you will lose suction. Hope this helps, post back.