The vacuum is hard to manuever; too much suction sound for less suction quality; I've cleaned the unit and replaced the filter. Is it the belt?

That is possible, also check for a.m. exhaust filter off the motor. Usually a very fine filter to stop dust that gets past the bag. May just need to open it up and clean out the accumulated debris.

if there's no blockages and filters all OK it's probably the suction fan that as worn down and not creating as much suction..

see this causes and fix it. God bless you
Air filter:
If the vacuum cleaner won't pick up dirt and has no suction the air filter might be clogged. Remove the filter and either clean or replace it as needed.
Exhaust Filter If the vacuum cleaner won't pick up and has no suction the exhaust filter might be clogged. Remove and clean the filter, replace it if its torn or damaged.


Vacuum Hose If the vacuum cleaner won't pick up and has no suction the vacuum hose might be clogged. Remove the hose from the vacuum cleaner, stretch it out straight, shine a bright flashlight in one end and try to see light through it. If no light can be seen, use something to run through the hose and free up the obstruction.
Vacuum Bag If the vacuum cleaner won't pick up and has no suction the vacuum bag might be full. Clean or replace the bag as recommended by the manufacturer.

Dust Cup AssemblyIf the vacuum cleaner won't pick up and has no suction the dust cup assembly might not be installed tightly, or it might be cracked or broken. The dust cup must seal tightly in order to produce the right amount of suction. If it is cracked or broken, replace it. Most glues and adhesives will not successfully seal the crack.
Blower Wheel If the vacuum cleaner won't pick up and there is no suction, the blower wheel might be jammed or broken. Check the blower wheel to be certain it turns freely. If it doesn't, check to see if there is anything rubbing against it. If not, but it's hard to turn, the motor is most likely the problem.

the hose can clog up insid where you cant see it my husband takes it off and runs water thru it to flush stuff out lets it dry then reconnects it

Cleaning filters on a bagless vacuum helps but filters should be replaced frequently, as often as every 3 to 6 months on some vacuums. Foam filters aren't as critical to replace because the pores are very large (which also means they don't filter out the small particles) so they don't clog as easily but paper filters have much tighter pores which become clogged and restrict the airflow. Cleaning paper style filters with water which can pack the fine dust into the pores clogging the airflow even more.
I recommend replacing filters st least onceor twice per year and cleaning them after each use for best performance and longer vacuum life. Blowing the dust out with an air compressor is my preferred method.
Changing filters frequently on a bagged vacuum isn't as critical because the bag collects most of the fine dust, dirt and gunk. The surface area of a bag is much greater than that of a filter so a bag is less likely to get clogged than a filter. Most homeowners change the bag once per month which keeps the air flowing smoothly.

Hi there,

I'm sorry to hear you're having difficulties with your DC24. From what you've described, it sounds as if the suction relief valve is activating - this is likely to be due to a blockage in the machine, or because the filters need washing.

The easiest way to locate and remove any blockages is to follow the simple steps shown in our online support guide:

http://www.dyson.com/support/help.asp?article=1120&product=DC24-ALLFLOORS

DC24 has two filters, both of which need washing at least once a month, as shown in the video below. Use cold water without detergent, and allow at least 24 hours for them to dry completely before replacing them.

I'm confident that following these steps will resolve your issue. However, if you'd like any further assistance, call us free on 0800 298 0298 (UK), or 1866MYDYSON (US).

Kind regards,

Jack
Dyson Online Customer Support

Hi there,

When the cleaner is standing in the upright position, it's engineered to divert suction automatically from the cleaner head to the hose. The correct way to use the hose, wand and dusting tools is shown in the user guide:

http://media.dyson.com/downloads/us/floorcare/manuals/dc07_opmanual_usa.pdf

If there doesn't seem to be any suction coming through the hose when the cleaner is standing upright, you may need to check the machine for blockages. The easiest way to do this is to follow the steps shown in our online support guide:

http://www.dyson.com/support/help.asp?article=4&product=DC07-SY-HEPA_US

It's also a good idea to give the filter a wash, as demonstrated in the video below. Under normal use, this should be done at least once every 3-6 months. Use cold water without any detergents, and always make sure the filter is totally dry before replacing it - this may take up to 24 hours.

By clearing any obstructions and washing the filter, you should be able to resolve your issue without further assistance. However, if you've tried this and are still concerned, it's probably best if you get in touch with us directly. You can call us free on 08002980298 (UK), or 1866MYDYSON (US). One of our experts will be happy to run through some troubleshooting over the phone with you recommend the best course of action.

Kind regards,

Jack
Dyson Online Customer Support

Hi there,

From what you've described, it sounds as though you may need to wash the filter. This video guide from the Support section of our website shows the correct way to do this:

http://www.dyson.com/support/help.asp?article=1463&product=DC17-ANIMAL

Although you've found no blockages, it's definitely worth checking again to ensure nothing has been missed. This simple step-by-step walkthrough shows all the areas you should inspect:

http://www.dyson.com/support/help.asp?article=954&product=DC17-ANIMAL

If you've followed these steps and are still experiencing difficulties, please get in touch with us free on 1866MYDYSON, or email [email protected]. One of our experts will run through some troubleshooting over the phone, and provide the assistance you need.

Kind regards,

Jack
Dyson Customer Service

Hello Can,

Go through this guide to help find the issue www.builtinvacuum.com/flowchrt.html. You should have suction without a filter. The bottom is on the unit, right? It needs to be air tight.

Check that there is nothing blocking the hose and that there are no obstructions around any of the filters, clean and replace filters too if possible. If you still find you have less than optimum suction , you may need to replace your motor. But it sounds like there may be a blockage or an air leakage somewhere in the unit.Good luck.