My vacuum cleaner is not picking things up well. I have a new bag in it. I'm wondering if it needs a new belt, it hasn't had a new one since we bought it about 4 years ago. How often do vacuums need a new belt? Is there another part of the vacuum that may need cleaned or repaired to help it work better?
Aha! Here I can help. Regular user replaceable vacuum belts should be checked periodically (every few months) and probably replaced roughly every six months to a year depending upon the amount of use the machine gets. (Special belts, cogged or made of long-lasting material may require less frequent checks and changing.)
As regards standard rubber vacuum belts, the ideal is to change them before they need changing -- just like the tires on our cars.
The good news is that vacuum belt replacement is far less expensive deal than getting new tires.
My best advice is this, take the machine in to local vacuum repair shop and have someone look it over and give it a tune-up/cleaning. As you haven't checked the belt in four years, I kind of guess you may not have changed your machines internal or exhaust filters. That too might be contributing to the problem.
After a local vac person has checked out and serviced your machine, which shouldn't cost much, have them carefully explain what they found. Also, look for your vacuum's user guide. If you've lost or misplaced it many vac makers still provide manuals for previous models by way of download.
A regular maintenance check is not a big to-do and will help keep your machine running at its best. Take a quick look at internal and exhaust filters after every couple of bag changes and don't allow bags to pack all the way full with dirt. By the way, what brand and model do you have?
Best,
Venson