How often does the brush need to be changed?
1303249
Every 3 months. I use it twice per day as well as twice per week for the mask.
1303250
I just recently purchased the brush, so I haven't had to change it yet. They recommend changing it every three months.
1485212
Depends where you are. Here, we need to change at least every six months, and every four is better, but we have serious dust problems. Every 6 months is good enough most everywhere else.
1492670
I'm on my third one and have plenty of brushes, one lasted one month and another lasted one year, anyway, water is the issue so if you can avoid rinsing it will probably last longer.
1103734
We vacuum about once a week on average (2000 sqft). The bag-change indicator never seems to indicate that a bag change is needed, so we just change the bag every couple months or so.
1432958
Not sure what "inside" you mean, but the cavity between the body and the screw on brush should be rinsed out regularly and left to dry separately. The brush is to be changed every 3 months or so.
336240
The suggested replacement rate is every six months, but I replace it every three. Using the special covers that supposedly clean the brush while not in use, I find that black spots appear in the brush head if I don't switch it out after about 3 months.
2019796
Sonicare says replace every 6 months maximum. Depending how often you brush, the force you use against your teeth, and the number of people using the brush (for those who like to share), it varies. I've been replacing mine every six months or so. A two pack lasts a year and is generally cheaper to buy than a single brush head. Don't be afraid to rinse the brush head under water to clean it. Let it dry before you use again. Never immerse the handle/body in water, however.
1940086
We recommend changing the filter every 6 to 8 months. However, the filter life will depend upon the environment in which it is used.
1961407
I don't know. I just know that the brush lasts a long time. I have cleaned it with mild soap & warm water & then let it dry. This is the only brush my family uses.
1436646
I've had it for a while now and I use it about 2 to 3 times per day. So far no bristles have fallen off and from the way my brush looks I doubt the bristles would ever really "fall off". If anything I think the bristles would only come out if you purposely violently smashed the brush around till the surrounding area breaks or literally yank out one of the bristles with a tool of some kind.
2279323
It recommends every 3 months but I vacuum mine out once a week. I have 3 cats. so I can usually get away with every 4-5 months before having to change it. It runs 24/7.
1064362
Have used brush for many years purchased a second one for travel but have not replaced a battery yet
404045
I change mine every 2-3 years, depending how much you use it. I use it about once a month for the large kitchen area.
714248
The owner's manual says replace every year for heavy use, every 2 years for normal use and every three years for light use. I use it only at night as opposed to the recommended constant 24 hour condinuous use, so I think I probably waited 4 years, which was much too long as it was really dirty.
716670
That is a good question. I have had mine for over 9 months--due to being a personal chef--I wash a LOT of dishes/pots/pans by hand. I still haven't needed to replace the brush head. That being said, I have looked for replacements & there isn't any. Here is probably why--as best I can see how it is constructed, it would not be as efficient with a replaceable brush. I have had many other brands--& ALL have leaked out soap---bristles couldn't withstand high temps of pan or HOT water. Being that this one lasted so far 9 mths & still going--for the $9 bucks I paid--I say it's still worth it. I will get a new one when this one is totally worn out--but it just keeps on going on strong--- That is a good question. I have had mine for over 9 months--due to being a personal chef--I wash a LOT of dishes/pots/pans by hand. I still haven't needed to replace the brush head. That being said, I have looked for replacements & there isn't any. Here is probably why--as best I can see how it is constructed, it would not be as efficient with a replaceable brush. I have had many other brands--& ALL have leaked out soap---bristles couldn't withstand high temps of pan or HOT water. Being that this one lasted so far 9 mths & still going--for the $9 bucks I paid--I say it's still worth it. I... » Read More That is a good question. I have had mine for over 9 months--due to being a personal chef--I wash a LOT of dishes/pots/pans by hand. I still haven't needed to replace the brush head. That being said, I have looked for replacements & there isn't any. Here is probably why--as best I can see how it is constructed, it would not be as efficient with a replaceable brush. I have had many other brands--& ALL have leaked out soap---bristles couldn't withstand high temps of pan or HOT water. Being that this one lasted so far 9 mths & still going--for the $9 bucks I paid--I say it's still worth it. I will get a new one when this one is totally worn out--but it just keeps on going on strong--- « Show Less
962861
Sorry I can't answer that, because my brush didn't last long enough to have me worry about replacing it! Hope that helps you!
1732842
I've used about ten times, & after the third time, it started loosing hairs, I haven't seen it loose anymore hairs as of lately, I like the brush.