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  1. #1
    Join Date
    Jun 2005
    Location
    North West Indiana
    Posts
    2
    I'm thinking about buying the Rotobrush,What do you think? If you don't like it! Why?

  2. #2
    Join Date
    Mar 2005
    Posts
    997
    Roto-Brush can not clean duct not enough suction. You will have to cut more holes to clean even half of what the good guys do. Abatement tech makes good stuff if you are looking for electric equipment

  3. #3
    Join Date
    Nov 2002
    Location
    Central Florida
    Posts
    655
    Run a roto-brush through a five year old peice of flex, typical of brach supply connections and then look at the inside of the flex! If it isn't completely destroyed, it will be damanged.

    Then run it through a peice of hard pipe, and then wipe the pipe with white cloth. You'll find substantial debris on the cloth.

    Using peunmatic systems you will much better results and less damage to flex. However, your also looking at a lot more money for a system that will actually do some cleaning. From what I have seen truck or trailer mount systems are the way to go. Forget the roto-brush.

    This is personal opinion from personal observation.

  4. #4
    Join Date
    Jan 2007
    Posts
    11
    ya i agree i used the rotobrush for about 5 years before i started doing heatin and cooling and that rotobrush is junk don't buy it get a negative air type like the abatement hepa-aire it is a way better machine and does alot better job

  5. #5
    Join Date
    Aug 2004
    Location
    North Richland Hills, Texas
    Posts
    14,914
    If you are getting into duct cleaning, a Rotobrush is one of, if not the least effective ways to clean ductwork.

    Duct cleaning rarely provides any tangible benefit anyway, the whole duct cleaning industry is built on a foundation of deceptive marketing, and very often outright lies.

    A good editorial on the subject with lots of informational links: http://hphaa.com/editorials/index.htm
    If more government is the answer, then it's a really stupid question.

  6. #6
    Things I have learned over the last 10 years about air duct cleaning.
    1. It is a multi-billion dollar industry
    2. All major studies have shown it does not reduce indoor particle counts
    3. There are no studies that show it has any positive effect on allergies. All claims are anecdotal and probably have to do with the amount of money spent.
    4. If the coil is not cleaned, duct cleaning is totally worthless. In many states the only people who can open up a system and clean the coil are licensed HVAC contractors.
    5. Anything using a stiff brush around flex duct is a bad idea.
    6. Any homeowner could vacuum out at least 90% of what is obtained by air duct cleaning by using their vacuum on the first several feet of the returns and the last 18 inches of the supplies.
    7. If dirt has been in the duct for 10 to 20 years, it is not going anywhere. It is happy right where it is - unless someone comes by and messes with it by "cleaning" the duct.
    8. There are two cases where I recommend air duct cleaning - 1. when there is clear evidence that the HVAC system has been contaminated with mold and 2. where there has been remodeling done in a house and the contractors have not sealed the HVAC system. (you can wind up with some pretty nasty "white" dust)

    The short answer on air duct cleaning is: when in doubt, don't do it.

  7. #7
    Oh, and one more thing.

    Dust mites do not live in air ducts!

    (If I see one more advertisement for air duct cleaning showing a dust mite, I think I will puke.)

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