MOUNTOHEPA500 Commercial 500cfm Air Purifier Hepa Air Scrubber Negative Air Machine Roto-Molded (Blue)

PROSWell-made, variable speed blower, easy clean exterior. Accessory plug provides power to additional tools.SUGGESTIONSAir leakage around the first-stage filter lets a lot of dust into the HEPA filter area. You can get more life from your HEPA filter by building a pre-filter extension.I connect a 12" flexible duct, https://www.amazon.com/dp/B0845MSK5W?th=1, to the inlet side of the air cleaner. At the other end I built a frame that has a 12" round take off on the back side. I connect the flex duct to the back side.On the front side, I used 1" aluminum angle to make a slide-in frame to hold a 16 x 16 (400 x 400) air filter.I cut the containment area plastic and spray tack it to the sides of the front. The 16 x 16 furnace filter knocks down most of the dust before it gets to the air cleaner unit. They are quick to change by sliding it out of the frame.NEXT STEPMy next step will be to add an 8" flex duct to the exhaust side of the air cleaner. Typically, I would build a frame that fits in a window and exhaust the air outside. This creates negative air pressure inside your plastic containment area. The negative air pressure keeps dust from leaking out as air has to flow to balance the pressure.INNOVATION SUGGESTIONS FOR MOUNTO1. Add a gasket around the first-stage filter to force all the air flow through the filter.2. Offer an "add-on kit" that includes the frame and 12" duct. Make it the same square dimension as the blower with a handle on top. Include storage for 12" and 8" duct as well as the duct.

The Mounto 500AF Air Scrubber is solidly built and does a great job filtering air at our residence. It's very well built, solid, with nice features like a digital timer that clocks hours of use, plug to seal off filter when not in use, two additional protected outlets for daisy chaining units, and variable speed. The design is well thought out—it's easy to change filters, the long cord wraps around unit for transport/storage, the handle and case are battle-proof. It moves a lot of air and the cleaning power is evident on the outermost filter that is caked in dust from just 150 hours of use. We use ours with three-stage filtration: a pre-filter that catches larger particles like dust, a carbon filter that helps control odors/VOCs like kitchen odors and off-gasses, and a HEPA filter for catching small asbestos particles when doing home improvement projects. It provides some piece of mind that we're reducing environmental hazards from daily living. The only cons are it is fairly loud and heavy, but that come with the territory of having a large high-capacity fan with many filters. I recently had some questions about the changing of filters and was pleasantly surprised to see how quickly and completely my questions were answered by Mounto. It's a great product and backed by solid support. We love our green machine!

This thing is great. It arrived quickly and works just as described. I have been using it for my home remodel and it makes a big difference in clearing up that drywall dust. It isn't overly loud but it sounds like it's working, which I appreciate. It came out of the box ready to go- very easy setup. Just plug in and go.

I highly recommend this air scrubber if you are in need of buying an air scrubber for which ever reason. I paid less for this air scrubber then if I would have rented one for a week and I used it well over a week. It works great and is very easy to use an comes with a HEPA filter. Great value for your money

This thing is amazing! I use it in my house 24/7 because I have 4 dogs, 2 cats, and two males that live in my house. It grabs so much dust that I usually have to change the filter once every two weeks.

We love it. I had trouble finding the prefilter but finally found them. Thanks

Way better solution than renting for 5x the price. Comes with filters. If you need this for more than one project, you’ll need more filters, so budget accordingly. But solid construction and worked well for a mold remediation/drywall project I took on.

Works well