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Neither Sebo nor Miele filter to the true HEPA standard, meaning US DOE-STD-3020-2015. That is the original, true and most stringent HEPA standard. This is the standard that requires a filter to entrain 99.97% of particles 0.3 microns in size, a size chosen to correspond to certain radioactive...

You have to use the airspeed measured by the anemometer in feet per minute and calculate the airflow using the measured inside diameter of each orifice to calculate the surface area in square feet. Do not use the airflow calculated by the anemometer.

Depends on the sensors used and the underlying software. Mark Robers ( Cruchlabs ) has an excellent demonstration comparing the camera based anti collision system on his personal Tesla vs a LIDAR based system on another car. The Tesla hit objects it did not detect where the other car with...

Let me ask a question. Are you reading CFM right off the anemometer, or are you reading airspeed in feet per minute and calculating airflow based on the areas of each opening? Those fan type anemometers base their "airflow" number on the surface area of that fan, which is much larger than the...

My Aerus dealer friend is on vacation and won't be back till next week. I will ask what he saw in terms of vacuum manufacturing at the Bristol plant. Did some more digging and apparently ActivePure expanded production to a new site in Greenville. For giggles I looked at ActivePure air...

You don't know brittle plastic until you have owned some Ryobi made Singer or Kenmore brand vacuums : / They are for display only now. While moving to our new home one of their power nozzles slid off the end of the wand and fell maybe 2 1/2 feet onto deep pile plush carpeting. The bottom half...

There is the problem. Try removing the brush roll, measure the diameter of the opening to the fan, calculate the surface area of that opening and then hold the anemometer right up to the opening in the fan case.

You might also notice that on the Aerus website the Classic and Legacy models are shown with American flags indicating they are US made, which matches what my Aerus dealer friend says he saw on his visit to Bristol last year. The Guardian Platinum, Heavy Duty upright and Veridian cordless stick...

Here is a 2021 press release saying ActivePure was hiring 50 new "associates" and among the jobs are "manufacturing". https://newsroom.trizcom.com/uploads/1-15-2021-Bristol-Hiring-Final.pdf Doesn't sound to me like the Bristol VA plant is closed.

One of the news articles I linked showed some ActivePure / Aerus employees assembling something, not sure what, at the Bristol factory. The Tristar dealer I patronize claims Aerus was casting Tristar metal bodies until 2019 and assembled the last ones in 2022. I bought one of the last ones...

The reason I started testing vacuums is because I would read stuff on vacuum enthusiast websites that didn't match my own impressions of the very same vacuums, especially regarding the claims of the superiority of older vacuums compared to modern ones or the superiority of certain brands. I...

There is a problem with how you are measuring airspeed and / or you are calculating the area of the inlet and exhaust openings incorrectly. May I see a photo of how you are measuring suction airspeed. I don't know Royals as well as I know Kirbys but you need to get the anemometer right in...

If it is any consolation I am trying to save an extraordinarily rare Kenmore Ultravac. The canister bag lid is cracked. I was able to find another Whispertone canister in the same color so that will be ok. But, the bottom half with the model number is broken in one place and cracked in...

Are you measuring suction side cfm right at the opening in the fan case with the nozzle removed? And using the correct area of each orifice when making the calculation? If you are trying to measure airflow under the nozzle you will not get an accurate number.

You can find the "thing" on your exhaust port on the "Patriot Filter Store". It is their "Room Fragrance Air Filter". I couldn't make that up. https://patriotfilterstore.com/collections/all Harold Schoettler was the President of Interstate Engineering until 1989. At the time, in addition...

I don't have it handy but I did see a recent Facebook post for an Aerus company picnic at Bristol VA and it mentioned vacuum operations. My dealer acquaintance was in Bristol last year and said he saw Legacys and Classics being made there. Here is a 2023 newspaper article mentioning that...

These days I would not want to get caught doing that O_O

Here is a tip for the Patriot. You will soon find out why it was in a thrift store cheap. Using the open top Stormy bag it is nearly impossible to change bags without having a bunch of dirt fall back into the vacuum. The lid is angled down towards the front of the body. Dirt piles up on top...

I have the exact same model from Schoettler. It's an early 2000s machine. Power wise they are mild. The Ametek 116884-49 motor is rated at only 356 peak air watts. Same motor used in a Tristar DXL. Mine, after a thorough scrub and fresh filters including a big Medick Aire exhaust filter...

They are making a pile of money making big commercial and industrial air purification equipment. That's their bread an butter now and from what I hear from dealers Aerus can't build the equipment fast enough. No grand conspiracy. Just a changing market that has lost interest in bagged...