I was fortunate to have found a Rainbow E2 type 12 on Craig's List. I bought it from an elderly woman whose little Rover chewed the cord almost to the body of the machine. She simply wanted to get rid the vacuum. I paid her $150.00 for it. All it needed was a new cord. Now it's in like new condition. My problem is that I'm not sure what the 2nd or low speed is for. I found a PDF copy of the manual on the internet; however it does not say much about the low speed. Can someone explain what that speed is for?  Although the image below is not my machine it is the same model as mine.

Thanks

Michael

Do you know if that feature actually works & do you leave the machine on without the attachments

The Rainbow has certification from AHAM and of course the Asthma and Alllergy Foundation of America.

I use the low speed to clean the air in my kitchen after meals. I have been told it is very useful if someone is a smoker. Since water is a natural odor absorber it will turn the water yellow from the smoke. 

I was told with the advanced Hurricane brush les motor it can run 24/7 without harm.

Thank you all for your very helpful information.  I feel much better about using the machine in our bedroom in the evening.

Rainbow's are a very cool vacuum, I just don't like having to throw out the water everytime, clean the bottom of the vac and the water container, separate them all out till they are dry.

I just like hitting the cord reel and be done with it. But I would never put down anyone who wants one! To each his own!! And I do like Rainbow's!