Originally Posted by Lostdog
Sorry, disagree. A HEPA filter doesn't allow allergens thru and I think that allergen particles are smaller than dust particles. I maybe wrong, but, I believe the filters for the little DirtDevil are HEPA.
You're missing the point.
Just the air circulation inside the space stirs up dust and when you're done it settles in that fine layer everybody dislikes.
That's why I like central vacs in the home, they exhaust somewhere outside the living space.
It would be the same deal in a trailer for me. If it was, say, in the basement of a fifth wheel it would be great!