Sky, I was involved with this home on the filtration end of things through the Solar Center @UCF. These were all young engineers who would not listen to any thing.

They wanted to use HEPA filters because they felt if any one had a sinus problem this would be the trick. I asked them if they planned to have doors in their house and they looked at me like I was nuts. You see each and every time you open a door/window you welcome partulate into the dwelling.

They felt they could use an air wash system with neg pressure...wonderful use of energy.

I asked about fan speeds because of the extremly high pressure drop...had not got around to that yet.

So we gave them some filters at no charge....I am not surprised to hear this story.

It's like this "Green Deal", aint going to happen unless you are a gov't and money is not a concern.

woof...woof