Here's a nutty question. Has anyone tried using a squirrel cage blower fan as a whole house fan? I have no attic space and was and the windows are 22 inches wide, so I was thinking of a blower fan (like the attached image), with a baffle, sized to the window opening, might do the trick. And, if that works, maybe even enclose the fan in an a mdf box (with holes of course) to add a layer of noise dampening. I welcome all and any suggestions. Thanks in advance! Greg [ATTACH]32353[/ATTACH]

We upgraded our thermostat last October and didn't record the wiring or save the old thermostat. Our heat worked great, but now the A/C doesn't turn off and we've deduced that it's a wiring problem. We have a Carrier Performance 80 that we can't find online diagrams for and when we emailed the picture in the unit to my father-in-law, he says it's missing information. The new thermostat is a Honeywell RTH2300. The wires inside the wall are Orange, Green, Red, White, and Blue, but the Blue wire isn't connected to anything on the HVAC end. There are two groups of wires coming from the HVAC. Green and Yellow. Yellow, Green, Red, White, and Blue. The two yellow wires are connected. The green wire paired with the yellow is connected to the orange. The Green paired with the other wires is connected to green, red to red, white to white, and blue is hanging out.  Unfortunately, the image uploading keeps failing.