Ping Larkin

You're putting the filters in the wrong place.

(1) EXHAUST blower in attic blowing out an external vent.

(2) Electrically-controlled louver to connect to interior AC ductwork, sucking house air out into attic, then to outside world.

(3) Inlet to interior of house from outside, somewhere (me, I might just cut a "window" in the side of the house ;-) outfitted with filter(s).

So use cheapy fiberglass. (Pleated might not pass enough air anyway.) ...Jim Thompson

Right, a man can be alone with his thoughts etc :-). Total removal from all the mental noise of the city. The reference I gave was the roof of the rebuilt croft house and it looks like they have a path north now to get vehicles through. The house is on the north west side of the loch, with the main road to the south south east side and another house just off the road. Between the two houses runs the original path round the loch, to the east.

I'd live in a place like that tomorrow, but it would get the veto from my other half and it's really just a bit too far away from civilisation while i'm still doing client work. Lack of broadband would be a significant problem as well, though there are several satcom ip vendors around now and the costs have come down. (Yes, i have looked into it :-). Always wind though and you could most likely get enough power for most stuff from that, solar and heat pumps.

Somewhere on the border area between wales and england looks like the most likely scenario in a few years time. Perhaps Shrewsbury area. Cape Wrath in the highlands was not received enthusiastically when I suggested it and the N York moors is all yuppie prices now...

Regards,

Chris

is

So, essentially then you made a whole house fan with a hole in the house :-)

Problem with that, huge: Someone goes out the patio door, only closes screen or leaves it all open. Speaking in electrical terms the transconductance of that screen is much higher than that of your hole, meaning most of the filter gets bypassed, meaning yellowish greenish pollen everywhere.

I prefer the mechanical design, because of the high number of lightning strikes around here. If you want to sign off on a CMOS design, go ahead. Its your reputation, not mine.

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All my back yard doors are "pool-proof". Get over it, you just don't know how to make it work ;-) ...Jim Thompson

I did a while ago. Most of it is installed in your neck of the woods. Works great, it's through two seasons now. One must understand the mechanisms, paths, spectra and remedial action when it comes to lightning.

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We have three dogs now. The two older ones know how to open doors and the young one is a smart cookie, always attentively watching the others.

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I'm dog-less at the moment. I may have to change that... my yard man says some large creature is now pooping in the northeast corner... coyote or raccoon :-( ...Jim Thompson

I'm not getting the picture. The idea is to change the air in both the house and attic, quickly, at night when it's cool and then shut everything down during the day.

I doubt it. Any filter worth a damn is going to be big.

BTW, I wouldn't have one of these beasts here in AL. Too humid.

Tell that to people who lose homes and businesses to lightning.

Nature's Democrats, always spreading their crap...

Because builders and codes in the US fail to provide for proper lightning arresters and we build houses from lumber.

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We have a dude with 8-point antlers clippiclopping through the yards here, along with his entourage. And the occasional mountain lion or bear.

Depending on the architecture you may also need an attic fan which is readily available at the usual HW store. We don't because of cathedral ceilings.

I know. That's why I was hoping to find a decent integrated unit. Cut hole, put in, wire up, connect large duct. But nope :-(

Very different out here. Summers are typically bone-dry. Not quite like Arizona but almost. Occasionally a sea breeze wafts in but that cools us down so no need for fancy cooling schemes when that happens.

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:-)

At our 4th of July party, our 20+ guests were stunned that SIX great-horned owls decided to park in my back yard trees and a couple even decided to cool off in my lawn sprinklers... hilariously spreading their wings and laying down in the wet grass ;-) ...Jim Thompson

We have cathedral ceilings and an attic fan. The ceilings still have an attic above them (the roof is *really* pitched high). ;-) I'd rather have a ridge vents than an attic fane, though. ;-(

Most use heat pumps year round here. We haven't had the house open more than a few days so far this fall. It was quite warm late this fall and it's been raining since. Last year was beautiful this time of year. This year, not so much.

So, you've never seen lightning hit a poured concrete building? Pieces of it scattered all over the place and exposed, partially vaporized rebar. That building did have a wood roof, but the lightning struck the walls because of the required rebar and damp concrete. I suppose you'll tell me that never happens in Europe, because they are so much smarter and that the laws of physics don't apply there? .

I've only had one day cool enough to open all the doors and windows this fall.

We had a few days this summer warm enough to open the doors and windows.

John