Jim McLaughlin wrote:

Here in the Pacific NW we usually have no need for AC. Yet the older I
get, the more the rare 100+ day affects me. We are going through a series
of 3 or 4 of those days now.

So I'm thinking about the room AC option. I'm not intending to stay in this
house more than another 8 - 10 years, so I don't think the whole house AC
opton really pans out

Any one have any links to sites that purport to give fomulas fo determining
what sze BTUs) unit for what size spaces?


All of the formulas I have seen are way off, they oversize by a mile!
A lack of air circulation is the smaller unit's major shortcoming, so
you need to supplement the airflow!

I cool the first floor over 900-S.F. of a 1934 with a mere 6,000-btuh
9.7-EER half ton ultra quite very good airflow remote control Whirlpool
window unit.

Yes, we have the rare 100+ days too and it handles it just right.

It said on the box that it cools rooms up to 225-S.F., "it cools Four
(4) times that area and does it perfectly."

"The new linked chart at .90 for my area, calls for 19,600-btuh daytime
3.26 times more cooling btuh than needed using a properly placed floor
fan, and 14,740-btuh used for nighttime cooling (ridiculous)."

You have to use a floor fan and read my page on how it is done. - udarrell

http://www.udarrell.com/aircondition...harting.h tml


--
Air Conditioning's Affordable Path to the "Human Comfort Zone Goal"
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