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Old 07-06-2004, 12:36 PM   #1
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1959 26' Overlander
Putnam , Connecticut
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Furnance sizing

I have no idea what size furnace the Bat Cave Express (59 Overlander) had in it, it is long gone. I am at the interior design stage and need to figure how many BTU's I'll need. Guess I'll have to use ducts since we may find ourselves in some cold areas but I'm fighting the idea of ducts.
Anyone have a formula for BTU's for Airstreams or know what size furance they have in their 25-30 AS.
As a related matter what size AC are you using.
Design considerations or learning from your errors also welcome.

Thanks
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Old 07-06-2004, 01:18 PM   #2
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1973 23' Safari
North of Boston , Massachusetts
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Quote:
Originally Posted by psychpw
I have no idea what size furnace the Bat Cave Express (59 Overlander) had in it, it is long gone. I am at the interior design stage and need to figure how many BTU's I'll need. Guess I'll have to use ducts since we may find ourselves in some cold areas but I'm fighting the idea of ducts.
Anyone have a formula for BTU's for Airstreams or know what size furance they have in their 25-30 AS.
As a related matter what size AC are you using.
Design considerations or learning from your errors also welcome.

Thanks
no idea on the "btu formula"...but I can tell you that my 23' was originally equipped with an "NT-22", which I believe gets its model number from its btu rating of 22,000. the current replacement for that model is an NT-24. (Suburban).

fwiw: my catalytic heater warms the trailer TOO well, even on the very lowest setting. on a 40 degree morning, the thermometer in the front of the trailer read 75. it is too much if anyone is sleeping on the front gaucho (heater would be aimed right at them, 3 to 4 feet away!). We did leave it on all night one night, when there was just the 2 of us on the bunks, and it was quite comfortable back there, not being too close to the heater, and not having any air circulation.
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