Going bigger, and bigger in boiler size does not even make sense. Like I said, 80% of heat loss is through attic. He has NO insulation in his attic. By restricting his flow going up stairs, his room temps jump to 72*. If he insulates his attic, That Kaa-2 will EASILY heat his little 900 square foot house. And do it on a fraction of the coal he now uses. The Kaa-2 keeps my 1700 square foot (average insulation) house at 73*. And that's below zero, up on a windy hill. If he does the work himself, what's it going to cost? $400.00, maybe $500.00 in insulation. It's a one time deal..........EarthWindandFire wrote:I've read this thread with keen interest because my house is the same size as the OP. It's clear that with significant heat loss, the Kaa-2 is not large enough for even a small home if not well-insulated.
So, what does the OP do for next year?
Should he sell the Kaa-2 and buy the larger Kaa-4 or better yet, the KA-6. This board has taught me that size matters, and you can never have enough btu's. I would rather complain about unburned coal in the ash pan from an idling boiler than be in a situation where the house is cold because the 5 or 6 thousand dollar boiler I bought is too small.
Just posting an opinion.....