I live in Anchorage and have just received my heat load calculations from a State energy audit.
The resulting heat load required 71,280 btu/hr, and the rater added 20% for domestic hot water and a "cushion" for a total heat load of 85,486 btu/hr.
My house was built in 1952 and is 1650 sq ft. It's one story with finsihed basement. Our ancient boiler is running the show and I have a Triangle Tube SMART 60 hot water maker. There is 120 feet total of 1/2" baseboard fin tube total. I have a family of four.
I'm looking at a Burnham ES2-4 that has a DOE of 89,000 btu/hr and would like to pair the boiler with Burnham's IQ control that includes an outdoor set back.
Should I stick with the 89k btu boiler, or jump up to the next size Burnham which has a DOE of 119,000 btu/hour to give myself more of a cushion?
I've asked two "pros" here in Anchorage and one guy said stick with the raters recommendation, and the other said bump up to the next size boiler.
Anyone in colder climates like to chime in? I would hate for the rater to have made an error in the calculations, and I end up with a cool house and cool wife.
Is going with a bigger boiler a mistake? Anyone know anything about Burnahm's IQ control?