swcooper
New Member
Owing to a unique winter inspired set of consequences, I find my self about to replace my 100kBTU Burnham Holiday boiler in my 2000sf 2 storey home.
I see a couple of threads suggesting 100k BTU is way over the actual thermal load on there, although we assessed a quick napkin calculation on the baseboard, etc hanging off it and came to 85kBTU worth.
Here's the numbers though, in zipcode 08528:
1st Dec-Jan3rd 193.3cf/197.4therms
Jan3rd-Feb1st 210.5cf/215.1therms
Feb1st-Mar3rd 193.3cf/198.1therms - gas for hot water and heating only, cooker/dryer is electric.
From loose recollection we have about 80 ft of baseboard upstairs and 70ft downstairs, with a small kickspace too. There's a small 6ft baseboard in the basement that may end up disconnected after this.
We were just going to get a similar replacement Burnham ES2-5 but we've run into some possible snags with chimney lining (is there any reason this would have requirements for anything more stringent than the previous one used?) so figured I would look further into the idea this would be oversized for the task at hand. What does my actual thermal load look like? Should we be looking for a smaller sized unit instead for better efficiency? Installer says the exterior air temp sensor will keep the efficiency up if it is a bit too much.
I see a couple of threads suggesting 100k BTU is way over the actual thermal load on there, although we assessed a quick napkin calculation on the baseboard, etc hanging off it and came to 85kBTU worth.
Here's the numbers though, in zipcode 08528:
1st Dec-Jan3rd 193.3cf/197.4therms
Jan3rd-Feb1st 210.5cf/215.1therms
Feb1st-Mar3rd 193.3cf/198.1therms - gas for hot water and heating only, cooker/dryer is electric.
From loose recollection we have about 80 ft of baseboard upstairs and 70ft downstairs, with a small kickspace too. There's a small 6ft baseboard in the basement that may end up disconnected after this.
We were just going to get a similar replacement Burnham ES2-5 but we've run into some possible snags with chimney lining (is there any reason this would have requirements for anything more stringent than the previous one used?) so figured I would look further into the idea this would be oversized for the task at hand. What does my actual thermal load look like? Should we be looking for a smaller sized unit instead for better efficiency? Installer says the exterior air temp sensor will keep the efficiency up if it is a bit too much.