And I believe that. I have a 100K two stage furnace .... the second stage was having uses ... ran on the first stage (60K) for a few months in the coldest part of winter with no issues.
Using the online calculator, it came up with 75K BTU per bay ... that is per 1100 sq ft at 18 ft high. The way it was explained to me, it is like having double the sq footage because the ceiling is over double the height of a normal house.
This would mean my 3000 sq ft building is more like a...
I will definitely double check. Maybe different manufactures have different requirements. I know one was 81" (just remember because it such an odd number) and the other 96"
Maybe some are less ... I will check ... Thanks!
I have a tankless water heater here now ... love it. I would want to go the same way. I have a rough in for a shower ... nice to leave the mess in the shop. Using PVC and pex is cheap .... so 140 is a good idea.
Definitely something to think about!
Thanks for all the advice !!!!!!!!!!!!!!
So it looks like the boiler is about $3K ... and each of handlers about $2K (times six) ?
Can I guess that even if the building calculates out to 75K BTU per bay, I only need say 100 or 120 K boiler as you are only heating one zone at a time?
Thanks
I will have to do a bit more homework. I looked at two of these units. Even on a wall they wanted almost 8 ft of clearance ... just don't have that much room ... but I will check into it again.
Interesting! I have only seen older systems with one (or two) pumps near the boiler. I see this one has a pump at the handler .... that is how they use the tankless heater.
What I like about this system is you can put two handlers per bay so the heat is evenly spread.
Spray foam is out of the budget .... I used it on the house in spaces like the floor joists hitting the rim board.
My house is large ... only two bedrooms but we hit ledge when digging to rather than spend $30K to dynamite a basement we went up ... basement is the ground floor ... entire house...
I did calculate (I was in a hurry) the walls as outside walls ... but I didn't think just one of the 4 walls would throw off the calculations that much. I will re-run them and see what I get.
Just didn't have the time .... $25K in roofing (standing seam) all came in dented and scratched. They...
https://www.loadcalc.net/
Maybe I was wrong but then why would the factory come up with the same answer?
I can post all the number later ... or maybe run them on a different calculator.
I do agree ... 75K seemed very high. My furnace in the house heats on low so 60K for the entire house.
The factory did recommend 75K ... and I used an online load calculator .... it said 72K .... maybe they are being way more conservative?
Mike
Yes, I have a wall between each bay. The building was roughly 64 wide x 52 long. I divided it into three bays (two with 14 x 14 doors ... one with access only from the inside and and off ice in the front part).
I was planning on one heater per bay. This way I can control the temperature of...