In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
Boilers for small apartments
We're looking to replace three boilers lost to Hurrican Sandi on Long Island Hydronic baseboard heat. 2 apts are 600 square ft . + 1 800 sq ft. Apartments have been previously gutted and are well insulated, including interior walls and ceilings. Near as I can tell from the PEX online calculator, we need 24K BTU for the smaller apartments and max 50K for the larger, which has somewhat less comprehensive insulation.
Tenants pay for the their own heat so I'm wondering, do we just get atmospheric units or go for wall hung condensing? Standard stuff (New Yorker) is likely to be more reliable, condensing cheaper to operate.
Additional factor. Atmospheric units will have to be installed in the crawl space, which has flooded twice in the last two years. Potentially we could put the condensing boilers in the apartments. On the other hand, the previous boilers were submerged and repaired in 1992.
Models I'm looking at:
Triangle Tube Challenger Combo
Rinnai e75 cn
Laars Mascot 2
Most wall hung units seem to be oversized for the apartments, even when modulated to their lowest setting.
Any suggestions would be appreciated.