I'm renovated four 900 sq ft apartments in northern nj.
The heat loss of these places will be about 15 to 25k/but hr. I'm insolating with foam, plus all new windows, no exterior door exposure.
Can anyone suggest a wall hung boiler or tankless that could efficiently provide heat and hot water? (tenants bills in the building I live in now are 200 plus monthly for a bradford white or laar minitherm combi systems; plus, tanks in the apartment is a now a no go here in NJ). I was looking at Navien commercial condensing but horror stories galor online...
The other option is a central mod/con indirect for all apts, and I control the thermostat and charge for heat.