I hear ya Steamup, wish they could have got you here to design something correct and efficient. When they had their addition put on, I went insane for the whole time. Really crappy G.C. My friend Yvette ended up doing most of the GC work!!! A lot of phone calls. Subs were mostly illegals from the urban areas. Her old steam boiler just served 7 radiators. They hooked the old boiler up somehow to also feed a loop of baseboards. They f'd up the placement too. There was no coordination. There's a baseboard behind built-in cabinets !
Then last year, the new foundation channelled water into the 15 x15' little basement and destroyed the boiler and hw heater during heavy spring rains. Still contending with that.
They got another guy "from the church" to install a new boiler. At that time they should have converted to all baseboards. Or possibly convert the radiators to hot water. But they can't even comprehend the simplest heating system concept, so it came down to cost.
By that time I had to keep my face out of it or kill somebody.
. I only asked the plumber to put in an electronic ignition boiler. He refused ,saying he only installs standing pilot light boilers. So I backed off.