Small older home that has in-wall cast iron radiators throughout the house in a single zone. Hot water not steam. When the kitchen was remodeled years ago the cast iron radiator was removed because it would have been behind the new fridge location. The idea was that it would be moved to a different location but years later it's still on the todo list.
I have been exploring other options but it seems like the easiest most cost effective thing to do would be to add a kickspace hydronic heater under one of the kitchen cabinets.
Is it okay to mix the kickspace heater on the same single zone as the cast iron radiators?
Some additional info if it factors in... The smallest kickspace heater I can find is almost twice the BTU needed for that room. The 1st floor where the kitchen is is all open and generally colder than upstairs.
The main heating pipe is 1" copper tubing I believe or there abouts. For each cast iron radiator there's a venturi T fitting on the supply and return 1/2" copper piping. I was going to plumb the kickspace heater into the existing supply and return pipes that go to the old radiator which is removed and capped off.