I got a call from a guy who wants to put forced hot water cast iron baseboard heat in his basement. He wants 5 different zones. Which means he needs atleast 2 circulators. He said he already has 5 zones in the house already up stairs.

My question is what are the pros and cons of standard baseboard loops conpared to cast iron baseboard loops. What are the major differences installing and running the cast iron vs. the standard metal fins baseboard. Anyone with information on cast iron style baseboard forced hot water system ill greatly appreciate your feedback. I have never installed a cast iron baseboard system. Can you tell me what im in for?