Hi, Our new (old) house has hot water heat. I am very excited to use this type of heat. I hear it is more effecent overall (vs. forced air). I have never ran this type of heat before. The house has old style cast iron stand up radiators and a new boiler setup (like 3 years old maybe). It all is in very good shape. What is the best temp to run? And is it smart to turn down the heat when we go to bed or leave for work. Only the dog is home during the day. With gas prices going up I just want to be as frugal as possible. We wear sweatshirts anyway. Thanks alot for your advice.....:)

Hi, I'm designing a hydronic system for my 200+ year old house. It's mostly HWBB with a space with a panel radiator, using a mod/con boiler and P/S piping. Using 1" for the primary piping and 3/4" for secondary. Question is, what are the rules on using zone valves or circs on the secondary loops. Also can they be mixed. A couple zones using valves and others using a circ pumps. Also I haven't found a panel radiator with 3/4" connections if I put this in series with an other convector/s should I run a by-pass under the panel radiator with a valve to get full flow to the other convector/s? I appreciate your thoughts, Thanks