I have an old oil hot water furnace and I was wondering if I could reduce
the amount of time and duration it fires up if I added a hot water tank
before or after it? My father in law has a newer, multi zone one and I
noticed he has a ho****er tank beside his. I noticed his doesnt come on as
often as mine does.

My old one is dude for replacement in the next few years and I was also
wondering in what way a new one is better?

mike