I have done a search several ways on this topic and just couldn't find a suitable thread that addresses my question.
3000' two story home at 4,200 elevation in California. Fuel source is propane. Home has radiant heating in all rooms plus a wood burning stove. Home is 15+ years old and original owner installed a 50 gal. residential hot water heater for the radiant heat next to an identical 50 hot water heater for the domestic (which I replaced 3 years ago). Needless to say the radiant was never used to fully heat the home (only selected rooms).
I am replacing the radiant system with a boiler meant to meet the btu needs and fully use the radiant heated floors. I am also replacing the wood stove with a propane unit (my back needs a break).
I was looking at a Laars JVi 125 boiler that has been spec'd by a local heating company when I noticed that Laars also makes a combo boiler with a 30 gal. stainless steel tank meant to supply the domestic side. When I asked the heating company rep about it he was less that knowledgeable about the subject. My question to you guys is this, Should I opt for the "combo boiler" and have only one gas fired heating device or should I purchase a storage tank with recir pump and use the Laars JVi boiler to heat the domestic water as a separate zone or do I keep the 50 gal water heater in addition to the Laars boiler? Did I mention that my wife loves to fill her jacuzzi tub with all 50 plus gallons of hot water from the current heater and would love to have about 20 more gallons available. I encourage her to take as many of these steamy baths as possible since we both benefit from them.
Thanks for your help and advice.