I am having a hydronic radiant floor heat system installed. Our house is in cool climate, 3,100 sq ft (crawl space) and we are having to remove the 15 year old existing system due to tubing failure. I am unclear as to which heat source is best, most efficient. Should I use a boiler, a water heater or a boiler/water heater combo? I have read conflicting information that causes me concern - the efficiency of the boiler may be good but length of service is questionable. A water heater is good but not necessarily designed for floor heat. I would also like to incorporate a solar hot water collector. How does this come in to play?
Regards to all and thanks for your thoughts.