[rc666]

Hello,
The question is about oil furnace which I use to heat up the water for heating system in my house. The system is floor radiant heating and it is old one from 50’s.
The problem is: the furnace heats up the circulated water not fast enough and takes around 1h to get the floor warm.
The question: What can I do to improve the speed of heating the water in the system?
I was thinking about electric water heater and to connect it to the furnace.
If this is a good idea, I don’t know how to connect the electric heater.
Any suggestions or better ideas? And of course, money saving.
Natural gas is not an option.

[Grady White]

If it only takes an hour to heat the floor, that is quick. Radiant heat is not noted for being fast. It is, however, noted for its temperature stability & overall comfort from floor to head level.