my boiler has a coil in it, in the summer i turn off the boiler and go to the hot water heater
the coil is garbage so this year i will probably leave the boiler and hot water heater and bypass the coil
so my question, is the aquastat mainly for the coil or is it to keep the boiler semi hot so it doesn;t have to fire up cold or both?
anyway what temp should i keep the boiler at? 160?
do u think it will be much more costly keeping them both on or roughly the same?