We are replacing and relocating our boiler. This is a Navion 250, installed in our garage. It produces 4 gallons of hot water per minute with (I think) a 70 degree temperature rise.
Our 1969 Weil-McLain boiler has been very reliable, if not particularly efficient. I am looking forward to reclaiming the space occupied by the 1969 boiler and hot water heater as a pantry.