oil furnaces

PJ Curran

I may have to replace my furnace soon and would like some advice on options. I have gas service in the house but have never had a gas fired furnace. I have a three zone, four bedroom, two level house. The furnace that I have now requires a separate circulator off the furnace and the water is heated by that. Fifteen years ago, it replaced an old tankless system and the domestic hot water supply worked fine. With the separate hot water heater system, I sometimes run out of hot water. The oil supplier says that it is probably because of the small volum of "heating waterA" in the furnace itself. I can't recall the name of my present furnace, I think it is called a Heat Cube.