I bought this house a year and a hlf ago roughly 4000 sqft an has oil hotwater and a jensen wood furnace I think it's a af. Wood furnace and oil furnace on different thermostates but in same room, wood furnace on continuous flow once it hits 100 degrees. I can keep the hous between 68-70 and the water temp at 140. I still have a lot to learn but is my furnace maxed out on heat or is something else I can do