Hi I've just started burning pellets this season swithching from oil. I can heat my whole house with the pellet stove my hot water though is still off the oil monster. What I want to do is either go tankless or use a 30 gallon holding tank. I will probably go with propane. I need some input on which one to go with . I know the tankless will cost me double to purchase but if its more cost effcient to operate maybe it will be worth it in the long run. Any input would be helpful.