Storage is definitely something I will look into, its just that right now I want to get up and running with a wood boiler. I know I shouldn't rush it but if I wait I will be getting my third fill of fuel in February which will put me at 2400 for the year on oil which I feel would be much better spent towards a wood boiler. I know its hard to tell because I never did a heat loss calculation or figured how many BTUS I need but do you think I could make it work with an EKO 25, again my house is 1950 square foot with a basement and garage that is at 1885. I realize the footage is over what the EKO 25 is rated at I believe its 1800 square feet. But I wouldn't have all zones on at once so my thinking is that The 25 will work for me, at least for now. Any ideas?