This is a project I started early spring, boiler holds 950 Gal, + 500 Gal propane tank, heated my shop march & april , built with old iron around the farm. Don't know how many BTU. Heated the first load of water from wellwater cold to boiling in 3 hrs. with osage orange. Plumbing will be next, just finished insulating yesterday. Plan to heat my house, shop & DHW. very economical from what i see. Thanks for all the vast knowledge from hearth.com. Very interesting & fun project, burns awsome with no smoke.
Larry
Larry