Question: Outdoor type. Boiler type or pressure tank type. Pros and cons please. Also brands and various ratings. Who to contact? So far i have heard enough to really confuse me. Any help will be greatly appreciated. Thank you. Answer: For most regular heating needs, a pressurized boiler would probably do better. The outdoor ones come into play for those with large wood resources and larger areas to heat. "Indoor" boilers are usually true boilers, that is they have been tested and approved as to the construction and longevity of the vessel. Outdoor "wood furnaces" do not have particular standards that apply to them exclusively, so you could find a wide range of quality, longevity and efficiency. You also have to consider whether you want to load your stove in the great outdoors. IN summary, weigh your needs and the pros/cons of the different types and models and make an informed decision.