We are seeking a new boiler to boost capacity in our nursery which is heated by hydronic heat. The new boiler would input approx. 200,000 BTU. There are a number of brands available with slightly different equipment and claims. Anyone have experience and opinions as to the effectiveness, quality and reliability of any particular machines?

For that size unit get the large Munchkin unit. Model Number 199VWH

Heat Transfer Products, Inc. (http://www.htproducts.com/products/index.html)