The following table shows the annual savings for every point of increased efficiency in the range of 1-30% and period of operation between 55-100% of time.
Gasmaster Industries manufactures twenty-six models of high efficiency, stainless steel, condensing boilers and water heaters with nominal rating in the range of 200 - 8000 MBH (= 58.6 - 2344 kW). Each model consists of two or more parallel stainless steel coils. These are held in a vertical plane, at a predetermined distance from each other.