Raypak manufacturers a large size range of commercial water heaters from 180,000btu all the way up to 4,000,000btu. We also make a product designed to fit any application, from our tried and true 82% atmospheric models, the 84% fan assisted all the way up to our 98% high efficiency heaters. We have the largest selection of space saving vertical heaters as well as the most comprehensive horizontal heater selection. Visit or web site and explore the possibilities that Raypak offers.