Hi Dan: I don't recall Bob having a small boiler on the show. Could it have been the "AquaStar" instantaneous gas water heater, you saw? What are your needs, maybe we can help. My company sells all types of tankless water heaters; electric & gas, large & small. Please call me at 1 800 851 9891, or e-mail me at firstname.lastname@example.org Regards, Brian Wood.