Ross Heater was a manufacturer of shell-and-tube heat exchangers. With more than 70 years of experience, the company was once an industry leader in the design and manufacture of shell-and-tube heat exchangers. Through a series of mergers and acquisitions, however, Ross Heater is no longer in business. HeatX offers replacement shell-and-tube heat exchangers that are often direct drop-in replacements for existing Ross Heater units still in service.