Triangle Tube introduces its Comfort residential indirect-fired water heater. Available in two sizes, the Comfort features the company’s exclusive, self-cleaning, stainless-steel tank-in-tank design and an outer tank (primary) capacity of up to 20 gal., which can be utilized as a buffer tank in a low-mass boiler system. The Comfort is backed by a 10-year, nonprorated residential warranty.PM1014_Products_Triangle-Tube-Comfort_Tank_300.jpg