Available in twenty-one sizes to precisely match any heating requirement, the Mighty Therm is sized from 500,000 to 5,000,000 BTU input indoor and outdoor models. Designed-certified by the American Gas Association Laboratories, under ANSI standard Z21.13 and also the Canadian Gas Association. Outdoor units are certified for use without the addition of a draft diverter or external venting.
Indoor units incorporate a built-in draft diverter and require only vent piping.
Natural gas heaters are equipped with an intermittent ignition device. The controls, copper tubing and combustion chamber are warranted against defects in materials and workmanship for one year from date of purchase. All other parts are warranted against defects in materials and workmanship for five years from date of purchase. Soft water and sea water models are also available. Cupro-nickel alloy finned heat exchanger tubes, bronze headers and header covers meet the special needs of salt water pool environments.