iQ Series — Deionized

The wall-hung iQ251D on-demand water heater is designed to be a commercial “workhorse.” Each unit delivers 251,000 BTU/hr and is ideal for highly variable applications using deionized hot water. Ideal where space is at a premium, the iQ251D is the most compact and only gasfired, deionized on-demand water heater on the market.

iQ251D Key Features:


Ideal for hotels, schools, hospitals, restaurants, laundromats and other commercial applications.


Eliminates the need to oversize an installation with redundant equipment.

Better ROI

Lower capital and operating costs compared to boilers and tank-style water heaters.


Commercial-grade, expandable 316L stainless steel heat exchanger with proven durability.

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