With inputs up to 500,000 Btu/hr, 96 percent thermal efficiency and storage up to 125 gallons, SHIELD has everything it takes to provide the ultimate green operation – without the risk of lime scale buildup inside the tank. With other commercial water heaters, heat transfer takes place inside the tank through flue tubes or coil-type heat exchangers. As a result, thermal efficiency decreases over time due to lime scale buildup, which gradually drives operating costs up. In fact, as little as one-fourth of an inch of lime scale on the heat exchanger can increase operating costs by 25 percent and cause tank failure in as little as two years.

A helpful resource to guide you to other possible rebates and incentives in your geographic region is www.dsireusa.org. You can click on your state to find what may be available in your area.



Other resources include www.energytaxincentives.org. This site is brought to you by the Tax Incentives Assistance Project (TIAP).