At Harsco, we believe intelligent controls make intelligent systems. ENVI® control, our unique integrated boiler control system, is specifically engineered to maximize the performance of our boilers.
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Harsco Industrial Patterson-Kelley, a trusted industry pioneer for over 125 years, manufactures and sells a full-line of condensing, non-condensing and hybrid hot water boiler systems, as well as semi-instantaneous and instantaneous water heaters. Harsco Industrial Patterson-Kelley offers a wide array of commercial boiler products including both outdoor boilers and gas fired boilers.