State Water Heaters creates the first-ever residential combination boiler. The ProLine XE Combi Boiler comes with a 4.8gal/min domestic hot water delivery and 95% AFUE. It also comes with a space heating performance with up to 74% more heating capacity than other combination boilers. In addition, State Water Heaters created this boiler with easy installation to make it a great solution for a wide variety of residential applications.

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