v Acknowledgments The author and publisher would like to thank the following companies, organizations, and individuals for their contri- bution of resource material, images, or other support in the development of Hydronic Heating: Air Conditioning Contractors of America (ACCA) American Gas Association Bacharach Bosch Thermotechnology Caleffi North America, Inc. Central Boiler, Inc. City of Holland Danfoss Dwyer Instruments, Inc. Emerson Climate Technologies Fenwal Controls Field Controls LLC Functional Devices, Inc. Honeywell, Inc. Ideal Industries International Code Council Master Lock Metraflex Michael Helsel Modine Manufacturing Mueller Industries, Inc. Myson National Museum of American History National Renewable Energy Laboratory (NREL) NIBCO Inc. Rheem Manufacturing Company Rinnai R.W. Beckett Corporation Sealed Unit Parts Co., Inc SlantFin (slantfin.com) Solar Panels Plus Solar Pathfinder Sterling Superior Refrigeration Products Taco Comfort Solutions TEC (The Energy Conservatory) Tekmar Uline Ultra-Fin Radiant Floor Heating System Uniweld Products, Inc. Uponor, Inc. U.S. Department of Energy Viega, LLC Watts Webstone Xylem, Inc. York International Corp.