Bristol Stickney has been designing, manufacturing, repairing and installing solar hydronic heating systems for more than 30 years. He holds a Bachelor of Science in Mechanical Engineering and is a licensed Mechanical Contractor in New Mexico. He is the Chief Technical Officer for SolarLogic LLC in Santa Fe, N.M., where he is involved in development of solar heating control systems and design tools for solar heating professionals. Visit www.solarlogicllc.com for more information.

Max Rohr is a graduate of the University of Utah and manager of REHAU Academy in Leesburg, Virginia. He has worked in installation, sales and marketing in the hydronics and solar industries since 1998 and writes this column in his personal capacity. The views expressed are his own and do not necessarily reflect those of the company he works for. He can be reached at max.rohr@mac.com and on Twitter @maxjrohr.

Jay Egg is a consultant and designer of geothermal HVAC systems, in addition to being author of two books and several articles on the subject. He is the Founder of Egg Geo, LLC, and focuses on geothermal advocacy, engineering,  and educational efforts. He can be reached at jegg@egggeo.com or egggeo.com.

Steven Nudelman is a partner at the law firm of Greenbaum, Rowe, Smith & Davis LLP in Woodbridge and Roseland, New Jersey. He is a member of the firm’s Litigation Department and its Construction, Alternative Dispute Resolution and Alternative Energy & Sustainable Development Practice Groups. He may be reached at (732) 476-2428 or snudelman@greenbaumlaw.com.

Timothy Allinson is chief plumbing engineer at ACCO Engineered Systems. He holds a BSME from Tufts University and an MBA from New York University. He is a professional engineer licensed in both mechanical and fire protection engineering in various states, and is a LEED accredited professional. Allinson is a past-president of ASPE, both the New York and Orange County chapters. He can be reached at lagunatictim@gmail.com.

Ron George, CPD, president of Plumb-Tech Design & Consulting Services LLC, is a hot water expert and ASSE 12080 Legionella Water Management Specialist. Visit www.plumb-techllc.com for more information.

Samuel S. Dannaway, P.E., FSFPE, is a licensed fire protection engineer and mechanical engineer with bachelor’s and master’s degrees from the University of Maryland Department of Fire Protection Engineering. He is a past president and fellow of the Society of Fire Protection Engineers. He is vice president of Fire Protection Technology at Coffman Engineers Inc., a multidiscipline engineering firm with over 360 employees across eight offices. Sam can be reached at dannaway@coffman.com.

John Gregory has nearly 35 years of experience in medical gas system design and inspection, process piping, plumbing and fire protection system design for multiple business classes. He is a certified medical gas inspector, NITC 6020. John serves on the NFPA 99 Technical Committee for piping and installation, and he is a co-chair of the P.I.P.E. Medical Gas Committee in Arizona. Email John at john.gregory@wsp.com.