Norm Hall
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November 28, 2022
You have a Bell & Gossett Flo-Control valve on the primary secondary bridge of an older hydronic system. It has been there for over five... READ MORE
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The owner of a local engineering firm recently said to me, “First cost and space are key discussion points in any building design.” First cost... READ MORE
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How does the commercial heat pump water heater, using the preferred R-744 refrigerant, handle the domestic hot water recirculation load? The R-744 (carbon dioxide) heat... READ MORE
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Top 10 Things You Should Know About Commercial Electric Boilers (Part 2)
Norm Hall
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June 6, 2022
Welcome back to Part Two of our top 10 things to know about commercial electric boilers. As mentioned last week, HVAC and Plumbing Engineers are... READ MORE
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Top 10 Things You Should Know About Commercial Electric Boilers (Part 1)
Norm Hall
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May 30, 2022
HVAC and Plumbing Engineers are discussing more decarbonization and electrification of systems with their clients. The use of electric boilers vs. gas fired condensing boilers... READ MORE
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Carbon reduction in building design is critical to the lifestyle of our future generations. Most engineers and their owner clients understand the concerns and welcome... READ MORE
What is a Flexible Tube Condensing Boiler? Why My Client May Want It
Norm Hall
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May 16, 2022
Heating and cooling service contractors take the brunt of complaints over the high cost of condensing boiler repairs. A high efficiency condensing boiler heat exchanger... READ MORE
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Previously, the R. L. Deppmann Monday Morning Minutes looked at pump location in a primary-variable boiler heating system. We made a very definitive statement about... READ MORE
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We recently received several calls for our recommendation on whether to pump into the boiler or out of the boiler in a primary variable heating... READ MORE
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Condensing Boiler Venting Material (Part 1)
Norm Hall
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March 21, 2022
Proper venting of hydronic condensing boilers is critical for the safety of occupants and the successful operation of the heating plant. The materials that may... READ MORE
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