Systems Help Center

Our comprehensive HVAC Systems Help Center covers a wide range of HVAC-related topics, including air conditioning and heat pumps, geothermal, hot-water heating, thermostats and controls, solar, steam heating, and warm air. We also have a section of informative and entertaining articles to help you sharpen your HVAC business skills. And our Heating Museum is a captivating journey through the evolution of HVAC technologies. 

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Recent Articles

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Steam Piping and Pressure Differential

A New York City contractor called me a last winter to tell me about a situation that he had gotten himself into. We’ll call him Augie because that’s close enough. "The ol...

Published on 06/24/2014 9:32 AM by Dan Holohan
Posted in Steam Heating
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Why You Should Insulate Steam Pipes

When you take an old house under your wing you sometimes also get to take possession of an old steam heating system and an awful lot of asbestos insulation that goes alon...

Published on 06/24/2014 9:16 AM by Dan Holohan
Posted in Steam Heating
zone valves on steam boiler
How Vacuum Can Form in a Steam System

I heard from an old friend the other day. This guy works in Brooklyn, NY, and usually on some very interesting stuff. He's not one to say fuggedaboutit when there's a pro...

Published on 06/24/2014 9:05 AM by Dan Holohan
Posted in Steam Heating
Head Scratcher1
Steam piping gone wrong

A steam stumper! In Baltimore, about four blocks from my house, there lives an elderly couple. They're still in the same three-bedroom cottage where they raised their fam...

Published on 06/24/2014 8:37 AM
steam coil
Why Do Steam Coils Freeze?

This e-mail showed up in my inbox one day. "Our problem is that five out of hundreds of univentilator coils freeze up on a regular basis. They are part of two pipe steam ...

Published on 06/24/2014 8:04 AM by Dan Holohan
Posted in Steam Heating
What is a Drop Header?

A question asked on The Wall: "What's the point of building a drop header for a steam boiler, and what does it look like?" Steamhead replies: The drop header keeps water ...

Published on 06/24/2014 7:59 AM by Members of the Heating Help Community
Posted in Steam Heating
copper piping on a steam boiler
Copper Tubing and Steam Systems

A question asked on The Wall: "Is it okay to use copper on steam systems?" Brad White replies: It is not so much temperature as cyclical heating and cooling. Hot water ru...

Published on 06/24/2014 7:18 AM by Dan Holohan
Posted in Steam Heating