Types of PEX pipe
You have options when it comes to the tubing you bury or staple up on a radiant job. You may choose to go with a particular supplier and never question the type of tubing...
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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
Oxygen-Diffusion Corrosion in Radiant Heating Systems
Whether you’re doing radiant floor heating or hydronic snowmelt jobs, it pays to give lots of thought to this oxygen-diffusion corrosion business. Since this is one of th...
Levittown Radiant Heating Systems
I grew up in Hicksville, Long Island (don't laugh!) and I spent a good part of Junior and Senior High School sharing a classroom with Billy Joel, and that is my single br...
Understanding Primary-Secondary Pumping
Primary-secondary pumping has become pretty popular nowadays, especially with boiler manufacturers. They love it because it offers a simple way to protect their boilers a...
Primary-Secondary Systems Sometimes Overheat
The guy had told his architect to have a corner of his basement dug out so that he could play half-court basketball with his two kids. The ceiling was 14 feet above the p...
Why Your Boiler Needs a Low-Water Cutoff
A friend of mine who happens to be a contractor went out to look at a hot water boiler that was causing its owner a problem a few years back. It seems the flame had chewe...
Loop System Hot-Water Heating Q&A
Q: What's loop hot water heating? A: It's the simplest method of heating with hot water. Each zone consists of a single loop made up of the pipe and the radiators.
The Air We Breathe
I have an old book on my shelf that came to me by way of my friend Paul Yunnie. Paul lives in England and is Chairman of the ASHRAE Historical Committee. I time-travel wi...
Basics of Indoor Air Quality
We of the Hydronic Realm often don't think too much about Indoor Air Quality, but that mindset is obsolete. We need to look at the Big Picture, not just the heating syste...
Absolute and Relative Humidity
At a recent seminar someone asked a question about the widely accepted statement that forced-air heating system dry out the air as it passes through the heat exchanger. I...