Articles by John Siegenthaler, P.E.

Microflows<br>John Siegenthaler

February 1, 2007
Heating a 2,500-square-foot house with a 40-watt circulator.
Read More

Take The High Road<br>John Siegenthaler, P.E.

January 23, 2007
Some advice for aspiring hydronic heating professionals.
Read More

Two Certainties

December 1, 2006
Hydronic systems, like nature, want balance.
Read More

Fewer Bridges To Cross<br>John Siegenthaler

November 1, 2006
Alternatives to parallel primary loops.
Read More

Heating A 'Thermos Bottle' House<br>John Siegenthaler

October 1, 2006
Full-coverage radiant floors may not be the best choice.
Read More

Disappearing Btus<br>John Siegenthaler, PE

September 1, 2006
The boiler isn't the only source of heat in many hydronic systems.
Read More

Picturing ∆P<br>John Siegenthaler, PE

August 1, 2006
Visualizing pressure differences is key to proper hydronic design.
Read More

Thermal Equilibrium<br>John Siegenthaler, PE

July 1, 2006
Achieving a balance between heat emitter area and supply water temperature.
Read More

NEW!!<br>The Glitch & The Fix -- June 2006

June 1, 2006
Learn to design more efficiently by troubleshooting the following hydronic schematic. The answer to this "glitch" can be found in PM's twice-montly e-newsletter Radiant & Hydronics e-News. Sign up for free here.
Read More

Backward Thinking<br>John Siegenthaler

June 1, 2006
What happens when flow reverses in primary/secondary systems?
Read More

Multimedia

Videos

Image Galleries

DEWALT media event at Stanley Black and Decker University

The DEWALT media event was hosted at the Stanley Black and Decker University in Towson, Md.
Photos by Mike Miagza

3/13/13 2:00 pm EST

Prepared to Navigate the New Lead-Free Laws?

AVAILABLE ON DEMAND Sail through lead-free law compliance. When piping a potable water system, the bronze valves you’re using have an expiration date –January 4, 2014. Find out what US Senate Bill S.3874 is about, how it compares to previous standards, and most importantly — how it will affect you.

THE MAGAZINE

Plumbing and Mechanical

PM May revised

2013 May

Check out the newest issue of Plumbing & Mechanical magazine! You can also view our Ad Index here.

Table Of Contents Subscribe

PM Poll

As we approach mid-year, how do your sales compare to last year? Sales are:
View Results Poll Archive

The Plumbing and Mechanical Store

M:\General Shared\__AEC Store Katie Z\AEC Store\Images\Plumbing\new sites\valve-handbook.gif
Valve Handbook

Revised to include details on the latest technologies, Valve Handbook, Third Edition, discusses design, performance, selection, operation, and application. This updated resource features a new chapter on the green technology currently employed by the valve industry, as well as an overview of the major environmental global standards that process plants are expected to meet.

More Products

Clear Seas Research

Clear Seas ResearchWith access to over one million professionals and more than 60 industry-specific publications,Clear Seas Research offers relevant insights from those who know your industry best. Let us customize a market research solution that exceeds your marketing goals.

Truck of the Month

Truck of the month

Are you proud of how your service truck looks? Do the graphics give people whiplash as they drive by? Have your calls increased because people remember your truck — and your company name? If so, we’d like to see it, too! Click here to find out how your service truck could be chosen as PM's Truck of the Month.

 

STAY CONNECTED

Connect to PM on Facebook Connect to PM on Twitter  Watch PM on YouTube