Boilers & Hydronics

My First Online Teaching Experience

I Often Find Myself Talking to My Computer
By John Siegenthaler, PE
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Last fall, I taught my first online course dealing with designing hydronic heating systems. The course was titled “Mastering Hydronic System Design.” It was a collaborative effort between HeatSpring Learning Institute, BNP Media’s CE Campus, and myself.


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Facts + Figures: Air-Source Heat Pump Shipments Up Nearly 28 Percent in February

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Industry figures are estimates that are derived from the best available figures supplied by a sample of AHRI member companies.  


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Aerco Intl.: Boilers and Water Heaters

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The AM Series of boilers and water heaters features an advanced, high-efficiency condensing hydronic technology that produces installation, operating, and lifetime cost advantages to systems operating from 399,000-1 million Btuh. 


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Communication is a Contractor’s Best Tool

Don’t Be Afraid to Share the Ins and Outs of a New Wet Heat System
By Tom Tuohy
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The moral of the story is to do the complete job, from the start. This means explaining to the homeowner ahead of time what you are going to do and the potential problems that could arise after the installation is complete. 


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When I’m 64: Knowledge is the Greatest Gift

Knowledge is the Greatest Gift You Can Give
By Dan Holohan
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I turned 64 in January, and if I knew I was going to live this long, I would have taken better care of myself. 


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Facts + Figures: Air-Source Heat Pump Shipments Up Nearly 28 Percent in January

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Industry figures are estimates that are derived from the best available figures supplied by a sample of AHRI member companies.


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Contrasting Rules of Thumb, Calculations

Using Accurate Numbers is the Professional Thing to Do
By John Siegenthaler, PE
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If you’re using a calculator, spreadsheet, or other computational tool, you should use the most accurate numbers possible. It’s just part of being a professional.


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Modine Mfg. Co.: Hydronic Unit Heater

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The Hot Dawg H2O is an extension of the gas/propane Hot Dawg line. It has no moving external parts, making it a perfect fit for places like a garage or warehouse, the manufacturer said.


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Laars Heating Systems Co., a subsidiary of Bradford White Corp.: Boilers, Volume Water Heaters

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Offering a 5:1 turndown, the MagnaTherm boiler or volume water heater with Advanced VARI-PRIME™ Boiler Pump Control seamlessly matches boiler firing rate to pump flow, reducing boiler pumping costs. 


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HVAC Equipment Shipments Spike in 2013

AHRI Year-to-Year Data Supports Industry Momentum, Positive Economic Outlook
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The numbers support the growing consensus in the industry that things are definitely improving. 


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2014 Energy Efficiency Forum

Highlights from the 25th annual Energy Efficiency Forum in Washington, D.C.

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NEWSMakers: Mark Satterfield

Mark Satterfield, founder and CEO of Gentle Rain Marketing Inc. and author of “The One Week Marketing Plan” talks about his book and the importance of HVAC blogging. Posted on Sept. 19.

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2014 September 15

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The NEWS reported that a man received prison time for venting R-22. Should EPA step up enforcement?
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2014 National Plumbing & HVAC Estimator

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