Boilers & Hydronics

Wetheads stop here!

ARTICLES

High Pressure Always Goes to Low Pressure

Without a Difference in Pressure, There Can Be No Flow
By Dan Holohan
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Since heat travels on flow like a passenger on a train, where there is no flow, there is no heat. And it’s going to look just like an air problem. Which it’s not.


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Schools Strive for Efficiency, Comfort

New HVAC Technologies Help Administrators Meet Indoor Environment Goals
By Jen Anesi
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Across the country, school administrators are realizing the importance of good IAQ and a comfortable indoor environment, which both contribute significantly to student success. 


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Tips for Updating School HVAC Equipment

Financing Options Help Schools Meet HVAC Project Goals
By Jen Anesi
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According to the manufacturers that make equipment for schools, there are often many options available to districts looking to make those much-needed upgrades.


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Canadian Groups Assess Hydronics Training Programs

CHC to Administer Certification Exam in Partnership with NAIT
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Moving forward, all partner organizations will seek to train or support training to the agreed learning standards, culminating in a certification exam that will be administered by the CHC in partnership with NAIT. 


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A Look at Today’s Geothermal Heat Pumps

New Residential Geothermal Products Feature Higher Efficiencies, Renewable Qualities
By Joanna R. Turpin
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Geothermal heat pumps are among the most efficient and comfortable heating and cooling technologies currently available because they use the earth’s natural heat to provide heating, cooling, and, often, water heating. 


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Expansion Tank Pressurization

Improper Air-side Pressurization ‘Wastes’ some of the Internal Volume
By John Siegenthaler, PE
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Having the proper air-side pre-pressurization prevents system water from entering the expansion tank, until the water begins expanding due to heating. 


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Bosch Thermotechnology: Residential Gas-fired Boiler

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Bosch has replaced its Buderus GC124 residential gas-fired boiler with the new precision cast GC144 boiler, a compact Energy Star-compliant boiler capable of delivering best-in-class 85 percent AFUE. 


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Lochinvar LLC: Fire Tube Boiler

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The FTXL™ Fire Tube Boiler for light commercial applications comes in five models ranging from 399,999-850,000 Btuh. 


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HVAC Residential Equipment: Efficiency, Installation Ease Grab Awards

Rheem Professional Prestige™ Hybrid Electric Heat Pump Water Heater Wins Gold
By Angela D. Harris
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The NEWS honors the 2014 Dealer Design Award winners in the HVAC residential equipment category.


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HVAC Commercial Equipment: Winners Invest in Design

Mitsubishi Electric Cooling and Heating Earns Gold
By Angela D. Harris
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The NEWS honors the 2014 Dealer Design Award winners in the HVAC Commercial Equipment category.


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Multimedia

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2014 Energy Efficiency Forum

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

Podcasts

NEWSMakers: Joseph Groh

Joseph Groh, an industry veteran boasting 35 years of HVAC experience, discusses the 2008 bicycle accident that cut his career tragically short, and how the Joseph S. Groh Foundation is his way of giving back to the construction trade. Posted on Aug. 22.

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ACHRNEWS

NEWS 08-25-14 cover

2014 August 25

Check out the weekly edition of The NEWS today!

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Prohibiting HFCs

EPA is proposing a rule that would prohibit some HFCs in select refrigeration applications. Do you agree with this move?
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HVACR INDUSTRY STORE

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2014 National Plumbing & HVAC Estimator

Every plumbing and HVAC estimator can use the cost estimates in this practical manual!

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