Technical

Tune Up Your Cooling System Now

When the weather is warm outside, it’s imperative to make sure that your building’s mechanical cooling systems are working at maximum efficiency. Since budgets are still tight, nobody wants high energy costs or, worse, an equipment failure. The best way to avoid these bad scenarios is to perform a cooling system tuneup.
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Honeywell Helps Housing Authority Improve Facilities and Comfort

Honeywell has announced an $18.8 million energy conservation and building modernization program with the Yonkers Housing Authority that will help improve its facilities, energy efficiency, and resident comfort and save an estimated $1.4 million in annual utility costs. It will also create opportunities for local subcontractors.
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CPVC vs. Stainless Steel Venting Systems

Chlorinated polyvinyl chloride (CPVC) first made its way into the world of venting systems in the residential market. Recently, CPVC has been used to vent Category IV high-efficiency boilers. While it can cost up to 20 percent less than stainless steel, those specifying venting systems should consider other differences that may impact boiler efficiency and present potential safety hazards. 
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Using Thermography to Reduce Residential Energy Use

Thermography uses an infrared camera (thermal imager) to capture two-dimensional representations of the surface temperatures of parts of buildings. Often, those images reveal temperatures or temperature differences that indicate conditions contributing to the waste of heated or cooled air and, as a result, needlessly excessive energy costs.
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Basic Thermodynamics for Refrigeration and Air Conditioning - Part 2

A basic HVAC system shows the application of the Second Law of Thermodynamics. The compressor adds energy to the refrigerant, and it becomes hot, just the way a hand operated tire pump does. Since the compressed refrigerant is hotter than the air blowing across the condenser, the heat will flow to the cooler air. This is a transfer of heat energy out of the refrigerant.
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2015 ACCA Conference

Images from the 2015 ACCA Conference in Grapevine, Texas. Posted on April 8, 2015.

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NEWSMakers: Clint Schreck

Clint Schreck, general manager, Columbus Worthington Air, Columbus, Ohio, discusses winning Angie’s List Super Service Award, how to handle online reviews, and much more.

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2015 May 18

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2015 National Plumbing & HVAC Estimator

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

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