Extra Edition

Btu Buddy 145: Wrong Part Causes a Problem

Bob and Tim were on their way to a service call at a store that has a frozen heat pump outdoor unit. It is late in the season and the customer called and said, “Our outdoor unit is frozen solid with ice.” After they arrived and talked to the owner, Bob said, “Let’s put the unit through a forced defrost.”

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Chimney Fundamentals: The Science of Venting Flue Gases - Part 3

How to Keep Your Customers Safe as Well as Comfortable

Water is a byproduct of combustion. If the proper venting of flue gases is neglected — as is so often the case — water in the form of condensation triggers serious safety and comfort issues for our customers. As professionals, we must pay more attention to flue gas temperatures and the conditions of the flue during our service calls.

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Precision Announces It Is Moving to HFO Refrigerant Blends for Its Freezers and Blast Chillers

British Firm Calls on Fellow Manufacturers to Ditch High-GWP R-404A as It Sees 4 Percent Energy Benefit with R-448A

British refrigeration manufacturer Precision has announced that, following extensive testing, it will phase out use of R-404A refrigerant in the next few weeks, and move to the HFO blend R-448A, Honeywell’s Solstice N40 for all its freezer and blast chiller products.

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HDPE Cooling Towers Get the Noise Out of Symphony Hall

Quiet Operation of High-Density Polyethylene Units Eliminate Sound Problems from HVAC System

Imagine attending a symphonic concert, and right in the middle of a violin solo you hear a rushing sound penetrating the ceiling above the orchestra and overwhelming the concert hall’s painstaking acoustic design.

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Image Galleries

2015 ACCA Conference

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


NEWSMakers: Leslie McDowell

Leslie McDowell, director of communications at the Building Performance Institute Inc., discusses the nonprofit organization's new homeowner centric website. Posted on April 10.

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NEWS 04-20-15 cover

2015 April 20

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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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