Featured Stories

Innovative Products Improve IAQ

Four Manufacturers Earn Top Product Honors at 2015 AHR Expo

From energy recovery ventilators (ERVs) to filters and compressor technology, these manufacturers are pulling out the stops to meet consumer demand for better IAQ at home, work, school, and everywhere in between.


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The Professor: Diagnosing Compressor Motor Overheating

Performing a Three-phase Compressor Voltage Check, Step by Step

Voltage unbalances exceeding more than 2 percent in three-phase systems can cause current unbalance among the windings. These voltage and current unbalances can cause an increase in winding temperature and an overheating problem that can be detrimental to the motor.


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Ice Breaker: What is Superheat?

Defining Vapor Refrigerant Temperature and its Impact on System Performance

Measuring the evaporator’s superheat value is an important part of analyzing a system’s performance. If a lower-than-normal value is measured, too much refrigerant is entering the evaporator for the heat load. If a higher-than-normal value is measured, too little refrigerant is entering the evaporator for the heat load. 


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Contractors Eye Refrigerant Regulations

California’s Impact Felt in Remaining 49 States

The aggressive environmental and regulatory positions in Sacramento have caused the rest of the U.S. to monitor policymaking and enforcement out West. And, more often than not, those policies have ended up as the blueprint for federal regulations.


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2015 ACCA Conference

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

Podcasts

NEWSMakers: Mark Crockett
Mark Crockett vice president, Crockett Facilities Services, explains the importance of technician training, the value of being a top minority-owned company in the U.S., current projects the company is managing, and much more. Posted on April 24.
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ACHRNEWS

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2015 May 4

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HVACR INDUSTRY STORE

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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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