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Controlling Humidity in Museums

HVACR Industry Roars Back in 2013

HVAC Contractors Crack Down on Distracted Driving

Screw Compressor Teardown: A Few Basics - Part 2

Easing Chiller Install and Service

Contractor Tips for Chiller Maintenance

Charging Methods for Metering Devices

Oil Pressure Problems in Refrigeration Systems

An Update On R-22 Alternatives

Screw Compressor Teardown: A Few Basics - Part 1

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Compressor, ACR, and High-Performance Conferences to Be Held in July

March 26, 2012

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Purdue University will host three concurrent conferences with HVACR emphasis July 16-19. The concurrent conferences are the 21st International Compressor Engineering Conference, the 14th International Refrigeration and Air-Conditioning Conference, and the 2nd International High Performance Buildings Conference.

Two New Refrigeration Terms That You’ll Want to Know

March 26, 2012

By Peter Powell

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Move over compression ratio, ring valve, and reciprocating compressors. There are two new terms to add to your refrigeration terminology: ‘bi-volt’ and ‘spool.’ The words relate to some of the newest developments in compressor applications.

More Products from the AHR Expo

March 12, 2012

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Here are additional products that were exhibited at the 2012 AHR Expo, including components and software.

New Products Displayed at the AHR Expo

February 13, 2012

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The NEWS reports on new products found by our editors at the recent AHR Expo in Chicago. Products are listed in alphabetical order within each category.

Emerson Climate Technologies: Compressor Diagnostic Modules

January 23, 2012

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The CoreSense™ Diagnostics electronics modules in Copeland Scroll® compressors unlock advanced capabilities in fixed-speed and two-stage compressors. Designed to help contractors troubleshoot residential air conditioning systems, the modules use the compressor as a sensor.

Power Trends Drive Change at Danfoss

January 23, 2012

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Time of use (TOU) rate structures have long been touted as a necessity for utility companies to incentivize homeowners and building owners enough to embrace demand response systems. According to John Galyen, president of Danfoss North America, “Smart meters will change the game.”

Devilish to Diagnose

January 9, 2012

By Mike Gray

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Low pumper compressors can be devilish to diagnose properly. None of us wants to replace a compressor that is not bad. With more than 40 years of experience, I want to offer some thoughts.

Compressor Line Expands

November 28, 2011

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In recent months, Tecumseh Products Co. has made a number of announcements related to a line of refrigeration compressors that are optimized for HC refrigerants, an expansion of its line of large frame rotary compressors, and the introduction of direct current (dc) compressors.

Emerson Climate Technologies: Variable-Speed Compressor

November 28, 2011

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Designed for high-efficiency heat pump and air conditioning systems, the new Copeland Scroll® variable-speed compressor allows heat pumps to achieve 13 HSPF, 20-plus SEER efficiency, and 40 percent greater year-round energy savings than standard heat pumps, says the company.

The Professor: Bad Compressor Valves

November 7, 2011

By John Tomczyk

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Many servicemen experience service calls where the compressor has both a low head pressure and a high suction pressure. There are three main reasons why a compressor will simultaneously have a low head pressure and a high suction pressure.

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2013 ACCA Conference & IE3 Expo

Photos from the 2013 ACCA Conference & IE3 Expo in Orlando, Fla.

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Selling Zoning is Easier Than You Might Think

This overview of the benefits of zoning includes tips for selling to consumers and businesses. Tom Jackson discusses options for new construction and retrofit, as well as some ways a residential contractor can get into the light commercial business with zoning products. Speaker: Tom Jackson, CEO, Jackson Systems

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