Jack Sine

Jack Sine

Jack Sine is a freelance writer specializing in HVAC, green building, and IAQ issues. He can be reached at jack.sine@verizon.net or at 845-831-6578.


CHP Gaining Widespread Interest

Reduced Costs, Accurate Metering, and Freedom from the Grid are Key
July 28, 2014

As long as accurate measurements are included, CHP adds up to a win-win for most everyone involved.

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Wireless Instruments Increase Accuracy, Streamline Service

Do It Better and Shorten Time on the Job
February 17, 2014

Successful contractors are always looking for ways to be more efficient and do a better job. Using wireless instruments to take all measurements simultaneously can make the job easier and better, resulting in quicker, more accurate diagnoses and a system that’s optimized for peak performance. 

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Variable-Speed Pumps Reduce Energy Use

Ultrasonic Flow Meters are Key to Controlling Energy Management
October 28, 2013

WM Group recently helped a large New Jersey pharmaceutical company save nearly $400,000 per year in energy costs by upgrading the chiller system at its 100-acre research and development campus.

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Variable-Speed Pumps Reduce Energy Use

Ultrasonic Flow Meters are Key to Controlling Energy Management
August 5, 2013
Hemant Mehta’s WMGroup must be doing something right because his team has been fine-tuning HVAC systems for the same major New Jersey pharmaceutical company since 1984. The latest improvement involved the upgrading of the chiller systems at the company’s 100-acre research and development campus.

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Seasonal Tune-Ups Help Minimize Problems

April 29, 2013

Most people schedule a preseason tune-up for their air conditioning system before the hot weather starts. If they did the same for their furnaces before the heating season, this complaint could be prevented. 

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Wisconsin School District Fights IAQ Problems

October 11, 2010
Two of the most common sources for poor IAQ are mold and bacteria and Jon Zickermann knew he had a problem with both. As director of maintenance and operations at the Mequon-Thiensville School District in Wisconsin, he had the responsibility to protect the health and quality of life for students and faculty in six schools.
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The Right Stuff for Use in the Field

June 28, 2010
Often called “tools of the trade,” the instruments and tools a technician has in his bag are almost as important to him as his expertise. If one of his tools fails or is inaccurate, it can really ruin his day and do damage to his employer’s business. In the case of Warren Brader and his crew, lives could literally hang in the balance.
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How to Get Accurate Measurements

June 11, 2007
While accurate superheat and subcooling measurements have always been important, the push for higher SEER ratings has added importance to operating efficiency. That efficiency can be maintained with precise superheat and subcooling measurements.
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ERV Comes of Age for DX Systems

March 19, 2007
Energy recovery ventilation (ERV) has been on the scene for years. More recently, however, all major HVAC OEMs and nearly all smaller manufacturers have engineered ERVs to be a standard option on DX systems. It also has a growing popularity among engineers, contractors, and building owners.
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Instruments Make Techs' Jobs Easier and Safer

September 11, 2006
Instrument companies have found that HVACR technicians are demanding instruments that offer a more compact design that require less space, offer greater safety, and are easy-to-use when measuring the large number of parameters required by their jobs. The response by some manufacturers has been modular design.
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Image Galleries

Mini Split Installation

Twin Cities contractor Aabott Ferraro helped retrofit an older St. Paul home.


NEWSMakers: Jeff Nusz

Jeff Nusz, president, Reitmeier HVAC Services, Tualatin, Oregon, joins the program to discuss how he modernized his website and gained new clients and more money because of it. We’ll go through the process of the change and much more.  Posted on Aug. 1.

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2014 July 28

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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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2014 National Plumbing & HVAC Estimator

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

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