Archive Of Previous Articles By Gerry

Below are links to articles written by Gerry Wagner for industry related magazines. Sizing Mini Split Systems – Don’t Oversize, Choose the Right Equipment Contractor magazine January 10, 2013 Renewable Energy is Making the Trades Sexy Again HeatSpring Magazine October … Continue reading

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Q3 2016 ESPCO Newsletter

DID ARCHIE BUNKER DESTROY OUR IMAGE? If you are under the age of 40, you probably don’t know who Archie Bunker is…keep reading, I’ll get to it. I have been talking and writing about this subject for over 20 years now…this … Continue reading

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Q1 2016 ESPCO Newsletter

HVAC contractor liability insurance for acts of terrorism? It’s that time of year again, when my insurance carrier informs me that they will renew my contractor liability insurance policy and in doing so, send me a copy of the policy along with … Continue reading

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August / September 2015 ESPCO Newsletter

A lesson learned from a recent multi-zone mini split installation. I recently installed a two zone mini split heat pump in my auto mechanic’s shop, (see the next article about what I call “trade bartering”). It was a fairly straight … Continue reading

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April / May 2015 ESPCO Newsletter

One of the most common questions I get when conducting mini split training classes is…”can you put electric back-up heat in a mini split evaporator?” The answer is YES! My newest “training partner” are the fine people of ECR International … Continue reading

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February / March 2015 ESPCO Newsletter

Do “waterside economizers” with commercial water source heat pumps really save energy? In a recent class on Commercial Water Source Heat Pumps (CWSHP), the subject of “WaterSide Economizers WSE” came up in a couple questions from the audience. I have … Continue reading

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THE NEWS 2014 BEST TRAINER

Click here to read about Gerry in the 11/24/14 issue ACHR The News

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November / December 2014 ESPCO Newsletter

Mini splits in computer server rooms…good idea? I get asked a lot about one of the most common commercial applications of mini splits…computer server rooms. A common concern is the equipment’s ability, (or lack thereof), to cool the room at … Continue reading

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July / August 2014 ESPCO Newsletter

Did you know that New Orleans is built on a swamp? I was asked that question at a recent mini split class I conducted at my new friend’s, Tommy Flick, Flick Distributing Company, training facility in Harahan, LA. I think … Continue reading

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May / June 2014 ESPCO Newsletter

What is the definition of ‘critical charge’? The American Society of Heating, Refrigeration and Air Conditioning Engineers (ASHRAE), defines ‘critical charge’ as follows: “Refrigerant quantity required by a system to maximize performance when a capillary or fixed restriction expansion device … Continue reading

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January / February 2014 ESPCO Newsletter

Why is Commercial Water Source Heat Pump (CWSHP) technology the best kept secret in HVACR? I have been preparing for a two week tour of the Pacific coast which will include a couple ‘Introduction to Commercial Water Source Heat Pump … Continue reading

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