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Home » Topics » Columns

Columns
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1974 living room

Dan Holohan: Electrification may become more mainstream, but not overnight

Times change
Dan Holohan
Dan Holohan
May 2, 2023

Morris had me on the phone. It was 1974 and he was calling from Brooklyn, New York. I had a waxed handlebar mustache that year, and my workmates at the manufacturers’ rep were calling me Rollie Fingers because he was pitching for the Oakland Athletics in the World Series.


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Variable-speed heat pump

John Siegenthaler: Eyes for a heat pump — part two

Variable-speed heat pumps allow a better match between the rate of heat production and the rate of heat dissipation by the load.
John Siegenthaler, P.E.
John Siegenthaler, P.E.
May 1, 2023

Last month, we discussed the role of buffer tanks in combination with air-to-water and water-to-water heat pumps that operate as “on/off” devices. The key concept was to turn the heat pump on and off based on changes in the buffer tank temperatures and not based on thermostats calling for heat.


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drinking water

Nicole Krawcke: The war on forever chemicals

First-ever national drinking water standard proposed for PFAS.
Nicole Krawcke head shot 2024
Nicole Krawcke
April 12, 2023

Last month, the Biden-Harris Administration announced it is proposing the first-ever national drinking water standard for six per- and polyfluoroalkyl substances (PFAS). The proposal, if finalized, would regulate PFOA and PFOS as individual contaminants, and will regulate four other PFAS — PFNA, PFHxS, PFBS and GenX Chemicals — as a mixture.


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workforce puzzle

Frank Favaro: 3 ways to win back employee loyalty

Losing top talent can be costly.
Frank Favaro
Frank Favaro
April 11, 2023

Recent LinkedIn studies show that more than half of the workforce is open to exploring new employment opportunities. That means there is a good chance that as you read this article, you have people assessing their employment options in your company.


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water quality
Guest Editorial | David Ratliff

Water shortages series: The plumbing industry must come together to solve water scarcity and sanitation issues

Part one in a series exploring water shortages and possible solutions
David Ratliff 200px
David Ratliff
April 10, 2023

It was August 2019 when I was last published in PM magazine. I wrote about the failure of cast iron soil pipe, which now has customers often waiting two weeks or often longer for a plumber. As the plumbing instructor at Ultimate Technical Academy, the administration is adding classes to accommodate the need for plumbers as quickly as possible.


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boilers are still a great heating source

Ray Wohlfarth: Why boilers are still a great heating source

A tale of educating young minds.
ray wohlfarth
Ray Wohlfarth
April 7, 2023

"According to the ASHRAE HVAC Applications Handbook, the estimated life of an air-to-air heat pump or a rooftop unit is 15 years while a boiler life expectancy is between 24-35 years, depending on the boiler type. So, you will install two heat pumps or rooftop units for every boiler. Where do you think those old units will end up?" I ask the class.


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Legionella

Matt Michel: Let's talk scalding

Plumbers need to inform customers of the risks, tradeoffs and solutions available to them.
Matt Michel
Matt Michel
April 6, 2023

Scalding in the home or burns from hot liquids is dangerous to anyone, but is a particular concern to the youngest and oldest Americans. Plumbers are charged with protecting the health of the nation. Thus, plumbers can play a key role in reducing the risk, starting with homeowner education.


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domestic hot water heat pump

Dave Yates: AHR 2023 — it's a wrap

DHW trends from the show floor.
Dave Yates
Dave Yates
April 5, 2023

Attending trade shows both large and small have always been an integral part of keeping our business abreast of changes within the PHVAC industry. Our employees knew that upon my return, there would be new innovative products joining the tried and true offerings we provided for our customers.


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leadership

Kenny Chapman: Improving leadership effectiveness

Key characteristics of successful leaders.
Kenny Chapman
Kenny Chapman
April 4, 2023

In order to be an effective leader, you need to first understand what leadership actually is. Many people mistakenly believe that leadership is simply overseeing a group or organization. However, there's much more to it than that. Effective leaders possess a number of qualities that allow them to successfully navigate through challenges and inspire others to do the same.


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thermostat

Dan Holohan: Do you miss the T87

Though many have moved on to smart thermostats, several T87s are still in use today.
Dan Holohan
Dan Holohan
April 3, 2023

In 1885, when you could still buy a milk cow for $29.70, Albert Butz, a Swiss immigrant living in St. Paul, Minnesota, invented what he called the damper-flapper. He patented it the following year. The flapper opened a damper that allowed outside air to enter a coal-fired home furnace. This increased the oxygen in the furnace and made the fire burn hotter. When the temperature rose to a desired point, the damper closed.


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