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Home » Authors » John Mullen
John Mullen

John Mullen

John A. Mullen, a fourth-generation plumber, brings nearly two decades of experience and a passion for intelligent, sustainable systems to the plumbing and mechanical industry. From apprentice to executive, he has led many complex projects and driven industry-wide safety and compliance initiatives. Mullen’s dedication to the field continues to drive forward the tradition of ensuring safe and efficient plumbing systems for the public.

Articles

ARTICLES

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The Future Is Now

Rainwater and Stormwater Harvesting: Plumbing’s Next Frontier

Plumbing professionals play a pivotal role in advancing these systems through smart design, advocacy and integration with modern technology.
June 2, 2025
John Mullen

Discover how plumbers can lead the water revolution by turning stormwater into a sustainable resource for homes, towns, and entire cities.


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The Future Is Now

It’s Alive: Advanced Materials Create the Age of ‘Living Pipe’

The future of plumbing is set to transform from passive infrastructure to active, intelligent systems that safeguard our vital water resources.
May 1, 2025
John Mullen

What if your plumbing could detect problems, fix itself, and send you a receipt—all before you even knew there was an issue? Industry veteran John A. Mullen introduces “Living Pipe,” a visionary concept combining AI, self-healing materials, and advanced sensors to create truly intelligent water infrastructure.


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The Future is Now

Using Artificial Intelligence with Purpose

Openness to learning and adaptability is crucial for construction professionals to thrive in an evolving technological landscape.
April 3, 2025
John Mullen

Key insights from a recent panel at the 2025 AHR Expo reveal how AI enhances efficiency through automation, predictive analytics and smart tools such as Meta glasses. 


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The Future is Now

Fluoridation Nation

With greater understanding, we can make informed decisions about fluoride removal and ensure safe drinking water for future generations.
March 3, 2025
John Mullen

Fourth-generation plumber John A. Mullen delves into the growing trend of removing fluoride from municipal drinking water and its broader implications.


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The Future Is Now

Teaching Through New Eyes

Embracing innovation with intention and thorough transparency ensures the skilled trades remain valuable, built on tradition and progress.
February 3, 2025
John Mullen

Columnist John Mullen explores the transformative impact of augmented and virtual reality on skilled trades education.


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The Future Is Now

New Year, New Fuel: A Hydrogen Story

With every advancement and safety standard, we’re preparing for a future where hydrogen and other water-sourced energy solutions play central roles.
January 6, 2025
John Mullen

Hydrogen fuel can significantly reduce carbon emissions, improving air quality and health; hybrid systems combining hydrogen with other energy sources could enhance grid stability and flexibility.


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The Future Is Now

Smart Home Solutions

They’re about creating sustainable and data-driven environments that can adapt to our lives and be helpful and solutions-driven.
November 18, 2024
John Mullen
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The Future Is Now

Liquid-Cooled Data: Balancing Innovation and Sustainability

It is the simplest and most elegant solution to a carbon-neutral future.
November 1, 2024
John Mullen

Today’s data storage centers require considerable amounts of additional energy. Air-cooled systems have been the norm for data storage; however, liquid-cooled systems can handle greater internal heat displacement. This makes them ideal for energy-hungry AI tasks and preserving electricity.


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The Future Is Now

Long Live the Bidet

Why won’t Americans adopt this environmentally hygienic habit?
October 24, 2024
John Mullen
Plumbing professional John Mullen discusses the benefits and challenges of adopting bidets in American households for environmental and hygienic reasons, as well as the importance of safety compliance and proper installation.


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The Future Is Now

Water, Entropy and the Future of Energy Management

With unparalleled capacity to store and transfer energy, water can be a viable solution to a sustainable and resilient world
September 2, 2024
John Mullen
Thermal energy networks help buildings communicate with each other in warmth and coolness through piping networks. New columnist John Mullen explains how these shared energy networks use “waste” heat from sewage wastewater, collected stormwater or existing fire suppression systems to use elsewhere in buildings. 


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