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Home » Authors » Ray Wohlfarth

Articles by Ray Wohlfarth

PHCN1129_Fig1-boiler heat stain.jpg
Boiler Room Detective

Would This Boiler Scare You? It Should.

Combustion problems can damage equipment and increase the risk of carbon monoxide or fire.
November 2, 2026
Ray Wohlfarth

If you walked into a boiler room and saw the discoloration on the boiler jacket in Figure 1, would you be concerned? Should you. Absolutely.


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iStock-2165784287.jpg
Boiler Room Detective

Key Operational Differences Between Space-Heating and Brewery Steam Systems

Practical design concerns — oxygen corrosion, flash steam, boiler and pipe sizing, and the need for steam systems to ‘breathe’ — make brewery boilers more complex and risk-prone than typical comfort-heating boilers.
October 1, 2026
Ray Wohlfarth

One morning, when microbreweries were starting to pop up, a brewer called and asked if I knew brewery steam systems.


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iStock-179789656.jpg
Boiler Room Detective

Why Consider a Hybrid Boiler Plant?

This approach can improve seasonal efficiency while controlling installation and maintenance costs, extending equipment life, preserving reliability and allowing boiler types to run when they perform best.
September 1, 2026
Ray Wohlfarth

While teaching a class on hybrid boiler plants at the Association of Higher Education Facilities Officers’ conference for university facility managers, I noticed one attendee sitting in the back of the room with his arms folded and a skeptical look on his face.


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PHCN0826_4 smaller boilers.jpg
Boiler Room Detective

Why Four Small Boilers Often Beat Two Large Ones

Modular boiler plants offer a smarter path to reliability and efficiency, using staged operation to match real building loads while simplifying maintenance and reducing long-term costs.
August 3, 2026
Ray Wohlfarth

The first modular boiler room I walked into had four small boilers. My immediate reaction was, “Why would anyone buy four boilers when two larger ones would do the same job?” 


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PHCN0726_leaks under insulation.jpg
Boiler Room Detective

First Five Minutes in a Boiler Room

From leaks and rust to banging pipe and strange odors, the warning signs are there if you know how to read them. Spotting them early can prevent injury, CO exposure and costly failures.
July 7, 2026
Ray Wohlfarth

Within the first minute, I knew something was wrong. It wasn’t anything I could smell, hear or see; it was something I felt. After nearly 40 years working in boiler rooms, I’ve come to trust what I call my “Spidey Sense.”


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PHCN0626_air-source heat pump.jpg
Boiler Room Detective

Hybrid Heating: Why Heat Pumps and Boilers Make a Great Team

Most hydronic systems rarely need maximum water temperatures; strategies such as outdoor reset controls and smart lead lag sequencing reduce energy use, wear and emissions.
June 1, 2026
Ray Wohlfarth

Discover how pairing an air-to-water heat pump with a traditional boiler cuts energy bills, lowers emissions, and extends equipment life.


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PHCN0526_Limit Control.jpg
Boiler Room Detective

Understanding Steam Boiler Pressure Controls

Modern comfort-heating steam boilers are designed to operate at very low pressures. Improper pressure control settings can lead to inefficiency, equipment damage or dangerous conditions.
May 4, 2026
Ray Wohlfarth

Master the critical difference between subtractive and additive steam pressure controls to ensure your boiler systems run safely, efficiently, and without unnecessary service calls.


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PHCN0426_12 psig.jpg
Boiler Room Detective

Steam for Brewing and Distilling vs. Steam for Comfort Heating

Understanding the differences is critical for efficiency, reliability, corrosion control and long boiler life.
April 1, 2026
Ray Wohlfarth

Discover the critical differences between comfort heating and process steam to ensure your brewery or distillery boiler operates with maximum efficiency and a long lifespan.


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PHCN0326_steam boiler with insulation.jpg
Boiler Room Detective

Replacing a Steam Boiler: What Every New Technician Needs to Know

Focus on correct sizing to the connected load, inspect and upgrade system components and address the root causes of previous boiler failures.
March 2, 2026
Ray Wohlfarth

Mastering steam boiler replacement requires moving beyond standard HVAC habits to focus on connected load sizing, proper near-boiler piping, and system-wide diagnostics that ensure long-term reliability.


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PHCN0226_Wrong probe location.jpg
Boiler Room Detective

Combustion Readings

Do it right, document it and sleep better at night, and leave Low-Bid Pete in the dust.
February 2, 2026
Ray Wohlfarth

Stop debating the best season for boiler maintenance and discover why performing a combustion analysis on every single service call is the ultimate move for safety, liability protection, and professional pride.



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