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Home » Authors » Eric Kjelshus

Eric Kjelshus

Eric Kjelshus, owner of Eric Kjelshus Energy, Greenwood, Missouri, is a master mechanical contractor and master pipe fitter. He holds multiple certifications from North American Technician Excellence (NATE), Refrigeration Service Engineers Society (RSES), Building Performance Institute (BPI), and National Comfort Institute (NCI). He can be reached at eric.energy@gmail.com. For more information, visit http://ericsenergy.com.

Articles

ARTICLES

Why You Always Test for Gas Leaks When Touching any Part of a Building

Who would have thought that an unsightly chimney provided clues to the source of a hidden gas leak?
Eric Kjelshus
June 8, 2015

On a recent call to replace an aging gas boiler, the owners reported a persistent gas smell. The gas company had previously inspected the building and couldn’t find a leak. Yet the smell continued. The point is, if you smell gas, however subtle the smell, there is a gas leak. Somewhere. The challenge can indeed be where to find it.


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Chimney Fundamentals: The Science of Venting Flue Gases - Part 3

How to Keep Your Customers Safe as Well as Comfortable
Eric Kjelshus
April 20, 2015

Water is a byproduct of combustion. If the proper venting of flue gases is neglected — as is so often the case — water in the form of condensation triggers serious safety and comfort issues for our customers. As professionals, we must pay more attention to flue gas temperatures and the conditions of the flue during our service calls.


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Chimney Fundamentals: The Science of Venting Flue Gases - Part 2

How to Keep Your Customers Safe as Well as Comfortable
Eric Kjelshus
January 19, 2015

Gas appliances are divided into four venting categories based on vent operating pressure and whether they are condensing or non-condensing. Category I is negative pressure, non-condensing. Category II is negative pressure, condensing. Category III is positive pressure, non-condensing. Category IV is positive pressure, condensing.


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Chimney Fundamentals: The Science of Venting Flue Gases - Part 1

How to Keep Your Customers Safe as Well as Comfortable
Eric Kjelshus
October 20, 2014

This multiple-part article series will discuss the basics, codes and standards, and the science behind chimneys. It will show how back drafting affects chimney performance, while explaining the principles of positive pressure. It will explain how to create and use positive pressure so chimneys will draft for safety and performance.


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