Construction defect investigations rarely fit neatly into a single engineering discipline. A water intrusion issue may involve the building envelope, roofing, windows, structural components, or mechanical systems. A failure that appears structural may have its origins in design, installation, materials, or an adjacent building system. And when plumbing, HVAC, electrical, or equipment issues enter the picture, understanding the interaction between systems can be critical to determining what happened and why. Read More
The United States Department of Energy (DOE) finalized energy efficiency standards for residential gas furnaces in late 2023. These new standards are slated for implementation in late 2028. The last time the DOE raised the efficiency rating of gas furnaces was in 2007, when the minimum efficiency for gas fired furnaces was raised from 78% to 80% efficient.
Let’s look at what efficiency means in this context. In simple terms, Read More
As we ring in the new year 2025, a significant change is coming for several heating, ventilation, air conditioning and refrigeration (HVACR) systems that are currently used in both residential and commercial applications. The 2020 American Innovation & Manufacturing (AIM) Act is bipartisan legislation that was signed into law. The AIM legislation empowers the Environmental Protection Agency (EPA) to reduce the production and consumption of hydroflourocarbons HFCs by 85 percent by the year 2035. Read More
What materials are suitable for installation in Heating, Ventilation, and Air Conditioning (HVAC) plenums? Let’s first define a plenum. The 2021 edition of the International Mechanical Code (IMC), a subset of the International Building Code (IBC), defines a plenum as “an enclosed portion of a building structure, other than the occupied space being conditioned, that is designed to allow air movement, and thereby serve as a part of an air distribution system.” Read More
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