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Getting the Most Out of Blower Door Test Results
Understanding blower door calculations beyond air exchanges per hour at 50 Pascals can yield useful information for achieving efficiency goals
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Three Types of Heat Pumps
Pros and cons of single-, two-, and multi-stage heat pumps for heating and cooling
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Hydrogen and Replacing Fossil Fuels
A color-coded guide to the most abundant element in the universe, hydrogen, which is poised to play a large role in phasing down fossil fuels and cleaning up the grid
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How Well Do You Understand Psychrometrics?
Test your knowledge of the science of moist air and how it behaves under different environmental conditions
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Addendum to Continuous Insulation Series
This update sheds light on ICC processes and how they can impact the reading of codes, plus how to satisfy R-value requirements using wall cavity insulation only
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Hot Water System Retrofit
A DIY engineered hot water system uses a hybrid water heater in heat pump–only mode with a high-efficiency boiler and indirect heater
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Sizing a Heat Pump System for Cooling
Remember this rule of thumb: 5 tons is never the answer
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Open-Loop vs. Closed-Loop Ground Source Heat Pumps
Some basics on the two types of GSHP systems and cautionary advice against a side-by-side comparison
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Continuous Insulation, Part 1
A look at the 2021 IRC prescriptive path to continuous insulation and its benefits
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Hotels Have a Humidity Problem
One book tour, 13 nights, 8 hotels and a lot of data on dew point temperature, plus the answer to the question of why hotels are so cold
