Recent Articles
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Details for a “High-Performance Garage”
An insulated slab, Larsen truss wall system, careful air-sealing, and dense-packed insulation in deep cavities mitigate heat losses at a garage door
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Not All Moisture on Surfaces is Condensation
"Moisture accumulation" is a better term to use when talking about porous materials like wood
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Understanding Wet Bulb Temperature
The "temperature of evaporation" is the lowest temperature that can be reached under ambient conditions by evaporation of water only. And it can be measured.
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7 Ways Indoor Air Can Be Made Bad
Good indoor air quality is easily ruined by unthinking occupants
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Introducing the 120-volt Plug-in Heat Pump Water Heater
The good news is the model can save thousands of dollars. The downside is limited backup heat, which could mean running out of hot water.
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Common Mechanical Room Obstructions
When designing a new house, give thought to where the ducts will go and exactly how they will get there
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7 Tips for Good Indoor Air Quality in Winter
While most of this advice applies year-round, there are a few nuances related to improving indoor air quality during the winter months
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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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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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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