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HVAC Design Requirements in the International Building Codes
A look at what the codes actually require for load calculations and duct design
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Converting Heating and Cooling Loads to Air Flow Needs
Here’s how Manual J software takes your inputs and gives you both the BTU/hour and cfm needed for each room
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Interior Waterproofing of Basement Walls
Testing waterproofing products used in foundation applications to determine how they handle hydrostatic pressure
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Is a Ventless Fireplace More Efficient Than a Condensing Furnace?
An energy conversion conundrum for building science geeks
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Advice for Getting the Most Out of Your Insulation Contract
Hint: The same amount of insulation doesn’t always give you the same R-value
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Installing Insulation With the X-Floc Ventilated Dry Injection System
A Massachusetts company claims, “We don't just do cellulose; we do it better.”
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Is R-8 Duct Insulation Enough?
Code requirements are always a compromise between what’s best and what’s practical
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Kingspan Kooltherm Phenolic Foam Rigid Insulation
A deep-energy-retrofit project uses Kooltherm as part of a high-performance attic insulation system
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Adjusting Bath Fan Use in Winter
Do you really need to run it when you shower?
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Ventilating a Home in Cold Weather
You need fresh air, but bringing in cold outdoor air can cause problems