Allison Bailes III

Allison Bailes writes the “Energy Vanguard” blog for the company of the same name, which he founded in 2008, and he contributes to GreenBuildingAdvisor.com’s “Building Science” blog. The holder of a Ph.D. in physics from the University of Florida, he has also built a high-performance home out of structural insulated panels, run a home-performance company, and worked as regional manager for a green-building program.

Plumbing Upgrade for Faster Hot Water
Building science consultant Allison Bailes shows how to add a new water-distribution manifold and smaller pipes to decrease the time it takes for hot water to reach faucets.
Is a Heat Pump More Efficient Than a Furnace?
The net efficiency of a heat pump might be no better than a gas furnace but that doesn't mean they aren't a good option.
Fiberglass Is Still Home Builders’ Number One Insulation Choice
Building scientist Allison Bailes reviews the problems, myths, and best practices associated with fiberglass insulation.
Is R-8 Duct Insulation Enough?
Code requirements are always a compromise between what’s best and what’s practical.
Five Types of R-Value
There’s a lot more to an insulation's resistance to heat flow than the number on the package.
Air-Sealing the Ceiling Joists in an Attached Garage
Garage ceiling joists present a challenge for creating a continuous air barrier; a little forethought makes it a lot easier.
The Best Reason to Have an All-Electric Home
When you have to make a choice between electricity or natural gas, it's clear that electricity is better for the environment and maybe for your checkbook, too.
Three Types of Heat Pump Heat
Conventional heat pumps can provide pumped heat, supplementary heat, or emergency heat, depending on how cold it is outside.
Bad Ducts = Bad Air
Higher energy bills and lower comfort levels aren’t the worst effects of faulty ducts.
Joe Lstiburek’s Ideal Double-Stud Wall
This wall design ensures good performance and solves the problems of inside and outside moisture.

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