The complete source for building, designing, and remodeling green homes
Editor Martin Holladay has worked as a roofer, remodeler, builder, and plumbing wholesale counterperson. He built his first passive solar house in northern Vermont in 1974, and has lived off the grid since 1975. In 1980, Holladay bought his first photovoltaic module, which is still producing electricity after all these years.
After the 1988 Armenian earthquake, Holladay spent 18 months in the mountains of northern Armenia, where he helped build medical clinics and housing. In the 1990s, he worked for four years as a project manager for a nonprofit developer of low-income housing.
In 1999, Holladay accepted a position as associate editor at the Journal of Light Construction, and became editor of Energy Design Update in 2002.
Holladay joined the GreenBuildingAdvisor.com team in November 2008. His Musings of an Energy Nerd blog is among the most popular of GBA blogs.
In most regions of North America, electric-resistance space heating is expensive to operate. Since air-source heat pumps use only 33% to 50% as much electricity as electric-resistance heaters, most homeowners…