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Concentration of CO2 in the Atmosphere

The Ninety Percent Passive House

By George Harvey

Some months ago, architect Robert Scarano of Bright ‘n Green told us something in an interview that really made us sit up and exclaim. “You can get 90% of the way to the passive standard for the same cost as conventional construction,” he said. He then explained, “The extra cost of insulation […]



Burlington: On Wednesday, Feb. 4, Efficiency Vermont will present members of Montpelier Construction with three awards, including “Best of the Best for Innovation in a New Residential Construction” for the Whitchurch Passive House Cottage in Middlesex.

This single-family dwelling, completed in 2014, utilizes […]

NESEA Speakers at BuildingEnergy 15: Ken Levenson

Tiny Bubbles: The Deal With Spray Foam

Thursday, March 5, 2015 – 2:00pm

COO 475 High Performance Building Supply / Passive House Center Member Since: 2011

Ken Levenson is a partner in 475 High Performance Building Supply, a company dedicated to helping transform green building to high-performance building across the US. Ken is […]

Passive House Open House Tour in Central VT!

No registration necessary – just come!

“Heat your home with a hair dryer !!!”


Nov. 7 – 9 are International Passive House Days. To celebrate, Passive House clients are hosting an open house at their brand new passive house cottage.

When? Saturday, November 8, 11 am – 5 pm. Where? 224 Brook Road, […]

Heat your New Home with a Hair Dryer

Did you know that it’s possible to save 90% of typical home energy costs? Passive House, the most stringent energy standard in building construction, enables you to build a cheaper, more comfortable, healthier and safer home that requires only 10% of typical energy use. A PH Building is heated with the heat gains from appliances, […]

Passive House Revolution

Produced by Arthur Morgan Institute for Community Solutions Directed by Faith Morgan

Video Review by George Harvey

“Passive House Revolution” is a short video, about 45 minutes long, explaining what a passive house is and how it is built and functions. This is done by showing passive houses, both under construction and in use, with […]

Moretown’s Second Passive House is Underway

House can be heated with the equivalent of fifteen 100W light bulbs

By Indigo Ruth-Davis

Head north leaving Montpelier, Vermont, hang a right, and before you know it, you’ll be lost on the dirt roads that crisscross the foothills of the Green Mountains. On the side of one of these hills, a crew of workers […]

Interior Window Storms, Panels and Quilts

Window with insert by Window Improvement Masters.

By Bob Walker

You can decrease heat loss through your windows by installing window storms, panels or quilts inside. It is important to make sure all of these fit tightly to the window jambs or trim to prevent warm moist house air from getting behind and […]

Passive House: Capturing Energy and Imagination, Part 2

By Ken Levenson, AIA

Continued from the October issue of Green Energy Times

The Passive House Methodology: Optimize what is already required to be built. In roughly five parts:

Part One: Use the Passive House Planning Package (PHPP)[1] to optimize all efforts. The PHPP energy model has been optimized based on continual research and data […]

Passive House: capturing energy and imagination, Part 1

By Ken Levenson, AIA

Passive House is an international building energy standard, and a methodology to meet that standard – developed by the Passive House Institute (PHI) in Darmstadt, Germany. Passive House turns traditional notions of energy efficiency on their head. Instead of being about compromise and sacrifice for only incremental benefit, Passive House demands […]