Energy efficiency is handled first with careful detailing of insulation (continuous rigid insulation followed by fiberglass insulation between studs) and air-sealing, which the owner has documented somewhat here. After that, high-efficiency mechanical equipment, Energy Star appliances, and some compact fluorescent light fixtures are used. Fireplaces are direct-vent - visit here for an explanation of why this is more energy-efficient. And although I actually don’t see too many fireplaces in new construction, if you’re interested in one, please don’t try to save yourself a buck with a vent-free fireplace - a brief introduction to the indoor air quality problems these generate is here.

Other project team members include George Sullivan of Eco Smart Buildingn and home energy rater John Porterfield of Informed Energy Decisions.