HVAC Systems

A first-time home designer nails it with an updated farmhouse that includes double-duty spaces, a serious mudroom, and a five-star energy rating by Diane Kolak

Here’s how to spot the signs and boost the efficiency of your furnace, boiler, or heat pump by Dave Yates

Look over the shoulder of an expert installer as he fastens panels to the roof and explains how the system works by Scott Andrews

This home uses five systems to reduce its environmental impact, lower its operating cost, and improve its connection to the land by James Tuer

A forward-thinking homeowner invests in a highly efficient HVAC system that includes photovoltaics and a noncombustion furnace

Requirements: 1 metal roof, 2500 gallons of rain, and the desire to save the planet

Get an in-depth look at a near-zero energy house featuring recycled materials and solar-heating and rainwater-harvesting systems

Video tours and takeaways from Portland's Build It Green! 2008 event

Solar panels aside, you can’t see the upgrades that make this downtown remodel so energy efficient by Richard Renner

HERS Index allows more latitude for recognizing reductions in energy consumption by Tristan Korthals Altes

An innovative solar-heating system is the foundation of an artist’s small country house, where an equally smart plan accommodates both life and work by Charles Miller

Common-sense solutions for creating homes that are self-reliant, resilient, and versatile by David Johnston, Scott Gibson

College students design and build nearly net-zero energy homes by Charles Bickford

Compact and beautiful, mkLotus is a zero-energy house with major appeal  by Tim Schmidt