HVAC Systems

Before you assume that basement monster must go, watch this cost-benefit analysis from a professional home-energy auditorby John Jennings

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

by Dud Carlson

By installing a modern wood-heat appliance, you can save money this winter and reduce your environmental impactby Matthew Teague

Solar water-heating systemby Scott Gibson

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

Micro-cogenerators, or combined heat and power (CHP) systems, are both environmentally friendly and a money saverby Lynn Underwood

Reiker ceiling fan/heater is a ductless room conditionerby Maureen Friedman

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

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

by Rachel Wagner

by Daniel S. Morrison

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

The key is in understanding how your building's systems work togetherby Jamie Lyons

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

This add-on to your water heater uses hot air to heat the water in your tankby Chris Ermides

A solar water heater and radiant-floor heat maximize efficiencyby Michael Chandler

Testing an attainable approach to green practices, an architect designs his own home for a friendly fit in a historic districtby Michael McDonough

Some are illegal, some are dangerous, and some are both—but all are simple to avoidby Joseph Fratello