HVAC Systems

Cross-linked polyethylene tubing is cheaper to buy, is faster to install, and won't corrode or explode by Andy Engel

Healthful, light-filled, and energy-efficient, this home reaches back to its California past and toward a sustainable future by David Arkin

Winner of a national green-building award, this low-maintenance house should produce as much energy as it uses by Nathan Good

by William Aitken

by Mark Eatherton

by Mark Eatherton

A little easy-to-assemble trim dresses up these homely metal heaters by Rex Alexander

The kind of ducts you use and the number and types of turns they make dramatically affect HVAC-system performance by John O'Connell, Bruce Harley

Concrete slabs, thin slabs and metal plates offer different ways of routing radiant heat underneath every floor in the home by John Siegenthaler

by Jonathan R. Smith

by Peter Sheridan