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The U.S. DOE Energy Efficiency and Renewable Energy Web site provides information on energy efficiency and renewable energy technologies.

Reviews and free software downloads for Windows, Mac, Palm, Pocket PC, and Mobile Phones. The best programs and games. Buy software directly online.

Elite Software - 30 hvac software programs for all aspects of hvac, plumbing and electrical System Design

Find the value of your home or building at Building-cost.net

Receive multiple FREE Quotes for steel buildings & metal buildings from leading manufacturers & suppliers by completing one form - choose from steel horse barns, riding arenas, warehouse buildings and more.

Taco is a manufacturer of hydronic systems and equipment for residential, light commercial, industrial and OEM markets. Site includes information for HVAC designers, engineers, plumbing contractors and consumers.

Wrightsoft HVAC software is the complete solution for HVAC load calculations, system design and sales requirements.

HVAC Software, Flat Rate Pricing for HVACR, Plumbing, Appliance, and Electrical Industry. Management Books & Publications. HVAC Plumbing Business Consulting Seminars and Workshops.

Green Building Advisor is the one-stop source for builders, remodelers, architects & homeowners looking for expert advice on green products, strategies & proven construction details.

DOE2.com Home Page