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

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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.

Sales, estimation, Load Calc and management tools for the HVAC industry

SAE Technical Papers

Harken is a leading manufacturer of sailboat hardware: ball bearing blocks, winches, travelers, and furling for sailboats; and sailing accessories: shoes, clothing, sunglasses, gloves and luggage.

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

The #1 HVACR Community

wikiHow is a wiki based collaboration to build the world’s largest, highest quality how to manual. Our multilingual how to manual has free step-by-step instructions on how to do all types of things.

At Avenir Software Inc., we focus exclusively on the development of custom software programs for application design and product selection, specializing in easy-to-use tools for technical products that typically require application design and sizing c...

Calculators for Builders Contractors Tradesmen and DIY - Stairs, Roof Framing, Decks, Concrete - Free online