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EZ-Spec
EZ-Spec Sizing Software for Professionals EZ-SpecTM tankless sizing software takes the guesswork out of choosing the right model, number of units, and accessories needed for a tankless installation. It is simple-to-use and highly accurate. Click the icon below to try it online with nothing to download or install. (requires Internet Explorer 6 or higher). Download it today. Please run the Automatic Update after you install it. EZ-Spec is an advanced tool for sizing many common commercial applicat…
Certispec
The Certispec automated sizing program is the best and quickest way to spec Ruud Commercial Water Heaters. This software is free from Ruud Water Heating. It's the only sizing tool you'll ever need for a tank style water heater. Please read and print this important information before downloading and installing Certispec (1.5 mb file) When you click the Download link below, the program will prompt you to save CertiSpec3Setup.exe to disk. System Requirements: Windows 95/98 or NT 4.X Pentium 90 or h…
You’re Ready with Ruud
2015 DOE REGIONAL EFFICIENCY STANDARDS FOR HEATING & COOLING PRODUCTS additional resource links US DEPARTMENT OF ENERGY Energy.gov DOE: Residential Central Air Conditioners and Heat Pumps Standards New energy conservation standards for residential air conditioners, heat pumps & package models will go into effect on January 1, 2015. For the first time, federal minimum efficiency standards of certain products will vary, and will be based upon the state (region) the product is installed. O…
Glossary of Terms
Glossary of Terms AFUE Annual Fuel Utilization Efficiency. Used to express the efficiency of gas furnaces. The higher the AFUE rating, the more efficient the unit. Federal law has required that all new residential furnaces built after January 1992 operate with an AFUE of 78% or higher. All Ruud® furnaces are manufactured to exceed these requirements with a minimum AFUE of 80%. If your furnace was built before 1992, chances are it is operating with an average efficiency of around 60%. Most of th…
Frequently Asked Questions
Who do I contact for air conditioning products and service? What do rating numbers mean? What is a SEER? What does HSPF stand for? What does AFUE stand for? Should outdoor units be covered in winter? Should a thermostat be set to "auto" or "on"? Can shrubs or flowers be planted around an outdoor unit? If an outdoor unit needs replacing, should the indoor unit be replaced too? How do I know what size unit our house needs? What is the difference between a split system and a package unit? How do I…
