You must pass two qualifying exams in orthodontic assisting and infection control to become a Certified Orthodontic Assistant. As of April 2011, DANB certification for OAs was recognized in 38 states and required in four - Massachusetts, Maryland, New Jersey and Oregon.
American Standard Companies, Inc. was a global manufacturer of plumbing, heating, ventilating and air conditioning (HVAC) systems and services, bath and kitchen products and vehicle control systems.he company was formed in 1929 through the merger of the American Radiator Company and Standard Sanitary Manufacturing Company forming the American Radiator and Standard Sanitary Corporation. The group was renamed to the American Standard Corporation in 1967.
Ultra Efficiency: Trane XL20i. This is the Trane top of the line central air conditioner, the Trane XL20i. This Energy Star product is characterized by outstanding efficiency of up to 20 SEER which may reduce air conditioning costs by 50% or more when it replaces models 10+ years old. Here are other top features that affect the cost: