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2. Vaillant Group - Wikipedia

   en.wikipedia.org/wiki/Vaillant_Group

   The history of the Vaillant Group dates back to 1874, when Johann Vaillant set up a master fitter's business. In 1894 Johann Vaillant patented a new "closed-system" gas-fired bathroom boiler. [3] This was the first device that made it possible to heat water hygienically, without contaminating it with combustion gases.

3. National Board of Boiler and Pressure Vessel Inspectors

   en.wikipedia.org/wiki/National_Board_of_Boiler...

   The National Board trains hundreds of boiler and pressure equipment professionals from around the world every year. National Board training facilities are located on a 16-acre (65,000 m 2) wooded campus in Columbus, Ohio.

4. Central heating - Wikipedia

   en.wikipedia.org/wiki/Central_heating

   A condensing boiler Hot water central heating unit, using wood as fuel. A central heating system provides warmth to a number of spaces within a building from one main source of heat. A central heating system has a furnace that converts fuel or electricity to heat.

5. News, Politics, Sports, Mail & Latest Headlines - AOL.com

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   Get the latest news, politics, sports, and weather updates on AOL.com.

6. AOL Mail

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   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

7. Mechanical, electrical, and plumbing - Wikipedia

   en.wikipedia.org/wiki/Mechanical,_electrical...

   Pipes and cables in the Large Hadron Collider, an example of the unity between mechanical, electrical and plumbing. Mechanical, Electrical, and Plumbing (MEP) refers to the installation of services which provide a functional and comfortable space for the building occupants.