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2. Gas heater - Wikipedia

   en.wikipedia.org/wiki/Gas_heater

   A gas heater is a space heater used to heat a room or outdoor area by burning natural gas, liquefied petroleum gas, propane, or butane. Indoor household gas heaters can be broadly categorized in one of two ways: flued or non-flued, or vented and unvented .

3. Williams Companies - Wikipedia

   en.wikipedia.org/wiki/Williams_Companies

   The Williams Companies, Inc., is an American energy company based in Tulsa, Oklahoma. Its core business is natural gas processing and transportation, with additional petroleum and electricity generation assets. A Fortune 500 company, [1] its common stock is a component of the S&P 500.

4. Furnace (central heating) - Wikipedia

   en.wikipedia.org/wiki/Furnace_(central_heating)

   The fourth category of furnace is the high-efficiency condensing gas furnace. High efficiency condensing gas furnaces typically achieve between 90% and 98% AFUE. [3] A condensing gas furnace includes a sealed combustion area, combustion draft inducer and a secondary heat exchanger. The primary gain in efficiency for a condensing gas furnace, as ...

5. The Best Garage Heaters for Warming Up Chilly Workshops ... - AOL

   www.aol.com/lifestyle/garage-heaters-keep-space...

   Portable Electric Garage Heater. For a powerful 5,600-watt portable garage heater, we recommend this model from NewAir. It’s designed to warm spaces up to 600 square feet, plus it has a 6-foot ...

6. Williams Olefins Plant explosion - Wikipedia

   en.wikipedia.org/wiki/Williams_Olefins_Plant...

   On December 18, 2012 workers discovered "a visible leak" of propylene gas. According to a report submitted by Williams Olefins to the Louisiana Department of Environmental Quality (DEQ), 514 pounds (233 kg) of propylene gas escaped. Williams Olefins said, "Piping corrosion under insulation is believed to be a significant factor in this incident ...

7. Heating system - Wikipedia

   en.wikipedia.org/wiki/Heating_system

   A heating system is a mechanism for maintaining temperatures at an acceptable level; by using thermal energy within a home, office, or other dwelling. Typically, these systems are a crucial part of an HVAC (Heating, Ventilation, and Air Conditioning) system.