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2. Gas heater - Wikipedia

   en.wikipedia.org/wiki/Gas_heater

   Upright non-flued liquefied petroleum gas heater, 1970s A wall mounted gas heater that runs on either propane or natural gas. 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 ...

3. Patio heater - Wikipedia

   en.wikipedia.org/wiki/Patio_heater

   Distance from heater Propane and natural gas heaters Electric heaters 4 sq ft 1 foot 10,000 BTUs 1,000 Watts 16 sq ft 2 feet 36 sq ft 3 feet 64 sq ft 4 feet 100 sq ft 5 feet 46,000 BTUs 144 sq ft 6 feet 1,500 Watts 196 sq ft 7 feet 256 sq ft 8 feet 324 sq ft 9 feet Requires additional heater 400 sq ft 10 feet Requires additional heater

4. LO-NOx burner - Wikipedia

   en.wikipedia.org/wiki/LO-NOx_burner

   The Australian Gas Association in turn reduced the indoor emission rate of NO 2 for unflued gas heaters from 15 to 5 ng/J and this remains the current limit. [4] The New South Wales government, through the Public Works Department, also re-evaluated alternative methods of heating classrooms, to ensure a safe and healthy environment for students.

5. CAPScall of the Week: QR Energy - AOL

   www.aol.com/.../02/19/capscall-of-the-week-qr-energy

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6. 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.

7. It's Showtime for QR Energy - AOL

   www.aol.com/2013/05/06/its-showtime-for-qr-energy

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