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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. Do I need to worry about space heaters? Here’s what experts ...

    www.aol.com/lifestyle/worry-space-heaters...

    Space heaters can and do cause fires, making it important to be mindful about how you use them. However, experts say it's possible to use electric space heaters safely.

  4. Catalytic heater - Wikipedia

    en.wikipedia.org/wiki/Catalytic_heater

    A catalytic heater is a flameless heater which relies on catalyzed chemical reactions to break down molecules and produce calefaction (heat). [1] When the catalyst, fuel (e.g., natural gas), and oxygen combine together, they react at a low enough temperature that a flame is not produced.

  5. ASHRAE 55 - Wikipedia

    en.wikipedia.org/wiki/ASHRAE_55

    ANSI/ASHRAE Standard 55: Thermal Environmental Conditions for Human Occupancy is an American National Standard published by ASHRAE that establishes the ranges of indoor environmental conditions to achieve acceptable thermal comfort for occupants of buildings. It was first published in 1966, and since 2004 has been updated every three to six years.

  6. Patio heater - Wikipedia

    en.wikipedia.org/wiki/Patio_heater

    Propane patio heaters are the most popular type, as they are portable and easy to find refill locations such as gas stations or convenience stores. The downside to propane is that you need to purchase a separate tank for each heater you own and can be more costly to operate than electric or natural gas.

  7. California's long-awaited indoor heat standard has gone into ...

    www.aol.com/news/californias-long-awaited-indoor...

    The indoor heat illness prevention rule regulates indoor workplaces in California that reach or surpass 82 degrees, such as kitchens and warehouses. California's long-awaited indoor heat standard ...

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