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Natural Gas Patio Heaters Natural gas patio heaters utilize the same infrared heating element that is used in propane patio heaters, which heats the air around them. There are a few key differences between these models. Heat output is listed in British thermal units (BTUs). The higher the BTU rating is the greater the size of the area that a heater will comfortably heat. Cost-Effectiveness In contrast to propane and electric patio heaters natural gas models offer the most cost-effective solution for homeow
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