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How to Choose the Best Gas Patio Heater As opposed to electric patio heaters which require electricity and can be expensive to run gas models make use of propane. On hot days, they may also burn or sputter through the tank quickly. Find heaters with pyramidal designs that connect to standard propane tanks, and that can produce an impressive 40,000 Btu. These heaters tend to be more efficient in heating larger areas and in colder climates. 1. Infrared Infrared heating technology is an e