| 摘要 |
A heating apparatus can be a dual heating power source or a hybrid heater. For example, the heating apparatus can include a fuel delivery system for combusting a gas fuel and a separate electronic heater. Other types of heating sources or methods can also be used to provide the heating apparatus with more than one heating source and/or heating method. The heating apparatus can also include one or more air flow channel to facilitate efficient heating of air flow through the heating apparatus.
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