When compared with a biogas boiler heating system, the hybrid heating system shows its superiority in biogas net production rate. To achieve same heating effects, for D2, 59.66% of the biogas produced should be consumed by a boiler heating system, while only 44.75% has to be combusted in the hybrid system; in D3, 46.07% of the produced biogas should be used in a boiler heating system, and only 34.55% should be used in a hybrid system.