An electrical floor heating system was designed by using carbon fiber tapes (CFT). The heating performance and economic applicability of the heating system were also analyzed. The heating system was constructed in a bedroom with good heat insulation, and the temperature sensors were arranged at the layers of the floor and near the floor for 24 h duration tests. Temperatures at specified locations were monitored and analyzed to study the performance and the energy consumption of the heating system. The results showed that the CFT electrical heating system could keep the indoor temperature constant within the preset range; the temperature gradient in lateral direction was within 3 °C when the carbon fiber tapes were reasonably arranged in the floor. Meanwhile, compared with that of the traditional heating methods, the economic applicability of the proposed heating system was also studied. The results show this CFT electrical heating system has the advantages of less construction cost, medium operation cost and less overall cost.