The design should be standardized and scientific, the heat loss calculation should be correct, and the power should not be reducedin order to meet the user's low-cost expectations or the power should be increased in order to make the heating effect obvious.Design power standard requirements: (area: 30cm-50cm thick wall + thermal insulation, 3 meters high, residential buildings forheating purposes) per square meter (heating area) selection design power intensive mean: about 150W/m. Bathroom 180W/m. Thedifference rate between the north and south directions, the adjustment ratio after the comparison of heat transfer betweenhouseholds, and the adjustment of the use of other functional areas are about 5% each.