With the development of economy and urbanization energy consumption is becoming a very attractive issue in China. Energy consumption in buildings is the one of main sections which dominates the total energy distributions. In this seminar our team will introduce some energy-saving technology for Chinese buildings in hot summer and cold winter regions. We have developed several high efficient cooling and heating supply system and equipment, and proposed energy-efficient hybrid heat pump combined with other heat sources, such as solar energy, geothermal energy, air thermal source. Humidity control is a dominated problem in air conditioning in hot summer regions in China, and also consumed plenty of energy. Many energy-efficient heat and humidity independent control air conditioning systems were investigated and are put forwarding industrialization.