In 2001, the group put into production a series of solar energy products, and in 2006, it won the bid for a number of solar water heating system projects such as the Qingdao Olympic Sailing Base, the Beijing Tennis Center, and the Olympic Village Restaurant. In 2010, Haier Solar Jingyi series won the German IF Industrial Design Award. Since 2012, flat panel solar water heaters have maintained the first sales volume in the country.
 
In terms of flat-panel solar water heaters, Haier has the unique advantages of its big brands, and with its technical capabilities and financial support, Haier has launched a number of excellent flat-panel products. For example, the space energy flat panel water heater that combines solar energy and air energy can save energy while providing sufficient hot water in rainy weather. Compared with the strong flat panel solar products, the glass vacuum tube products are really Haier's weakness. Haier uses purple gold tubes, copper as the infrared reflective layer, aluminum oxide, aluminum nitride, and stainless steel as the absorbing layers.
 
Xinjiayue I3 series products are the representative of Haier's low-end glass vacuum tube products, 155L The price of this series of products is 4300 yuan. This series of products are made of "Baosteel" patented 445J1M food-grade stainless steel, which has better chloride corrosion resistance than SUS304 stainless steel commonly used by other brands. However, the inner liner adopts the lock-type occlusion process processed by rolling pressure, which is less difficult to make, reduces costs, and the effect is not as good as the stainless steel liner integrated processing of other brands.
 
Later, the Jiachang series improved this process, using a fully enclosed micro-pressure water tank, which can keep the water quality in the tank clean and free of debris. A series of configurations such as over-temperature pressure relief protection valve, water inlet pressure reducing valve, vacuum pressure relief check valve, etc., make the pressure of the inner tank up to 0.035Mpa, which is equivalent to adding an extra layer of height difference on the basis of the original installation drop, so that the water outlet pressure is guaranteed. In addition, the incubator adopts patented concentrating ring technology, fetal film positioning insulation technology, and horizontal foaming insulation technology, which makes the insulation effect significantly improved compared with ordinary products. The series is priced at 5000-6000 yuan.
 
At present, most solar water heaters are equipped with electric auxiliary heating function to make up for the lack of hot water available on rainy days. However, the electric auxiliary heating wire needs to be exposed to the outdoors together with the water heater, and the life of sun and rain is often short, and accidents are prone to occur. At present, the state has not issued strict regulations related to electric auxiliary heating, and it is not recommended to buy products from small manufacturers for personal safety. In this regard, Haier's solar products are grafted with its excellent anti-electric wall technology in the field of electric water heaters, which greatly enhances product safety.
 
Haier's flat-panel solar water heater has a tendency to be seen at a glance, and the technology is more leading. The IF Award-winning Jingyi series is equipped with a safety and anti-dry burning function, which immediately stops heating once the water tank stops to avoid potential safety hazards. The over-temperature warning protection can automatically alarm when the water temperature is higher than 85°C. However, in the hot summer, solar heating efficiency is quite high, and the water temperature is extremely high, and the phenomenon of warning during the day is constant. It is recommended to cover a part of the collector to protect the tank and extend the life of the product. Products that do not have a water temperature reminder are also recommended to apply similar protection in the summer. However, the Jingyi series is similar to other flat panel solar energy, with a smaller capacity, only two options, 80L and 100L, and the prices are 5600 yuan and 6000 yuan respectively, which is only suitable for small families.
 
Space energy series is the flagship product of Haier's flat plate type, space energy = solar energy and air energy, supplemented by electric auxiliary heating function, which can provide hot water normally in all kinds of weather. The air energy water heater is a new type of power-saving technology that transports ambient heat to cold water through a heat pump, saving more than half of the electricity compared to direct heating of an electric water heater. The combination of the two energy-saving technologies has created Haier's unique space energy series products. The flat plate collector plate of this series uses R134a refrigerant different from Jingyi, and the phase change heat collection is more efficient. This refrigerant is a commonly used refrigerant for high-end air conditioners, which is environmentally friendly and pollution-free. This series of products has three large capacity options of 150L, 200L and 265L, compared with the capacity of about 100L of other flat products, this series can meet the water supply needs of many large families. The price of the product is not high, the price is 7000-8000 yuan.
 
In addition to the space energy series, Haier's other solar products are not sold online, but there are many offline outlets, and it is relatively convenient to buy. Haier flat-panel solar water heater provides 8-year free repair, glass tube solar 6-year free repair, and the after-sales policy is significantly better than other brands.