Plants provide net benefits.

Plants together in the workplace to new research findings indicating that the proper installation of indoor plants can provide net benefits and is an excellent return on investment. The results show that indoor plants could save in a modern, sealed office structure U.S. companies 129 billion U.S. dollars by improving the indoor air as much as 58 billion U.S. dollars annually by preventing sick building disease. Plants can also result in an additional $ 200 billion U.S. dollars in improvements in work performance through the creation of better indoor air quality, because research has shown that indoor mold in a suspended desktop environment reduce by up to 50 percent sealed. In addition, plants can significantly lower workplace stress, fatigue and reduce the productivity increases by nearly 12 percent. The proper selection and placement of plants can also reduce the costs of heating and cooling by up to 20 percent. According to the International Society of Arboriculture, the net cooling effect of a young healthy tree of 10 air conditioners operating 20 hours per day height. The number of plants depends on many factors, but no matter how many plants as possible in accordance with the design data can reach the optimal improvement of indoor environment. Research has shown that sufficient 15-20 plants to clean the air in an area of 1,500 square meters.