An employee of Daikin Industries Ltd works the production line of outdoor air conditioning units at the company's Kusatsu factory in Shiga prefecture, western Japan March 20, 2015. As Japan heads into the season of peak demand for room air-conditioners, Daikin managers have been tasked with figuring out how to boost output by some 20 percent at the 45-year-old Kusatsu plant that six years ago the company had almost given up on as unprofitable. (Photo by Yuya Shino/Reuters)

An employee of Daikin Industries Ltd inspects indoor air conditioning units at the production line at the company's Kusatsu factory in Shiga prefecture, western Japan March 20, 2015. (Photo by Yuya Shino/Reuters)

A man transports Daikin Industries Ltd's air conditioners on a truck at the company's Kusatsu factory in Shiga prefecture, western Japan March 20, 2015. (Photo by Yuya Shino/Reuters)

A Daikin Industries Ltd employee carries a tank filled with a refrigerant, low in global warming coefficiency, at the production line of outdoor air conditioning units at the company's Kusatsu factory in Shiga prefecture, western Japan March 20, 2015. (Photo by Yuya Shino/Reuters)

A Daikin Industries Ltd employee inspects indoor air conditioning units at the production line at the company's Kusatsu factory in Shiga prefecture, western Japan March 20, 2015. (Photo by Yuya Shino/Reuters)

A mirror reflection shows employees of Daikin Industries Ltd working the production line of outdoor air conditioning units at the company's Kusatsu factory in Shiga prefecture, western Japan March 20, 2015. (Photo by Yuya Shino/Reuters)

Daikin Industries Ltd employees work the production line of outdoor air conditioning units at the company's Kusatsu factory in Shiga prefecture, western Japan March 20, 2015. (Photo by Yuya Shino/Reuters)

A Daikin Industries Ltd employee works the production line of outdoor air conditioning units at the company's Kusatsu factory in Shiga prefecture, western Japan March 20, 2015. (Photo by Yuya Shino/Reuters)

Daikin Industries Ltd employees work the production line of outdoor air conditioning units at the company's Kusatsu factory in Shiga prefecture, western Japan March 20, 2015. (Photo by Yuya Shino/Reuters)

Copper tubes, which exchange heat in outdoor air conditioning units of Daikin Industries Ltd, are stacked at the production line of the company's Kusatsu factory in Shiga prefecture, western Japan March 20, 2015. (Photo by Yuya Shino/Reuters)