Fujitsu a/c systems are produced both home and industrial use. https://my.sterling.edu/ICS/Academics/LL/LL379__UG12/FA_2012_UNDG-LL379__UG12_-A/Collaboration.jnz?portlet=Forums&screen=PostView&screenType=change&id=88ebc1b5-33a6-4412-ab55-1e6d7dfcb4ac