Outdoor Unit Indoor Unit   BTU Option 
   CU-3XS27RKZ       CS-XS9RKZW       9K BTU
   CU-3XS27RKZ   CS-XS12RKZW      12K BTU
   CU-3XS27RKZ   CS-XS18RKZW     18K BTU


Please note that warranty coverage is only limited to the following combination:      






























            
Panasonic System 1   Panasonic System2
(4 Ticks) 		 Panasonic System 4
(2 Ticks)  

Panasonic System 2
(2 Ticks)  		  Panasonic System 3
(2 Ticks)