I don't have it cleaned as well. Check your manual, walang nakalagay sa maintenance schedule about a/c disassembly for cleaning. At most, change lang ng pollen filter

Yung pang-linis ipunin mo na lang for any eventual repair. Cleaning or no cleaning, masisira at masisira din ang a/c mo at one point or another. To give you an idea, a/c cleaning for Pajeros costs Php 1,200.00 at Mario's (mas mahal pa sa iba), replacing the compressor costs Php 4,900.00 while replacing the evaporator costs around Php 4,000.00. Even if I have it cleaned annually, the a/c system will develop problems in 5-7 years so ipon na lang and antay masira. Tapos sinasabay ko na lang ang cleaning (if applicable).

In my experience, a/c systems will rarely breakdown within 5 years even with ZERO maintenance as long as you use it properly.