The warranty period and service quality are crucial for any pricey device, including Air conditioners. Most Air conditioners come with a 1-year brand warranty and longer warranty period for the compressor. Since the compressor is the most important part of any Air conditioner, its repair cost is higher, too. So, you must notice the warranty period that a brand is offering on the Air conditioner’s compressor. Some brands offer as low as a three-year compressor warranty, while premium brands offer as high as a ten-year compressor warranty. The longer the warranty period, the better.