To its already impressive-looking lineup of inverters, AC's Haier added another masterpiece in the shape of the Haier HSU-18HPM Thunder Inverter. This AC has hyper PCB which makes it even more durable. Designed very much keeping our local environment in mind higher inverter is highly energy efficient and with ever increasing electricity cost it is a big factor in choosing the AC for our household. It also has a built-in self-cleaning feature that cleans the AC from time to time protecting it from the harsh environment. The compressor has a 10-year warranty and Haier's after-sales service for ACs might be the best in Pakistan.