The indoor unit get improved with better motor, optimized fan and air duct. It enables the air conditioner to blows air as long as 15m. Special design and better conformal coating protect its components against various elements that reduce its lifespan and keeps you cool even at 54°C high temperature. With the Press of the Turbo Button on the Remote you shall feel the difference in room temperature in a minute. Haier AC Comes with 100% Grooved Copper Increasing the Heat Exchange Efficiency by 30-50%. Normally cooling only model condenser use Plate aluminum and hot & cool model use blue fin, but all of the Haier AC use blue fin to improve anti-corrosion.at the same time all the outdoor with plastic grill for anti-corrosion.