The Haier Thermocool Supercool Premium Split Air Conditioner is everything one could want in an AC. It cools down rooms quickly and in a wide range of voltage conditions. Importantly, you can be guaranteed that it will last thanks to its sturdy copper frame! This AC is made of 100% Copper. What this means is that if you own one of these, you're owning an easily maintained AC built to last with reliable strength and good heat transfer.