I bought this on line - I wanted to buy an extended warrany - but did not know how.
I called LG customer service - and was directed to the correct person to sign up
for the warranty program I was looking for. I was very pleased with the cost for the added
protection. The installation was simple and easy to do. THIS MODEL WORKS REALLY WELL - I have only been in a few days of hot weather - so far - and this is great. And I was really surprised at how quiet it is. The main thing I want to say is this is a quality product and the customer service I received really let me know that I made the correct purchase.