Northwind was quick to respond and professional when in our home. They are focused on customer satisfaction so they do not try to "upsell" unless they feel it brings value to the customer. I like that they quickly came in, diagnosed the problem immediately, then fixed the issue. I am sure they receive a lot of calls and are busy since it is hot all the time in Houston but I appreciate their quick response and problem solving skills. Highly recommend them for all your AC needs!!! You will not be disappointed.