Climate Works installed central air conditioning in our home on the hottest day of the year, and did so quickly and efficiently. When they discovered that our electrical panel wasn't able to accommodate the addition of central air, they immediately provided us with a range of options.
My only complaint: the air conditioning unit froze by the next day because of an issue with the coolant and the distance to the outside unit. However, I called Climate Works about the problem, and a technician was at my house within the hour -- on a Saturday -- to fix it, free of charge. It's now been a month, and we haven't had any problems since then. We would definitely use them again.