From the initial estimate to installation, we were very pleased. Mike explained the process thoroughly and James and Chris did a fantastic job on the install. Every day before leaving they left our house neat and clean and told us what the schedule was for the next day. Most importantly, they liked our dogs !! As for the windows, we noticed a difference immediately, no more drafts! Our furnace doesn't run as long or come on as often. We highly recommend Comfort Windows to anyone considering window replacement.