Our A/C unit died, on a Sunday, in the middle of Summer. We put a post on Facebook that said essentially«who do you trust?». Our friends were quick to respond and Koesterer Heating and Cooling was highly recommended. We contacted them, left a message and Mr Koesterer called back within 10min. Shortly after, the technician, Don, was at our front door. He was very friendly, and found the problem quickly. 15 minutes later cool air was flowing from our vents. The prices were very reasonable and we will not hesitate to recommend and use them again.