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Fabulous service! My furnace began blowing cold air over the weekend. I tried he basic steps to fix it myself on Sunday night, but no luck. I contacted Controlling Systems in the morning, based on Yelp rankings and reviews, and they were able to schedule an afternoon apt for me. They provided a 2hr service window where the tech would be available, and Gus showed up and diagnosed the problem as a bad pressure switch after 20 minutes. Although he didn't have the part on hand, he was able to quote me the cost for the part and service. He returned with the pressure switch, installed it and gave me a review of the overall condition of my furnace all with an hour. I will definitely contact this company again for future services and recommend them!

Very positive experience. Professional staff. Prompt and accommodating. Would definitely recommend them to friends and family. Great work.