Zimmermann Air Conditioning & Heating 7790 Mainland Drive, San Antonio, TX 78250

"The technician told me the transformer was out. He replaced it and unit still didn’t work. Then he told me my board was out. I asked him to call someone and it turns out neither the transformer or the board were the cause of the problem. But he demanded I pay for replacement of transformer. Great salesman but very poor technician."

"Zimmermann just installed a new American Standard system for me. It went perfectly. Owners, techs, and office staff are top-level professionals and enjoyable to do business with. Over the past 30+ years, they are the best I have found."

"I cannot say enough positive things about Zimmerman! They are highly responsive, and our technician was highly professional, knowledgeable, and efficient. I trust that Zimmerman has its customers’ interest at heart and am glad I found them."

"My unit stopped heating in the middle of the night, and we were freezing. I called Zimmerman midmorning they came the same day, on time, diagnosed and fixed my A/C Heating problem right away, and charged me fairly for their expert and professional service. I was so impressed that I signed up for their regular maintenance service, and even saved some money in the process. I'll recommend them to everyone from now on."

"A/C stopped turning on and was not sure of the issue. Had water in the drain pan under the coils so knew i needed to contact a hvac company. I took photos of everything and submitted them to Zimmermann ac and explained the situation. I contacted them at 6 pm on a Tuesday night. Terry from Zimmermann immediately responded back to me and asked for my address and if he could stop by later that night to see what was going on. Terry showed up at 7pm that Tuesday night, showed me what the issue was and explained the repairs needed to be done and why the system was malfunctioning. He got the system to run temporarily to get us through the night. Now we are in the middle of getting everything fixed and Terry has given me multiple quotes so I can lay out all the options and cost differences. Will continue review after install this week."