San Antonio HVAC Repair

There was a problem with a relay on the fan that was difficult to diagnose (other repair folks were unable to fix too). They were able to replace the part and even swapped my thermostats for an Ecobee that I purchased. Excellent service and excellent support. I would highly recommend them.

Great service. Aldo was professional and hardworking. He showed me everything he did and was super nice. Great price for the repair work.

Great customer service from start to finish! Quick, efficient and professional. I am thrilled to have Air Systems as my heating/AC installer!

Courteous: Joe called to say he'd be delayed 1/2hr from our appointment. Upon arrival, he immediately tackled the compressor problem. Quickly diagnosed, explained, and repaired the problem. Didn't try to sell me new unnecessary equipment or freon, altho my units are 32 yrs old. Joe is knowledgeable, professional, honest, and efficient. Why use anyone else?

They fit us in last minute & were very professional & courteous. Explained everything they did & recommendations for future.

Woke up this morning and my residential A/C unit was blowing out hot air on a soon to be 100 degree day. Called Airtron at 7AM and was told a technician would call me between 1pm - 10pm. Went to work and at 8AM (1 hour later) got a call from Airtron Tech Billy who told me he was already enroute to my house. Went back to my house and he arrived shortly after. He introduced himself, put his little booties on, and came inside and looked at my unit. He said everything looked good on the inside and asked me to show him the outside unit. I took him to it, he took the panel off and started testing the inside components with a voltage meter. He quickly determined my capacitor was dead. He quoted me different prices depending upon how long a warranty I wanted (1 year vs lifetime). I selected the one with the lifetime warranty and he went to his truck and came back and replaced it. After that he borrowed my hose to get my fan working again and in no time my a/c unit came back to life. Overall I was very happy he came as quickly as he did, quickly determined the problem and fixed it for a fair price. Billy from Canyon Lake was great.

Noticed (83 Degrees and rising inside) A/C (outside unit) wasn't working. Called at 2:00pm (Labor Day). Albert, who was on call, arrived at 3:00pm. Replaced capacitor, checked out rest of the system and was complete by 3:30pm. Quick and responsive service. Just charged for service call as the rest was under warranty. Have used Zimmermann Services for going on 20 years now.

it went well. They were thorough and fixed the problem & checked to make sure nothing else was wrong.

Were able to stop by within hours of the call. Fixed the heating system by replacing faulty wiring. Professional & fast. Thanks.

The technician quoted ten or twelve thousand dollars in his recommendation to replace my entire heater/blower unit, and offered the second option to replace the heating elements for $1,600. The part actually only cost $200 retail (from Sears). When I couldn't afford that, I went without a heater for a month until a friend offered to help me. As it turned out, the problem ended up being a $25 switch, and not the heating coils at all. Moral of the story: Champion AC will sell you ten times what you need to fix your problem, for 20 times the price you should have to pay. Also, there is no replacement for having friends with experience in either home or auto repair!

Great service. Lance the primary technician was great and did what he said he was going to do. Very helpful.

Service tech arrived fairly prompt, spent time diagnosing and fixed the problem. then installed thermostat and verified correct function with manufacturing rep on phone.

John arrived on time, diagnosed and fixed the problem quickly. It ended up being a simple fix (I had assumed it would have been a much larger issue). The point is - you can trust Zimmermann employees. They will always give you an honest answer, and they always do an awesome job with the fix. I've been using Zimmermann for my AC needs since we moved to San Antonio many years ago and I have never been disappointed! It's just nice to know there are still contractors out there that you can completely trust.

Provider arrived on time and asked if I would like to watch. This surprised me, but was it very helpful and knowledgeable. He asked a few questions and theorized what might be the problem. Walked me through the process, plus advised us for future problems and how to avoid or prepare for them.

We recently purchased the house so we have a home warranty and this is the company they sent to fix our ac. They scheduled the service call for 2-7pm on Friday. At 1:40 the tech called to say he was on the way. I told him I would be there by 2pm. He called about 2:20pm to clarify where I lived. He told me where he was which is 10-15 minutes away. At 3:20 I called to find out where he was. He said he had stopped to get a part for a job the next day and would be there in a few minutes. He did not show until after 4pm. Checked the freon level and said it was low but that it would not let him add any so he had to come back Monday between 1-5pm. I'm not sure why he could not do more with it then. Seems like he should have had the equipment on the truck to diagnose it. Since the service window they gave me was for 2-7pm and it was only 4:30pm then he should have had the time. I think it was because it started raining. which of course stopped about 15 minutes after he left. So I take off work a second day after waiting all weekend to get it fixed. At 4pm I start getting worried and call to see when they are coming. The owner said they did not have me on the schedule and they would have to set up a third time that I would have to be off work for them to come. He said I should have talked to him and not his employee about scheduling the return call. When I told him he was responsible for his employees not me he got belligerent and said I should call someone else. So I called the home warranty company and have another company coming to do the repair. I have lost out on two days a work and another 5 days of running the ac 24/7 to keep the house comfortable.