I very impressed with Controlled Air. My House is so cool. Got my AC May 2923. Will give you update Later. Pat read more

Jason is incredible! I was going to have a party and my AC went out. Jason showed up the same day I called because he knew I was in a crunch and needed a quick fix for the party. Since then, Jason has replaced our AC unit and house heater because he is so easy to work with, cost conscious, and is quick to respond. Highly, highly recommend Jason and Controlled Air! read more

We contacted Controlled Air for a 3-way split install. They were very responsive, offered the best quote, and we couldn't be happier with their work and installation. We will definitely choose Controlled Air for any future HVAC needs and recommend them highly to everyone! read more

Jason Umbarger and his company, Controlled Air, were exceptional from start to finish. The pricing was very fair, less than what I think others charge. His crew installed a new AC/Heat system in my house which included zoning using my current ductwork. Jason is a competent professional who is dependable and honest. He cares to do the job right. I highly recommend his company. read more

These guys are amazing!!!! Jason responded immediately to my call, and came to the house and provided an estimate within 24 hours. They were my second estimate & I had it reviewed by a friend who owns a commercial HVAC company. My entire system had to be replaced & I got a very fair price, along with excellent communication, follow through and overall workmanship. Jason and his team really know what they are doing, and did a superior job explaining what was needed and why, and executing the job perfectly. I HIGHLY recommend them for any and all HVAC needs. read more

Jason is responsive, communicative, efficient, honest, and gives good advice. He arrived after a 12+ hour day before sundown to fix our AC because Mom, in her 90s, was suffering from too much heat. He quickly recharged the AC for reasonable cost, with an assessment of the 20yo machine and advice to keep it instead of a $10k++ replacement. It functions well and it's nice and cool inside now. read more

My AC died in the summer and I had multiple companies come over to look at my unit. I was given several quotes and was under the impression that my whole HVAC system needed to be replaced. Controlled Air was the last company that came to give me an estimate and I'm so thankful that I found them. Jason came over and ended up fixing my unit on the spot. Not only did he and save me thousands of dollars but I had cold air right away and didn't have to suffer the heat. It is so hard to find someone knowledgeable and honest when it comes to home repairs and I cannot thank him enough. I highly recommend Controlled Air and will be using them from now on. read more

I've had the pleasure of meeting Jason recently for an estimate to fix and/or replace my current system (hvac - heat pump) in one of my condos and I have to say he's probably one of the most honest and experienced person I've worked with. He was prompt and very knowledgeable with his diagnosis of the issue and fortunately he gave me option to repair and not just replace like the other guys who tried so they can make more money. No one wanted to repair an old (20 yrs+) system but I liked the fact that he gave me that option but also educated me on the pros and cons to doing various options. I don't often give 5 stars and in this case I wish there was like 4.5 just because a 5 really means you're absolutely perfect which is so hard to achieve. Nonetheless, Jason is for sure my go to guy when it comes to HVAC maintenance resource. read more

Simply thr best hvac service. We own 4 homes and they have been to 3 of the four. Pricing was what we expected and the technician was professional and helpful each time. We reccomend them to all of yelp! Outstanding! read more

If you are in need of AC work and want a reputable, courteous and professional contractor, Given Jason at Controlled Air a call. In the middle of a heat wave, our AC went out and I went to Yelp and requested responses from contractors. Jason was the first to respond and had the best availability. He was on time, provided a great customer experience and completed the repair quickly at a very attractive price. I highly recommend him to any of you who would like to develop a relationship with a contractor you can trust. read more

Highly recommended Cintrolled Air! Called early morning for a last minute service Saturday (8/15/20) as we thought something was wrong with our A/C. Jason called back right away. He kept me updated via text on his arrival. Thankfully he was flexible and was able to come later since we were experiencing a blackout during my appointment time. A little history, this is my parent's house, and the unit is super old, I was expecting the worst. However, after Jason tested everything he mentioned, the unit was working fine, and for being 30 years old, it was doing it's best. He didn't try convincing us to replace right away, but gave us some advice on how to help it run better. We will be using him once we are ready for the full replacement. read more

Connected with Jason and was able to come out earlier than expected and within 15 minutes was able to figure out what the issue was. Narrowed the issue to the board not sending power to the induction motor even though the old board was showing a 3 light blinking error code which indicates a pressure switch error. Had a new board within an hour and swapped it out in 5 minutes and the heater fired up with no issues. Spent 3 weeks with the house 50-55 degrees. Took Jason an hour to get the house to 70. Highly highly recommended. Was transparent with what really needed to be fixed and felt like I could actually trust him. Wish I found him sooner, will surely use again for future needs. 5/5 stars experience read more

Jason showed up promptly at 10am today just like he said he would. He was highly knowledgeable when came to diagnoseing and repairing my ac unit. I will be calling Jason in the future for heating and air conditioning needs. read more

Thank you Jason for great service, we are so happy with your work. Now we have good ac and heat work really well and now we safe money on our utility bills every month. We will absolutely recommend you to our friends and family read more

Very impressive service level. Took only 2 hrs. from the time I contacted Jason & getting my A/C problem ( not blowing cold air) fixed. Jason is very knowledgeable, professional & friendly. Best part is he charges reasonable & punctual. Now, I know who to call for my HVAC & A/C problem. Thanks Jason read more

Jason Umbarger rocks! I would use him every time I need work done on my house or any of my clients' homes (I'm a local real estate agent). We had received an inspection done stating my seller would have to pay $8400 for a new AC. Jason came out for a second opinion. All along it was a broken thermostat! Jason did a few minor repairs and her total was only $340! The AC began working like it was brand new. HUGE savings for my seller. Jason is very knowledgeable, reliable, friendly and timely. Thank you so much for your honest work, Jason! I'll be calling you again :) read more

Jason was wonderful from start to finish! He listened to my concerns and made suggestions for the most cost-effective, efficient, and best system for my needs. I was a little concerned in the beginning as he seemed to only have a couple of years experience, but in talking to him found he had over 10 years the HVAC business. He absolutely knows what he is doing. Jason was always there as promised. He was kind and professional throughout the whole process. I would not hesitate to use Jason again and would highly recommend him to anyone needing HVAC Service. read more

Jason/Controlled Air did a fantastic job replacing our furnace and A/C. He worked around our schedule, gave us all of the options but didn't try to sell us on the most expensive options like other companies would, and didn't rush us to make a quick decision like other companies often do. He explained the process and did a thorough job at a very reasonable cost, would happily recommend him! read more

We did our whole house fan installation with Controlled Air during summer of 2019. Long pending review, but hey, better late than never to appreciate good work! Our experience with Jason was fantastic -- from the the initial reasonable estimate, to post installation support, every bit of detail was completed to our satisfaction. Jason walked us through different fan options, set us up with the right sized fan matching square footage and he incorporated our request for fan types that reduced power consumption, etc. I wanted the fan to be connected to my home automation Z-wave gateway and he was patient enough to work with my attempt to convert the fan controls to Z-wave and in the end, it worked perfect and I couldn't be more happier. Also we wanted to pull the permits from the City and Jason completed the same and stood by his work, and set us up with one of his contractor contacts to add additional gable vents to increase attic ventilation. The fan served us well this summer and we are super happy how it all turned out. I would highly recommend Controlled Air and Jason in a blink! read more

My system died during one of the coldest weeks. Two companies were telling me I needed to spend $800 plus on repairs and one company told me I needed an entirely new system. Controlled Air had me up and running with a $429 repair! That's what I call honest. read more

I had an issue with my furnace not turning on (and the house getting really cold). I posted a question on what the problem might be on our local community website and Jason responded and offered to take a look. He came out and isolated the problem and got the issue resolved. He was very thorough with his troubleshooting and made sure the heater started multiple times before he called it "good". Because it was later in the afternoon when I called Jason, most of the places where he can get a replacement part (a logic board) were about to close or have already closed for the day. Jason could have easily just said "I can't get parts right now, so I'll come back tomorrow". Instead, he kept calling his different contacts and when he finally got a hold of a part, he rushed off to get it so he can fix the heater (so we wouldn't have to spend a night in the cold). He was a great guy to work with with reasonable prices. When I'm ready to replace my aging AC/Furnace, he'll be at the top of my list of people to call! Highly recommend it! PS: Don't let the fact that there are only a few Yelp reviews deter you. I was apprehensive myself when he first responded to my post on the neighborhood website. I'm very glad I took a chance and found someone I will continue to use in the future! read more

I highly recommend Controlled Air for any HVAC installation or repair. Jason Umbarger, the owner, was honest, competitively priced, reliable in doing what he said he would do and just an overall great guy. Not to mention, he provided me with solutions I hadn't thought possible. Like relocating my furnace to my attic resulting in much needed hall closet space and just generally thinking outside of the box with some challenging conditions in our house to make it happen for us. I will utilize his company's services in the future and I wouldn't hesitate to give them an A+ rating. read more

Highly recommend Jason @ Controlled Air!! I called him up late yesterday and he was here promptly at 10 am for our appointment. He immediately started diagnosing our Furnace since it wasn't functioning properly last few days. After troubleshooting a few different areas of the furnace and immediately came to a conclusion it was a venting issue triggering the furnace to shut down. The last technician couldn't find a problem and told me it was a gas pressure issue and this happens when all the residents in our complex start there heater!!! I was like what???? Ridiculous!! That's when I called Jason for a second opinion, He is truly an experienced HVAC professional and would recommend him over and over!! Thanks to Controlled Air I now have heat!! and without breaking the bank with his very reasonable rates. read more

Our AC went out on Sunday and Jason showed up today! So 5 star stars with how quickly he could fit us in. Then he came and assessed the issue in 5 mins and was done in 15 mins. He answered all my questions and is just a kind, honest, ethical person! I will refer all my friends to him and it was my neighbor who had highly recommended him to me. So glad we called Controlled Air! read more

Jason replaced the two a/c and heater units in our two story house. He was very professional, clean and explained how everything was going to be handled. He worked around our schedule and made sure everything was working properly before he left. If you're looking for repair or replacement, Controlled Air is the way to go. read more

Jason at controlled air is AMAZING! He was able to come much sooner than expected and quickly figured out the issue with our ac that was not working. He offered and explained all of our options. Throughout the process he showed us what he was doing to make sure we were comfortable with everything. He got our ac working in tip top shape. He was very professional, pleasant, efficient, and honest. I HIGHLY recommend controlled air. We will definitely be calling Jason for any future needs. read more

Jason Umbarger with Controlled Air serviced my husbands business Bay cities warehouse. We where not sure if he would travel to Hayward being a Livermore based business but he responded right away with no hesitation to drive out. I am so happy with his customer service, knowledge on my unit (being over 15 years old) and quickness to diagnose the issue. He set my business up with a quarterly appointment which I think is great. I no longer have to search for a technician that I trust. I would recommend Jason 100%. Bay cities warehouse is a satisfied customer and controlled air we thank you! read more