Heating & Air Conditioning / HVAC near Discovery Bay

“Randy and his team completed our system in a day. They did a fantastic job removed old system and placed new AC and heating. Randy was helpful in giving us suggestions on the best system to go with for our house. They showed up on time very polite and let us know what they were doing as it was being installed. They removed all old system and debris. They offered a great warranty package as well. I recommend Homefront heating and air to do your system. The cost was lower than any other quotes we received for everything they did even putting in dual zone and checking ducts for correct placement & re routed where needed. I wish I could give them 6 or more stars they are a great company.“

“Alex was a great!! Was very knowledgeable and he understood what needed to be done. He was able to work around my schedule while still communicating what needed to be done. I appreciate his professionalism during the entire contact.“

“HomePro Solution is the only way to go solar.

I just had a solar energy system installed, and the entire process has been truly outstanding!
A huge shoutout to Tim and his team, who were incredibly knowledgeable and professional throughout the whole process. His expertise made the entire process seamless, ensuring I got the best system for my needs.
The installation was smooth, and the system is performing beyond expectations. If you're considering going solar, I highly recommend it—especially with guidance from professionals like Tim!“

“Regular maintenance appointment: arrived and received a text 15 min before arriving. Professional and polite“

“Potential Customers;After more than thirty years the developer installed HVAC system in my home died. Friends and neighbors had told horror stories of purchasing new HVAC systems however the thought of going through winter with out heat gave me chills. I started asking around town and looking for recommendinations, well I heard more, "Don't use _X_" than I heard I positive recommendations. Interesting one positive name I heard several time was Sexton Heating and Air. I gave them a call, Patrick (owner) answered the call and said he would come by and see what I needed. He came by, very professional, asked my experiences with my current systen , how I used it and what I was looking for. Then we walked the house and he looked at the system, he quickly agreeded it needed to be replaced. He then explained to me new HVAC systems worked and current building code requirements and how they would appily to my situation. He also brought up several options that were available if I was interested. I tend to be more "old school" so we stayed with the basics. Patrick sent me a detailed written estimate several days later, during which time I contacted other HVAC installers. The bids came in. Patricks bid was on the low end, it was detailed, complete, and a contrac I felt very confident signing. Also it was several thousand dolllars less than I was expecting.I believe the istallers were here withing a week at 8 a.m. ready to go to work. The two employees were not just workmen but but nice people, people that you would be happy to have in your home as friend. They showed they had great respect for my home and took care in all locations where work was performed, I was impressed. The install required some modifications to the install area but actually looked more efficent and professional than the original system. With cold weather in town and the new system in operation I can confirm the very definite improvements.Inspite of the low bid all equipment installed was top quality new Trane equipment properly matched to thre size and layout of my home and ready to perform as needed not only during normal operating conditions but during weather extreems.A new HVAC system for you home is a sizeable investment and it will be with the home for a long time the best decision you can make it to invest in the quality equipment and with an installer that has a top notch reputation. I am glad I went with Sexton Heating and Air.Sincerely, David Dennick“

“Barney, helped me again June 24Barney, helped me again June 24 2025. My AC was only blowing out hot air, and the freon line kept freezing up. Barney found one of my freon valves blew out. He replaced it pretty fast and got my AC up and running again. What I really like about Barney is that he tries to figure out the problem and tries to repair it. Instead of like some companies telling you right away that you have to replace your equipment. He is very friendly and professional, and he is very knowledgeable. I also like that is is very reasonable with his prices. I highly recommend Sanford and Sons for your AC repairs. Give him the evening or the next day to get back to you, after you leave a voice message. He always has lots of business, he is that good! Thanks again Barney for getting us back up and running! Much appreciated!“

“Arturo was very quick, responsive and friendly. He came right away, on a holiday weekend and was able to get our AC back on before the hottest part of the heatwave started! Appreciate the work and reasonable pricing.“

“Ryan is my go-to-guy for my rentals in Pittsburg. He has rebuilt these systems and now helps maintain them in peak working order. Very honest and dependable.“

“We called on the 3rd of July and spoke with Rachel who kindly scheduled our appointment. Diego and Ivan came on the morning of the 5th. They did a thorough job of cleaning our air ducts and exhaust fan. They also explained every thing they were doing very clearly. Whenever Diego saw any potential issues, he offered solutions. We didn't feel like they were rushing to finish (quality vs quantity). Diego also checked for mold and did not find any. He explained what he would've found had mold been present. They came prepared and we felt we were in very capable hands. Because they do a great job, are knowledgeable, offer clear explanations/solutions, and have a pleasant demeanor, we will always call on them for future HVAC or mold concerns.“

“Black Diamond really came through for us while other companies had alot of excuses. They presented all the options well, and gave us a great price on some well needed maintenance for our system. John and Mike are good people that are easy to work with and personable. They are our "go to" HVAC company now!

If you are looking for some help with your HVAC, I recommend just giving them a call and having a conversation. I was really glad I made that first call.“

“Luis and his team helped install 2 HVAC split zone systems when we did an addition back in 2020. Excellent work there. We had an issue with an older system (2011 install by others) in November 2022. After asking for help from Luis, they investigated and thought it might require a new internal computer board. After waiting for the part to arrive, Luis and his team were able to get it fixed without having to replace the whole system (which I suspect others might have done). So, they seem very knowledgable in HVAC and likely saved a bundle by doing proper work and determining the root cause and fixing just that.“

“Great people and an amazing company! I would recommend them to anyone in need of A.C. Repair!“

“i needed a new furnace for my rental property and Josh gave me a good price and installation was prompt- very patient and answered all of my questions- i would use his services again“

“Great job by Mario, we have an old GE Profile side by side refrigerator, it was not cooling down. We were ready to replace it, but nowadays fridge are expensive. So we looked around for a local repair person. Mario was able to fix it, he got it working, price is reasonable, Thanks Mario for your help.“

“Cali Climate was amazing. They were efficient, timely and professional. I totally appreciate the tech Luis. He was very knowledgeable and fixed my AC unit in time for the upcoming heat wave. Can't say enough about this company.Service: A/C system repair“

“Fernando was amazing!! He came out and diagnosed the AC unit and was able to get it working. There was a snag on Saturday evening and he didn't hesitate to come out and take a look.
Unfortunately there was one more part that needed to be replaced. Fernando was able to replace and had our AC running perfectly again. We really appreciated is attentiveness and the cost was very“