Get matched with top gas heating and furnace pros in Modesto, CA

"I was extremely impressed with Lionel. I called him in the evening after normal work hours and he answered the phone. We scheduled the installation he was there at 8am and completed the job with no issues. He beat out 4 other bids and his service is a rare thing to see these days. He is my new go to guy for any issue such as heating. Water heaters etc."

"did a good job replacing gas with electric hvac"

"Ken was very informative and got the AC working properly. I will be calling him for any future HVAC needs and would highly recommended AJAX to others."

"Just awesome ,very professional and made it a very comfortable , was informative about how the furnace worked , took his time in checking everything."

With almost 18 years of experience serving the area, we are your solution for all your electrical needs. We take great pride in our extreme professionalism, timeliness and superior customer service on every job. We make sure to develop a lasting relationship so that the next time service is needed there will be no question on whom to call. Check out our 5-star reviews from happy customers! Call us today so we can discuss your needs and make a plan that fits your budget. Satisfaction guaranteed!

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

"Very well....signed up for their ongoing service for air, heat and plumbing."

"They were here an hour after I called and in two hours did a very thorough and expert job. I am quite satisfied."

"Quick response to our needs, our old AC went out in the beginning of a heatwave, we had a new unit installed the next day. Great Service"

"We needed to replace our old 20+ year HVAC system before it quit working which probably would have been in the summer when HVAC companies are the busiest. so I decided to do it winter 2021. Did my due diligence and had three companies come out, present their bids and recommended equipment. Most of the companies were in line with their bids and no one underbid their competitors. All were less than $300 apart. I have 18+ years real estate and property management experience so I have dealt with lots of trades over the years. I chose CenCal because I liked their presentation, the length of time they had been in business and although I didn't know it at the time I chose them, I did know the owner through shared past acquaintances. Knowing our shared acquaintances and their background helped firm up my decision to go with CenCal. From the time CenCal techs started the job until the time they finished the installation, our experience was superior to any other firm I have ever dealt with in the past. They were always on time and thorough with the information they provided. Found we had a leak in our ducts under the house so also had those replaced so all equipment was new out the gate. In addition to the professionalism of the installers, sales rep and quality follow up after the job was completed, CenCal's office staff is some of the best I have ever dealt with in my career. These ladies should give classes to other company's staff people.... they are that good!"