Get matched with top furnace / forced air heating system install or replace pros in Union City, CA

"Duke did a great job at a fair price. We needed AC and decided to replace our old furnace at the same time. In addition Duke wrapped with insulating bubble wrap our old ducts that were exposed. He tied the drip line into our existing downspout in a neat fashion. I'd highly recommend him (he's a fellow submarine vet too!!)."

"We purchased the $49.99 service call. It was very easy to schedule, and we had someone out within a couple of days. The gentleman who came out was very professional and communicated everything that he was doing and finding. At the end, he provided several options for our furnace. One was to just replace the part that was causing our immediate problem; however, our furnace was 27 years old and there were signs that a couple of other key parts were on their last legs. The other options were to replace the furnace with different types of furnaces. I wasn't comfortable making the call on what we would do at the end of the service call and that was fine. There was no hard sell to make an option then and there. I really appreciated that.
After discussing it, my husband and I decided to replace the furnace with one of the options provided. We called the next day and they sent a couple of folks to replace it within a few days. The two gentleman were professional and thorough, and cleaned up everything before they left. They installed our Nest thermometer rather than the thermometer that came with the furnace, and everything has been working great.


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"Global Comfort installed a full HVAC system in my home; 7 new runs for air, new AC unit, new furnace and a new Nest thermostat, all electrical needs. Rudy and his team are respectful, efficient, punctual, competitive in pricing. Rudy walked me through running the system for its first time and explained all the stuff for a brand new system in a house that never had AC. I'm very thankful for the work they did. Highly recommend because their customer service is top notch."

"I recently had a new HVAC system installed by Aireserv, and I couldn't be more pleased with the results. From the beginning, the team was professional, courteous, and informative. They arrived on time and were very thorough in explaining the detailed installation plan, the features of the new system, and how to operate it. The installation went smoothly, and the technicians cleaned the area while working. Once the system was installed, they ran tests to ensure everything was working perfectly and took the time to answer all of my questions. The new HVAC system has been a game-changer in terms of performance. It heats and cools my home more efficiently than my previous unit, and I've noticed a significant improvement in comfort and air quality. The system runs quietly and maintains an even temperature throughout my home. I also appreciate the energy savings I'm already seeing. My energy bills have been noticeably lower, which I can directly attribute to the new system's efficiency. Overall, I'm delighted with the service from Aireserv and the performance of the HVAC system. I highly recommend them to anyone in need of HVAC installation or upgrades. They provided excellent service from start to finish! A BIG THANK YOU TO ALTON THOMPSON AND HIS TEAM FROM AIRESERV."

"Appointment was scheduled between 8am-4pm. Waited all day for the tech (Jeremiah) to arrive. Then received a phone call a little after 3pm indicating they needed to reschedule for the next day almost at the last moment. Needless to say, we got off to a rocky start, but Jeremiah did finally show up around 5pm, isolated the problem in less then 5 minutes, showed me what to do and what not to do when changing batteries out of the thermostat, and pointed out which fuse had blown keeping the furnace from coming on. In conclusion, they made this right, I received a well-needed lesson on minor furnace maintenance, and was able to get the furnace working again. Would I hire this company again? Absolutely, and if you are having problems with your furnace, you might want to consider these people as well!"

"Rittinger responded quickly. Alan, the tradesman they sent over was professional and quick. I hired them to install a clothes dryer vent and to open up a vent in my garage for the hot water heater. The work was high quality and installation was clean."

"Project: Install a Central Air Conditioning System The project was top notch. Not only did they consistently show up on time, but they finished the project early and were willing to reschedule the final walkthrough multiple times to accommodate our city inspection. Final project turned out great!""

"Absolutely the best HVAC company in the area. If you are looking for a company for your HVAC needs, look no further. It is superb in every aspect: customer service, onsite specialist who did the inspection and quoting, technicians who installed the system. Their price is extremely competitive, especially for the high end systems. I was shopping for a 80% 2-stage furnace but I ended up getting a Lennox 99% variable-speed furnace because the price was too good to pass. But it is money well spent. It is so quiet and powerful. I highly recommend Air Sharks. They actually put a smile on our faces."

"They replaced our failed furnace with the same model, efficiently and at a very affordable price. The installer Bob did and outstanding job, and the QC checker Mizael did a thorough follow-up check of the installation and checked each of the furnace vents for adequate heat. The new furnace very quickly heats our home and is the right size for our home square footage. The Comfort Energy company not only gave us the best price, but is also furnishing two complimentary follow-up maintenance checks. This company deserves a 5 star rating."

"Devin was very informative and patient in explaining the different types of furnaces and how they work."