At Grandmark Service Company, we provide professional commercial air conditioning repair to buildings and offices. Our team of highly-trained technicians are experts in commercial equipment and know how to get the job done quickly and efficiently. Whether you're experiencing a problem with your thermostat, your compressor, or your ductwork, we can help!

When Your A/C Breaks or Needs Replacement

Financing Available 18 Months No Payments No Interest.

When Your A/C Breaks or Needs Replacement

Financing Available 18 Months No Payments No Interest.

Why Choose Grandmark Service Company?
There are many reasons to choose Grandmark Service Company for your commercial AC needs. First and foremost, our team is highly trained and experienced in repairing all types of commercial air conditioning units. We also understand that time is of the essence when it comes to business, which is why we offer fast and reliable service. In most cases, we can even provide same-day service!

In addition, we offer competitive pricing and a 100% satisfaction guarantee. We understand that your AC unit is a crucial part of your business, which is why we work hard to ensure that you're happy with our service.


Book a consultation with our expert comfort advisors and let the rest to our awesome team.


There are a few common problems that we see with commercial AC units. One is improper installation. When an AC unit is not installed correctly, it can lead to a number of issues down the road, including decreased efficiency and increased repairs. That's why it's so important to make sure that your AC unit is installed by a professional who knows what they're doing.

Another common problem is a lack of maintenance. Just like your car, your AC unit needs regular tune-ups in order to function properly. When AC units aren't properly maintained, it can lead to increased wear and tear, which can shorten the lifespan of the unit. In addition, neglecting your AC unit can also lead to higher energy bills as the unit has to work harder to cool your space.


If you're having problems with your commercial AC unit, don't hesitate to give us a call at Grandmark Service Company. Our team of certified technicians are experienced in troubleshooting and repairing all types of commercial AC units. We understand that businesses can't afford to be without air conditioning for long, so we work quickly to get your system up and running again. Contact us today for all your commercial AC repair needs!

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  • I recently used Grandmark Service Company for a roofing repair project and new ductwork for my central air and heat unit. Two new solar light tubes and two exterior roofing vents for my whole house fan. First Grandmark was quick in sending out a Technologist to assess my roofing repair. The repair was done in a very professional manner with special attention paid to a down spout. I can't thank that tech enough for the excellent work and attention to detail. I then decided upon inspection of my existing ductwork to have it replaced. Again, the crew removed all the old ductwork out the top of the attic where the new exterior vents would be placed saving me a ton of clean up. Throughout this process they provided tarps on the floor and did a thorough clean up at the end of the day's work. All crew member's were professional and friendly and answered any questions. If I could I would give them ten stars. But for this review five stars will have to do. Again, thank you Grandmark service company. I won't hesitate to use you again should the need arrive.

    thumb John Ruch
    November 26, 2022

    Recently moved to the central valley, got 3 quotes from other companies that were way over priced. They finished the job in less than two weeks. Highly recommend this crew..will be using them for solar install in the future

    thumb Ruben Hernandez Avina
    November 19, 2022
  • Tony Arevalo was very professional and helpful. Grand mark service is awesome. Best experience I have had with HVAC so far.

    thumb nike omijori
    November 10, 2022

    Tony very professional. We we very pleased and estacic with everything Tony did for us.

    thumb Albert Scott
    November 10, 2022