Committment to Service and Quality Since 1972

What do you look for when choosing a commercial heating & air conditioning contractor? Do you need a company that can tailor its services to your facility's needs?

At Holts Mechanical, that’s the HVAC service our team provides. We install and service all major equipment brands, and provide flexible preventative maintenance plans to keep your equipment operating properly.

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Emergency Service 24/7

For after hours service, tap to call 210-661-7500 and press Press option 1 to be transferred to an on-call technician.For after hours service, call 210-661-7500 and press option 1 to be transferred to an on-call technician.

For next business day support, press option 2 to leave a message, or submit a service request below.


  • Air Conditioning Service Trucks
  • Carrier Chiller Piping
  • Package Unit Changeout
  • Daikin Chiller Piping
  • Crane Setting Package Units

New Construction, Finish Out, & Remodels

Planning a design-build or remodel? We're here to get your HVAC installed on schedule.

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Service, Repairs, & Maintenance

We're here for you, whether you need to schedule maintenance or an after-hours unit replacement.

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