Here when you need us
HVAC Contractor in San Antonio
Need an HVAC contractor in San Antonio right now? Call or text (210) 574-8857. Day or night, you’ll get a real person.
When we say we’ll be right over, we mean it
No job closes until you’re satisfied with the work.
Did you know?
During Winter Storm Uri in February 2021, San Antonio stayed below freezing for roughly 107 hours straight. The low hit 9 degrees. Houses built for 100 degree summers found out fast what their heating side couldn’t do.
Questions & Answers
Call or text (210) 574-8857. Real people answer that line 24 hours a day, every day, including nights, weekends, and holidays. San Antonio no-cool and no-heat calls get routed to whichever crew is closest.
Yes, texting Absolute Zero at (210) 574-8857 works for scheduling, questions, and updates. Send the address, what the system is doing, and a good arrival window, and dispatch will confirm a time. Calling is faster for an emergency in the middle of a San Antonio summer night. Messages through the Facebook page reach us too.
The phone is staffed 24/7, and standard service visits run during normal business hours across San Antonio. After-hours, weekend, and holiday calls are covered by the on-call crew for no-cool and no-heat emergencies. Maintenance visits, installs, and non-urgent repairs get scheduled during the day.
The company works out of San Antonio’s far northwest side, in the 78254 area. That puts Loop 1604, Bandera Road, and Highway 151 on the daily route, along with Helotes, Leon Valley, Boerne, and Fair Oaks Ranch. Absolute Zero is a service-area business, so techs come to you.
Have the address, the thermostat setting and what the house is actually reading, and what the system is doing: no air, warm air, odd noise, water, or nothing at all. The age and brand of the equipment help, and the model and serial numbers on the outdoor unit help more. Say whether the breaker has tripped and whether the filter is new. That’s usually enough for the tech to bring the right parts to your San Antonio home.
For most repair visits, yes, because the tech needs access to the thermostat, the indoor air handler, and the outdoor unit, and someone has to approve the work. An adult over 18 is fine. For maintenance at a business, a manager with keys and roof access works. Absolute Zero calls ahead so nobody sits waiting all afternoon.
Dispatch calls or texts before the tech leaves for your address, with an arrival window instead of a whole day of waiting. If the call ahead of yours runs long, you get a heads up rather than silence. San Antonio traffic on Loop 1604 and Bandera Road moves afternoon windows, and Absolute Zero updates you when it does.
Turn the system off at the thermostat if it’s frozen or blowing warm, so the compressor isn’t running for nothing. Close blinds on the sun side, shut doors to unused rooms, and run ceiling fans where people are. An unconditioned San Antonio house heats up fast on a July afternoon, so check on older neighbors and pets. Water and a cool shower help until the truck gets there.
Service Hours:
Address:
Phone:
Please Review Us
Copyright © 2026. All rights reserved.