Find a 24/7 AC Repair Technician in San Antonio, TX
When summer humidity hits and your AC quits, every hour matters. Connect with an independent local HVAC pro — our phone line is open 24/7.
By Gyanesh Gulshan — Founder, Cool Call Pro
HVAC emergencies in San Antonio
Call Now — (844) 582-179524/7 call line · call to check availability in San Antonio
AC out, blowing warm, or iced over
Outdoor unit silent · indoor blower running but warm air · ice on the refrigerant lines · short-cycling on/off. Possible causes range from electrical parts (capacitor, contactor) to a refrigerant problem — both need a technician to diagnose.
Furnace not igniting or blowing cold
Furnace won't ignite · blowing cold air · short-cycling · burning smell on first startup. If you smell gas, leave the building right away without flipping switches or using phones inside, then call 911 or your gas utility’s emergency line from outside.
Water dripping from vent or air handler
Water from a ceiling vent · pooling near the indoor air handler · drain pan overflowing. Typical causes of condensate overflow include a clogged or dislodged drain line, a cracked or corroded drain pan, a failed condensate pump, and a dirty filter that lets the coil freeze (ACCA). Turn the thermostat off to limit water damage and call a technician.
How Cool Call Pro works in San Antonio
24/7 San Antonio call line
Our phone line is open 24/7. Calls are routed to independent HVAC providers in the San Antonio area where one is available; hours, weekend and holiday coverage, and overnight surcharges are set by each provider.
Call to check availability
Provider availability varies by address and time of day, so call to check availability in San Antonio. The neighborhoods and ZIPs listed for this page are in the Services & service area section below.
Check licenses yourself
Cool Call Pro does not check contractor licenses or insurance. Verify any contractor’s license with the Texas license lookup. Texas rules are in the local data section below.
San Antonio's hot-humid climate & your HVAC
This is a cooling-dominated Zone 2A (Hot-Humid) climate, where humidity control matters alongside cooling. Federal SEER2 14.3 (Southeast Region) minimum applies to new equipment.
Avg summer high
IECC zone (hot-humid)
Avg winter low
Federal SEER2 minimum
Days/yr above 90°F
Days/yr below 32°F
San Antonio had an estimated 1,548,422 residents on July 1, 2025. In San Antonio, the median home was built in 1984 with a current median value of $219,700. Around 52% of homes are owner-occupied. About 29% of households heat with natural gas vs. 70% electric. The Texas grid averages $0.15/kWh. Sources: U.S. Census population estimates · U.S. Census ACS 2019–2023 5-year tables B25035 · B25077 · B25003 · B25040 · U.S. EIA state rates.
Read our guide on preparing your AC for summer.
HVAC in San Antonio, TX: local data & sources
Every numerical claim below references a federal, state, or municipal primary source — NOAA climate normals, U.S. Census ACS, the Texas licensing authority, and your local utility's published rebate program.
NOAA NCEI 1991–2020 Normals
San Antonio International Airport (KSAT) is the NOAA reference station for the city. Per the NOAA NCEI U.S. Climate Normals 1991–2020 (station USW00012921), San Antonio records an annual mean temperature of 69.6°F, approximately 3,147.8 annual cooling degree days against 1,438.4 heating degree days, 32.38 inches of annual precipitation, and essentially no snowfall. The 2.2:1 CDD-to-HDD ratio defines San Antonio as a cooling-dominated Zone 2A hot-humid climate where the AC system carries the system load 7–9 months of the year and high dew points make latent (humidity) cooling as important as raw sensible capacity.
U.S. Census ACS 2023 5-Year
The U.S. Census Bureau ACS 2023 5-year estimates (Tables B25040 and B25035 for San Antonio city, Texas) report 547,883 occupied housing units with a median year built of 1984. Heating-fuel distribution: 69.5% electricity (380,864 units) overwhelmingly dominates, with only 28.6% utility natural gas (156,497 units) and a notable 1,676 solar-heated homes. San Antonio’s electric-heat share reflects both CPS Energy’s competitive municipal electricity rates and the city’s post-1970s heat-pump-centric housing growth pattern.
Texas Dept. of Licensing & Regulation
Every HVAC contractor working in San Antonio must hold a current Air Conditioning and Refrigeration Contractor license from the Texas Department of Licensing and Regulation (TDLR), governed by Texas Occupations Code Chapter 1302 and 16 Texas Administrative Code Chapter 75. The Class A Environmental Air Conditioning license entitles the holder “to engage in air conditioning contracting…of any size or capacity.” The Class B Environmental Air Conditioning license is limited “to a system, a product, or equipment of not more than: (1) 25 tons cooling capacity; or (2) 1.5 million British thermal units per hour output heating capacity.” For typical San Antonio residential work, a Class B contractor is fully qualified. Permit fees for residential mechanical work are set by the City of San Antonio Development Services Department; contact DSD directly for the current fee schedule.
CPS Energy
San Antonio is served by CPS Energy, a municipal utility owned by the City of San Antonio and uniquely positioned among Texas utilities — because Texas retail electricity is deregulated under ERCOT elsewhere, but CPS operates as a vertically integrated municipal utility with rates set by City Council. Per the CPS Energy Save for Tomorrow Energy Plan (STEP) HVAC Rebates Specifications, rebates are structured per cooling ton, scaled by efficiency tier and replacement timing. Early Replacement rebates: $115/ton at 13.8–15.1 SEER2, scaling up to $310/ton at 20.0+ SEER2. Replace-on-Burnout rebates: $90/ton at 13.8–15.1 SEER2, scaling to $275/ton at 20.0+ SEER2. Minimum efficiency for rebate eligibility is 14.3 SEER2 / 11.7 EER2 for units under 45,000 BTUh; heat pumps require 7.5 HSPF2. For a typical 3-ton residential system at the minimum tier, that’s $270–$345 in rebates; at the top tier, $825–$930. Separately: WiFi Thermostat Rewards — $85 enrollment credit + $30/year bill credit, and contractor-installed attic insulation $0.35/sq ft ($0.25/sq ft self-installed). The insulation rates are listed on the CPS Energy Home Energy Rebates Specifications page.
The federal Section 25C Energy Efficient Home Improvement Credit was terminated for installations placed in service after Dec 31, 2025 by the One Big Beautiful Bill Act (Public Law 119-21). Check your state energy office and utility for current rebate programs. See our HVAC financing options for what's still available.
Services & service area
Services you can ask about
- Emergency AC Repair in San Antonio
- Humidity Control & Dehumidification
- Central AC Installation & Replacement
- HVAC System Maintenance & Tune-Ups
- Ductwork Inspection, Cleaning & Mold Prevention
Neighborhoods & ZIPs listed for San Antonio
- Alamo Heights
- Terrell Hills
- Olmos Park
- Stone Oak
- King William
- ZIP codes: 78209, 78212, 78201, 78258, 78216
HVAC repair costs: national ranges for San Antonio, TX homeowners
Cool Call Pro editorial estimates of typical U.S. prices from our 2026 cost guide — not quotes and not San Antonio-specific. Actual price varies by provider and complexity.
Diagnostic / service call
$65–$150
Some providers credit it toward the repair — ask when you call
Minor AC repair
$75–$500
Capacitor, contactor, thermostat, drain line
Refrigerant recharge
$150–$600
R-410A per recharge; leak fix extra
After-hours surcharge
$100–$300
Added to repair cost on emergency calls
See full repair, install, and replacement ranges in our 2026 HVAC Cost Guide and how we build these ranges →
Ready to talk to an HVAC pro in San Antonio?
Independent technicians · 24/7 call line · Verify any contractor’s license with the Texas license lookup
Call Now — (844) 582-1795Disclosure: We are a referral service and may receive compensation for qualified calls. Calls may be routed to an independent provider network and may be recorded. Pricing and availability vary by provider and location.
Frequently Asked Questions — San Antonio, TX
Yes, ensure your contractor files a mechanical permit with the City of San Antonio Development Services Department. Pulling the correct permits protects you as a homeowner and ensures work is inspected to code.
Rebate programs for San Antonio homeowners are summarized, with sources, in the Local Rebates & Permits card above. Confirm current amounts and eligibility with your utility (CPS Energy (municipal)) before scheduling work. The federal Section 25C credit was terminated for installations placed in service after Dec 31, 2025 (One Big Beautiful Bill Act, P.L. 119-21); check your state energy office and utility rebate programs instead.
The neighborhoods and ZIP codes listed for San Antonio are in the ZIPs & Neighborhoods card above. Provider availability varies by address, so call (844) 582-1795 to check availability in San Antonio.
Cool Call Pro’s editorial estimate for a standard AC replacement in San Antonio is $4,200–$10,000, and for furnace installations $2,800–$5,500. These are our own estimates, not quotes or survey data — see how we build cost ranges. Costs vary with system size, efficiency rating, and installation complexity. In Texas, new AC units must meet a minimum SEER2 14.3 (Southeast Region) rating.
In Texas, HVAC contractors should hold this license: TX TDLR Air Conditioning & Refrigeration Contractor License. Always verify your contractor’s credentials before authorizing work. For San Antonio residents, permits are filed through the City of San Antonio Development Services Department.