Best HVAC Repair & Replacement in San Antonio, TX

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Cost Summary

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Contractors Summary

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How much does HVAC replacement cost in San Antonio?

A full central AC system replacement (air conditioner + air handler) in San Antonio typically runs $5,500–$10,000 installed for a 3-ton system at minimum 15 SEER2 efficiency. Adding a gas furnace replacement brings the total to $7,000–$13,000 for the complete system. High-efficiency systems (18–21 SEER2, 96 AFUE) run $10,000–$15,000+. Heat pumps (replacing both AC and furnace) typically cost $7,000–$13,000 installed for a standard 3-ton unit. CPS Energy rebates of $400–$750 offset part of the cost — confirm current rebate programs at cpsenergy.com/rebates. Get at least three quotes from TACL-licensed contractors for any full system replacement.

Do HVAC contractors need a license in Texas?

Yes — Texas requires TACL (Texas Air Conditioning Contractor License) from the Texas Department of Licensing and Regulation (TDLR) for any company performing HVAC installation, repair, or maintenance in San Antonio. Individual technicians must hold TACA (Technician License) in addition to federal EPA 608 certification for refrigerant work. Verify any San Antonio HVAC company's TACL status at tdlr.texas.gov/verify/ before signing a contract. Hiring an unlicensed HVAC contractor in Texas is illegal, and any unpermitted work voids related homeowner's insurance claims.

Why is my HVAC bill so high in San Antonio?

San Antonio's climate — 100°F+ summers with Gulf humidity — is among the most demanding in the U.S. for residential HVAC. Legitimate reasons your CPS Energy bill is higher than neighbors or previous years: aging HVAC system losing efficiency (15–20% efficiency drop is common in systems over 12 years old), refrigerant leak (system runs longer cycles when low on refrigerant), dirty air filter or evaporator coil (reduces airflow and efficiency), duct leakage in older Bexar County homes (20–30% leakage = 20–30% wasted energy), or attic insulation below R-38 (San Antonio's climate zone minimum). A full HVAC tune-up ($75–$150) including coil cleaning, filter check, refrigerant level check, and duct inspection can diagnose most efficiency problems and often pays for itself in one utility billing cycle.

Does San Antonio require a permit for HVAC replacement?

Yes. A mechanical permit is required for full HVAC system replacements from the City of San Antonio Development Services Department. The permit requires a city inspection before the system is covered by drywall or insulation. Permit fees are typically $75–$150. Your licensed TACL contractor should pull the permit as part of the installation — if a contractor tells you a permit isn't needed for a full system swap, that is a red flag. Unpermitted HVAC installations violate city code, may void homeowner's insurance claims, and require disclosure (and potentially retroactive permits or remediation) at time of home sale.

How long do HVAC systems last in San Antonio?

San Antonio's year-round cooling demand significantly shortens HVAC system lifespan compared to milder climates. Typical lifespan expectations in Bexar County: central AC system 12–16 years (vs. 15–20 years in a mild-climate city); gas furnace 18–22 years (longer because heating season is short); heat pump 12–15 years (runs as both heating and cooling unit). Systems that run in high humidity without proper refrigerant charge, with dirty coils, or without annual maintenance degrade faster. Annual professional maintenance ($80–$150/visit) — including coil cleaning, refrigerant check, electrical inspection, and lubrication — consistently extends system life by 2–4 years and maintains efficiency.

What is SEER2 and does it matter for San Antonio?

SEER2 (Seasonal Energy Efficiency Ratio 2) is the efficiency rating for air conditioners under a 2023 DOE testing update that better reflects real-world system performance. Texas requires a minimum 15 SEER2 for any new AC system installed after January 1, 2023 — lower-efficiency units cannot legally be installed. In San Antonio, where AC runs 9–10 months annually, efficiency matters significantly for CPS Energy bills: a 15 SEER2 system uses approximately 35% less energy than a 2010-era 10 SEER system; an 18 SEER2 system uses approximately 50% less energy. The payback period on a higher-efficiency system in San Antonio (where AC usage is extreme) is typically 4–7 years vs. 10+ years in milder climates, making high-efficiency investment more financially rational in San Antonio than in most U.S. cities.