Learning Center
Straight answers about home comfort in San Antonio. Organized so you can learn the basics, weigh your options, and take the right next step.
We built this Learning Center the way we run service calls: answer the question first, skip the pressure. Everything here is written or reviewed by our team and reflects how HVAC systems actually behave in the Texas Hill Country heat. Start with the basics in Learn, weigh trade-offs in Compare, and find your next step in Act.
Learn
Start here
HVAC Glossary
Plain-English definitions of SEER2, tonnage, Manual J, AFUE, and the rest of the jargon.
Read moreHow often should you service your AC in South Texas?
Why our climate zone demands more frequent maintenance than the national average.
Read moreWhy your AC stops working during San Antonio heat waves
The failure modes that show up first when the grid and your system are both maxed out.
Read moreSpring AC maintenance checklist
Eight things to check before the first 100° day hits.
Read moreSmart thermostats 101
How the right thermostat trims a San Antonio cooling bill.
Read moreHVAC tips for pet owners
Keeping airflow and air quality up when there's fur in the house.
Read moreCompare
Weigh your options
Repair or replace your AC?
A decision framework based on age, repair cost, and efficiency, not a sales pitch.
Read moreThe real cost of running your AC in San Antonio
What drives your summer bill and where the savings actually are.
Read moreAC running all day. Why, and what it's costing you
When constant run-time is normal and when it signals a problem.
Read moreHVAC permits & code in San Antonio
When a changeout needs a permit, who pulls it, and why it protects you.
Read moreAct
Ready to move
CPS Energy rebate guide
Step-by-step on qualifying for a CPS Energy rebate on a new system, and how we file it for you.
Read moreAC stopped working at 10 PM? Do these 4 things first
Quick checks before you call, then call us if it's not one of these.
Read moreFinancing options
Spread the cost of a new system over convenient monthly payments. Subject to approved credit.
Read moreStill have a question?
Talk to a real person. At AC American Air, the owner still answers the phone. Get an honest answer and an upfront price, with no pressure.