A new system here runs harder than almost anywhere in Texas. We size it to your home with a real load calculation and show you the efficiency math — no guesswork, no upsell.
A new air conditioner is one of the larger purchases a homeowner makes, and in San Angelo it’s also one of the hardest-working appliances you’ll ever own. With around 30 days a year over 100°F, the system you install will run an enormous number of hours before it’s through. Getting the size, the efficiency, and the installation right isn’t a luxury here — it’s the difference between a system that quietly does its job for 15 years and one that struggles, short-cycles, and drives your bills up from day one.
The most consequential decision in any installation happens before a single tool comes out: sizing. A unit that’s too big cools the air quickly but shuts off before it removes humidity, leaving the house clammy and the equipment cycling on and off in a way that wears it out. A unit that’s too small never catches up on a 95° afternoon and runs itself into the ground trying. Neither is cheaper in the long run.
We size with a proper load calculation — your square footage, ceiling heights, insulation levels, window count and orientation, and the cooling load for our IECC Climate Zone 3B (hot-dry) — not a rule of thumb scribbled on a business card. The house tells us the size; we listen to it.
Efficiency ratings matter more here than in mild climates, simply because the system runs so much. As of January 2023, the Department of Energy set the Southeast-region minimum at 14.3 SEER2 for most new split-system central air conditioners; larger systems (three tons and up) carry a 13.8 SEER2 floor. Those are the minimums — the floor, not the goal. Because your compressor will run thousands of hours a year, stepping up to a higher-SEER2 system often returns the difference in energy savings well within the life of the equipment. We’ll show you the run-cost math for the specific models we’re comparing, so you can decide with numbers instead of a sales pitch.
A few patterns tell us a system is genuinely near the end rather than worth another repair. If your AC is more than about 12–15 years old, has needed multiple repairs in recent summers, uses the old R-22 refrigerant (phased out and now extremely expensive), or is driving steadily climbing energy bills despite running constantly, you’re usually better served by replacement than by pouring money into an aging unit. Rooms that never balance, a system that can’t hold the house below the mid-70s on a 100° afternoon, and loud new noises are all signals worth an honest look. We’ll tell you where your system actually stands.
A standard changeout — replacing an existing system with comparable equipment — is typically a single day. We protect your floors and work areas, safely recover the old refrigerant, remove the old equipment, and set the new indoor and outdoor units. Then comes the part that separates a good install from a mediocre one: we pull a proper vacuum on the line set to remove moisture, weigh in the exact refrigerant charge, verify airflow, and test the system across a full cooling cycle before we call it done. You’ll get a walkthrough of the new thermostat and your filter schedule, and we haul away the old equipment. Bigger projects — new ductwork, electrical upgrades, or relocating equipment — take longer, and we’ll give you a realistic timeline up front.
For a lot of San Angelo homes, a heat pump is worth a serious look — it cools identically to a central AC and heats efficiently through our mild winters, replacing two systems with one. We cover that fully on the heat pump installation page. If a conventional AC paired with your existing furnace is the better fit, we’ll say so. Either way, you’ll get an honest recommendation for your home, your ductwork, and your budget. Call (325) 308-0897 to start with a straightforward, no-pressure quote.
Every climate, code, and efficiency figure on this page traces to a public, authoritative source. We do not publish statistics we cannot cite.