“I manage rentals by the university and Moorhead is the only crew that tells me straight what needs fixing and what does not. Saved me from a new system a tech at another company swore I needed.”
Replacing a system 10+ years old in San Marcos? We run an actual load calculation, quote it in writing, and install the right-sized unit — not whatever is on the warehouse shelf.
Thanks for reaching out. We've got your request and we'll be in touch shortly, usually the same day. Need us right now? Call (830) 587-5790 — we're open 24/7.
Right-sized, not oversized
An oversized AC short-cycles, never pulls the humidity, and wears out early. An undersized one runs forever and never catches up. We measure your San Marcos home — square footage, windows, insulation, ductwork — and size the system to it.
Then we quote it in writing, all-in, before any work starts.
Call (830) 587-5790A new system is a 15-year decision. Here is how we make sure yours fits your San Marcos home instead of the installer's schedule.
We run a proper load calculation, not a rule-of-thumb guess off the old unit's label. Half the systems we replace were oversized to begin with — which is exactly why the house felt clammy and the bills ran high.
You get the price in writing before we start — equipment, labor, permit, and haul-off of the old unit. No "starting at," no surprise add-ons when the truck shows up in San Marcos.
A higher-SEER system can meaningfully cut the cooling side of your bill through a Hays County summer. We show you the real payback math and let you decide — we are not working a quota.
If your system is repairable and worth repairing, we say so. We are not going to push a $9,000 replacement on a unit that needs a $275 contactor. Replace when it is 10+ years old and the repair tops half the replacement cost — otherwise, fix it.
The older neighborhoods around Belvin Street and downtown have homes that predate central air entirely. That means undersized panels, two-prong outlets, ungrounded circuits, and sometimes knob-and-tube still in service. We modernize it safely and pull the City of San Marcos permit so it is documented for resale.



From the rental streets around Texas State to the historic Square and the new builds toward the Blanco River, we cover San Marcos along the IH-35 corridor. A few of the areas:
Slide your home size and see a real installed price — no email required.
“I manage rentals by the university and Moorhead is the only crew that tells me straight what needs fixing and what does not. Saved me from a new system a tech at another company swore I needed.”
“Our house by the river was always muggy. They added a dehumidifier and sealed the ducts, came up from Seguin same week, and the price matched the quote exactly. Comfortable for the first time.”
“Our house by the river was always muggy. They added a dehumidifier and sealed the ducts, came up from Seguin same week, and the price matched the quote exactly. Comfortable for the first time.”
Tell us what the system's doing and we'll get right back to you — usually same day, anywhere in San Marcos. Prefer to talk? Call (830) 587-5790, day or night.
Thanks for reaching out. We've got your request and we'll be in touch shortly, usually the same day. Need us right now? Call (830) 587-5790 — we're open 24/7.
Free load calc, written quote, right-sized the first time.