Texas Cooling Help
A single-story brick house with a dark shingled roof sits behind trimmed shrubs, framed by large overhanging oak branches, with a dry grass lawn blurred in the foreground.

AC Installation in Seguin, TX

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Step 1 of 3: Equipment

Electricity here runs 14.94 cents per kilowatt-hour

Texas homes paid that on average in 2024. A new AC system runs on that rate for as long as it sits in your home, and a unit that wastes power shows it on every bill.

Efficiency is worth paying for at installation

The rating you choose now sets what the system costs to run every month after. A lower efficiency unit costs less to buy and more to run, for as long as you own it.

7 months
April through October, your air conditioner is on duty
95°F
the average summer afternoon it cools against
34 hail events
in ten years, and hail bends the fins on outdoor coils
13.4 SEER2
the federal minimum any new unit must meet
Isometric cutaway illustration of a small house showing interior rooms with furniture, an indoor air handler with ducts in the attic space, and refrigerant lines running to an outdoor condenser unit on a pad.
Your air conditioner works hardest from May through September.

NOAA nClimDiv, 1991–2020 normals

Electricity heats 84.6% of homes in Guadalupe County.

A new AC system almost always means a new heat pump or electric furnace too, so this install is really two decisions, not one.

Seven months of 95-degree afternoons is what your new system is signing up for

Cooling runs April through October
Summer afternoons average 95°F
Power costs 14.94 cents a kWh statewide
Get it done before AprilCooling runs April through October here, so March is the month to have it in.

Guadalupe County saw 104 severe weather events between 2015 and 2024, including dozens of hailstorms and damaging wind. An outdoor condenser sits outside year-round, so it takes that weather directly. Where the installer places it, and what if anything shields it, is worth deciding now rather than after a hailstorm. Power loss is the other side of this. A third of Texas households went at least a full day without power in 2024, and when the grid goes down a heat pump or AC system goes down with it. If backup power matters to you, that's a conversation to have during installation, not after the next outage.

The system has to clear 14.3 SEER2 here, so start from what qualifies

Zone 2A means cooling is the main load on this system, and the installed minimum here is 14.3 SEER2, higher than what the rest of the country requires. That floor is already built into what a licensed installer can sell and install in Guadalupe County. A system that clears it may also qualify for the federal tax credit on efficient equipment, worth checking before you settle on a unit.

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A gray residential air conditioning condenser unit mounted on a concrete pad outdoors, surrounded by green grass under a partly cloudy blue sky.

Sized wrong, and you live with it seven months a year

Get the size wrong on a system that runs this hard and the mistake does not sit quiet. Too small, and it never catches up on the afternoons that hold at 95. Too big, and it shuts off before it pulls the moisture out of the air, so the house feels damp even at the temperature you set. Either way you are living with it every day this runs, which here is April through October. Sizing to the house, not to whatever unit was there before, is what a load calculation is for. Ask whether the installer is running one.

The size of the job, not just the unit

A straight swap, same spot, same ductwork, same electrical, is the simplest version of this job. Add new ductwork, a line set that has to run farther, or a breaker panel that needs upgrading to carry the new system, and the labor and material climb with it. The unit itself is only part of what you're paying for.

Matched equipment, priced together

The cooling side usually means a new heat pump or furnace paired with it, so the quote covers both pieces of equipment and the work to set them. A mismatched coil and condenser can undercut the efficiency rating you paid for, so an installer pricing them as a matched pair is protecting what you bought, not padding the bill.

An outdoor air conditioning condenser unit on a concrete pad next to the gray vinyl siding of a residential home.

A higher-efficiency unit would save about $40 a year to run in Guadalupe County compared with a new unit at the federal minimum.

  • A higher-efficiency unit$520 a year
  • A new unit at the federal minimum, 14.3 SEER2$560 a year

Estimates for a typical Guadalupe County home, from EIA household energy data, Texas fuel prices and NOAA climate normals. Your home will differ.

Installation day starts with the old equipment coming out, not the new one going in. The condenser outside gets disconnected and hauled off, and if there's an old furnace or air handler paired with it, that comes out too. The line set gets replaced or flushed, because old refrigerant oil left behind can contaminate a new system. Ductwork gets checked at the connections for leaks or crushed sections while it's open and accessible. The new coil goes in, the new condenser gets set on its pad outside, and the line set between them gets brazed, pressure tested, and evacuated before any refrigerant goes in. Once it's charged and the electrical is tied in, the installer runs the system and checks airflow at the vents, the temperature split between the air going in and the air coming out, and that the refrigerant charge matches what the equipment calls for. None of that last part is visible from the couch, but it's the difference between a system that hits its rated efficiency and one that just runs.