Texas HVAC Pros
An outdoor central air conditioning unit mounted on a concrete pad beside a blue-sided house at sunset.

AC Installation in Killeen, TX

A new air conditioner in Killeen will run from April through October every year. Tell us about the house, and a licensed contractor who covers Bell County will get in touch.

Tell us about the job

It takes about a minute.

Step 1 of 3: Equipment
An outdoor air conditioning condenser unit installed beside the exterior wall of a blue vinyl-sided house at sunset.

Seven months of Texas heat asks a lot of a new system

Your air conditioner in Killeen runs April through October, seven months a year, with summer afternoons averaging 95°F. That is most of the year spent working, not a short stretch of the calendar. A system sized right for that load matters more here than somewhere cooling is only a summer job.

Any new central air conditioner installed here has to meet the federal minimum of 14.3 SEER2. That is the floor, not a feature, so what separates one installation from another is how well it is sized and set up for a house that leans on cooling most of the year.

7 months
April through October, your air conditioner is on duty
95°F
the average summer afternoon it cools against
116 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 single-story house showing interior rooms, ductwork and an air handler in the attic space, and an outdoor condenser unit connected by lines at the exterior wall.
Your air conditioner works hardest from June through September.

NOAA nClimDiv, 1991–2020 normals

An outdoor air conditioning condenser unit positioned beside a blue-sided house at sunset.

A higher-efficiency unit would save about $30 a year to run in Bell County compared with a new unit at the federal minimum.

  • A higher-efficiency unit$470 a year
  • A new unit at the federal minimum, 14.3 SEER2$500 a year

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

Texas requires HVAC contractors to hold a state license.

The Texas Department of Licensing and Regulation tests and records HVAC contractors before they can hold a license, and that license belongs to the contractor, not to any single job. It means the person working on your system had to prove they know the trade before the state let them take it on.

For an air conditioner installation, that license is what stands behind the person doing the work, and in most cities and counties in Texas the job also needs a permit from the local building office, with an inspection once it is done. The inspection is what catches a bad connection or a wiring mistake before it becomes a problem you live with.

Source: Texas Department of Licensing and Regulation

What size air conditioner does my house need?
The right size comes from a load calculation, not a rule of thumb based on square footage alone. A contractor will look at your insulation, your windows, how many stories you have, and which way your house faces before landing on a number. With summer afternoons here hitting 95°F for months on end, an undersized unit will run constantly and still struggle, while an oversized one cools the air fast without pulling out the humidity. Either way you end up uncomfortable, so it's worth having someone measure the house rather than guess.
Should I replace the whole system or just the outdoor unit?
In most cases you replace both together. The outdoor condenser and the indoor coil are matched to work at a specific efficiency and capacity, and pairing a new condenser with an old coil usually means you lose the efficiency gain you're paying for, sometimes voiding the warranty too. If your indoor coil and ductwork are still in good shape and fairly new, a contractor can tell you whether they're compatible with a new outdoor unit. Given the hail here, with 116 events and stones up to 5.68 inches over the last ten years, it's also worth having the whole system checked for hidden damage before deciding.
Do HVAC contractors in Killeen need a state license to work on my home?
Yes. Texas requires HVAC contractors to hold a state license, issued by the Texas Department of Licensing and Regulation. Ask to see it before work starts, and confirm it's current if you're not sure.