Guide · Texas · Updated 2026-10-19

AC repair or replacement: what it costs in Texas

A Texas air conditioner works harder and longer each year than almost anywhere else in the country, which means the repair-or-replace question comes up a lot. There is no dataset specific to Texas cities, but national cost guides give a solid starting range, and a couple of simple heuristics can help frame the decision, as long as you treat them as rough guides and not rules. Here is what repairs and replacements typically cost, where the "$5,000 rule" comes from, and how a system's age and refrigerant type should factor in.

Typical AC repair costs

According to This Old House's air conditioner repair guide, updated 16 March 2026, most AC repairs fall in the $100 to $650 range, though the exact job matters a lot:

Repair	Typical cost
Capacitor replacement	$150 to $400
Drain line cleaning	$80 to $250
Thermostat repair	$100 to $500
Refrigerant leak repair	$200 to $1,500 or more
Compressor or coil repair	Often over $1,000

A failed compressor or evaporator coil is usually where the math starts tilting toward replacement, since those parts are expensive on their own and often signal the rest of the system is not far behind.

Typical AC replacement costs

This Old House puts full central air conditioning replacement, including installation, at $2,500 to $15,000. The exact number depends heavily on home size and the efficiency tier you choose. For a 14.3 SEER2 system, the guide gives a range of roughly $7,376 to $15,988 across home sizes from 1,000 to 4,000 square feet. Higher SEER2 tiers cost more up front but may qualify for a utility rebate; see our guide to SEER2 rules and AC rebates in Texas.

The "$5,000 rule," as a rough heuristic

A common shortcut in the HVAC industry is to multiply your air conditioner's age in years by the estimated repair cost in dollars. If the result is more than $5,000, the heuristic says to lean toward replacing rather than repairing. This Old House describes it this way: "You may need to replace your system if you multiply its age in years by the estimated repair costs and the result is more than $5,000."

Two quick examples make the math clear:

A 12-year-old system needing a $500 repair: 12 x $500 = $6,000, above the $5,000 line, leaning toward replacement.
A 7-year-old system needing a $400 repair: 7 x $400 = $2,800, below the line, leaning toward repair.

Treat this strictly as a rough heuristic, not a formula to follow blindly. It ignores how often the system has already needed repairs, whether parts are still under warranty, how much you would save on energy bills with a newer, more efficient system, and whether the specific failed part (a capacitor versus a compressor) is cheap and routine or a sign the whole system is failing. Use it as a conversation starter with your contractor, not a final answer.

Age and lifespan

This Old House notes that residential cooling systems usually last 12 to 15 years, depending on how heavily they are used, which in Texas often means on the shorter end of that range. Other signals worth weighing alongside age:

The repair cost is more than half of what a new system would cost.
The unit is breaking down repeatedly rather than this being an isolated failure.
Energy bills have climbed noticeably as the system has aged, suggesting it is running less efficiently even when it is "working."

R-22 refrigerant and the EPA phaseout

If your system still uses R-22 refrigerant, sometimes sold as Freon, that is itself a strong signal toward replacement, separate from any repair cost math. The EPA's phaseout schedule for HCFC-22 (R-22) restricted production and import starting in 2010, and production and import ceased entirely on 1 January 2020. According to the EPA, you are not required to replace existing R-22 equipment, and technicians can still legally service it: "HCFC-22 (also called R-22) can be used to service existing equipment." But the agency is also direct that supply is now limited to recycled and reclaimed refrigerant, and that "the price and availability may change" over time. In practice, a refrigerant leak repair on an aging R-22 system can cost far more than the same repair on a newer system using current refrigerant, simply because the refrigerant itself is scarcer and pricier. The EPA states there is "no EPA mandate for converting existing HCFC-22 equipment," so the decision is a financial one, not a legal one.

Get a second opinion on a big repair

A quote for a major repair, a new compressor or a full coil replacement, for example, is worth a second opinion before you commit, the same way you would get a second quote on a roof. A technician who is also trying to sell you a new system has an incentive to recommend replacement, so a second diagnosis from a company that is not in the running for the replacement job can help confirm whether the repair is really the dead end it is being presented as. This is also the point to ask directly what brought the system down: a single failed part is a different situation from a system that keeps breaking down every cooling season.

Putting it together

A simple way to frame the decision: if the system is under 10 years old, uses current refrigerant, and the repair is a routine part like a capacitor or thermostat, repair is usually the better financial move. If the system is pushing 12 to 15 years old, still runs on R-22, or needs a major component like a compressor, get a replacement quote alongside the repair quote before deciding. For picking who does either job, see our guide to how to pick an HVAC company in Texas.

Getting quotes either way? Compare the ten most-reviewed AC repair companies near you.

See the top 10 AC repair companies

AC not keeping the house cool? Tell us what is going on and a top-rated Texas AC company will call you to set up a service call.

Common questions

What is the $5,000 rule for AC repair versus replacement?

It is a rough heuristic, not a rule: multiply your air conditioner's age in years by the estimated repair cost. If the result is more than $5,000, that is a signal to consider replacement rather than repair, though it should not be your only factor.

How much does it cost to repair an AC unit?

Most repairs run $100 to $650, according to This Old House, with capacitors around $150 to $400, thermostats $100 to $500, and refrigerant leak repairs $200 to $1,500 or more. Compressor or coil repairs often exceed $1,000.

How much does it cost to replace a central air conditioner?

This Old House puts full replacement, including installation, at $2,500 to $15,000, with a 14.3 SEER2 system running roughly $7,376 to $15,988 depending on home size.

Do I have to replace my AC if it still uses R-22 refrigerant?

No. The EPA says there is no mandate to replace existing R-22 equipment and technicians can still legally service it, though only with recycled or reclaimed R-22 now that production and import ended on 1 January 2020, so repair costs on R-22 systems can run higher.

Sources

Checked 2026-10-19.