What Does AC Replacement Cost in Houston? What Drives the Price

Published October 16, 2026 · Reviewed October 16, 2026

Part of our AC Installation & Replacement guides.

What does AC replacement cost in Houston?

The installed cost of a new central air conditioner in Houston depends on the size your home actually needs, the efficiency and type of equipment you choose, and how much work the installation itself requires. Two homes on the same street can get very different quotes for honest reasons: one has an easy-to-reach air handler and sound ductwork, the other has a cramped attic, undersized returns and a line set that has to be replaced.

That is why this guide does not publish a price. A national figure cannot see your attic, panel or ducts, and it can anchor you to the wrong expectation. What this guide does instead is explain every factor that moves the price, show which ones move it a little and which ones move it a lot, and list what a complete written quote should include so you can compare offers fairly.

The honest answer to "what does AC replacement cost?" is: it depends on the size, efficiency and installation complexity of your specific system, and the only reliable number is an itemized quote written after someone has looked at your home.

Most "AC replacement" jobs in Greater Houston are split systems: an outdoor condenser plus an indoor coil that sits on a furnace or air handler, usually in the attic. Replacing the outdoor unit and the matching indoor coil together is the normal scope. Some jobs also replace the furnace or air handler, which changes the price considerably.

What drives the installed price of a new AC?

System size, efficiency tier, compressor type and the amount of installation work are the four biggest drivers of an installed AC price. The table below lists the common factors and how each one tends to affect a quote.

What drives the installed price of a central AC replacement in Greater Houston

Factor	What it means	Effect on the installed price
System size (tonnage)	Cooling capacity, set by a load calculation for your home	Larger systems raise the price; correct sizing can lower it if the old unit was oversized
Efficiency (SEER2)	Seasonal efficiency rating; the Southeast minimum is 14.3 SEER2 for most split systems	Each step above the minimum raises the equipment price; it can lower operating costs over time
Compressor type	Single-stage, two-stage or variable-speed	Two-stage raises the price; variable-speed can raise it sharply
Indoor unit scope	New coil only, or a new furnace or air handler as well	Replacing the furnace or air handler too can raise the price sharply
Attic access	How hard it is to reach and work on the indoor equipment	Tight, hot or hard-to-reach attics raise labor
Refrigerant line set	The copper lines between the indoor and outdoor units	Reusing a suitable line set is usually small; replacing a long or inaccessible one raises the price
Ductwork	Repairs, sealing, resizing or replacement of supply and return ducts	Minor sealing is usually small; replacing or redesigning ducts can raise the price sharply
Electrical	Disconnect, breaker and wiring sized for the new unit	Usually small if the existing circuit fits; panel or wiring upgrades raise it
Pad and placement	Condenser pad, stand or relocation	Same-location replacement is usually small; relocating the unit raises it
Thermostat	Basic, programmable or a control matched to a two-stage or variable-speed system	Usually small; some multi-stage systems require a specific control
Permit	A mechanical permit where the city requires one	Usually small, but a permit fee can be doubled in some cities if work starts first
Removal and disposal	Recovering refrigerant from and hauling away the old equipment	Usually small, but it should be listed

If you are weighing compressor types, our guide to single-stage vs. two-stage vs. variable-speed AC explains what each one does for comfort and humidity, which helps you decide whether a higher tier is worth it in your home.

Which Houston-specific factors change the price?

Attic installations, humidity-driven sizing, the regional efficiency standard and the refrigerant transition are the four local factors that most often change a Houston AC quote.

Attic air handlers and furnaces

In many Greater Houston homes the indoor coil sits on a furnace or air handler in the attic. Attic work in summer is slower and harder, and the condition of the attic platform, the drain pan and the condensate line all show up in the scope.

Sizing by load calculation, not by the old label

The professional standard for sizing a home's cooling system is a load calculation using ACCA Manual J. Sizing matters more in Houston than in a dry climate, because an oversized AC cools the air quickly and shuts off before it has removed much moisture, leaving the house cool but clammy. Copying the old unit's tonnage repeats any original mistake. Sometimes a correct load calculation points to a smaller system than the one you have, which can lower the price.

The SEER2 minimum

Under the U.S. Department of Energy standards that took effect in 2023, new split-system air conditioners installed in the Southeast region, which includes Texas, must meet at least 14.3 SEER2 below 45,000 Btu/h and 13.8 SEER2 at or above it. Every quote you receive should meet that floor; the price question is how far above it you go. See SEER2 ratings explained for what the numbers mean.

Refrigerant: R-410A, R-32 and R-454B

Under the EPA's technology-transition rules, new residential split systems manufactured from 2025 use lower-global-warming-potential refrigerants such as R-32 and R-454B. Goodman's current residential split systems use R-32. In a final rule published May 26, 2026, the EPA removed the earlier installation deadline for qualifying R-410A equipment, so units manufactured before 2025 may still be installed until they are used up; legal challenges to that rule are pending. A quote may therefore offer either refrigerant. Ask which one the system uses, because it affects which indoor coil can be paired with it and whether the line set can be reused. Some A2L installations also require a refrigerant leak-detection sensor, which can add a small line item. Our refrigerant change explainer has the background.

Do permits affect the cost of AC replacement?

A permit adds a fee and an inspection step in the cities that require one, and the fee itself is usually a small part of the total. This is general guidance, not legal advice; confirm the current rules with your local building department.

• The Houston Permitting Center requires a mechanical permit for HVAC alterations, including condensing-unit replacement.
• The City of Sugar Land requires a permit for HVAC repair, replacement or addition, and doubles the fee if work starts before the permit is issued.
• The cities of Katy, Pearland, Missouri City, Pasadena, Jersey Village and Humble also issue mechanical permits for HVAC work.
• In unincorporated areas such as Spring, Aldine, Cinco Ranch, Fresno and The Woodlands, no county residential mechanical permit was found; the state code standard in 16 TAC §75.100(e) still applies.

In The Woodlands, Township covenant rules also apply: compressors must meet current code, and replacing a unit in the same location is pre-approved, so relocating it may need Township review. Our guides to HVAC permits in Greater Houston and The Woodlands covenant rules cover the details. Whatever your city, the quote should say whether a permit is included and who is responsible for it.

Are there rebates, tax credits or financing for a new AC?

CenterPoint Energy offers incentives on qualifying high-efficiency installations through participating contractors, the federal 25C tax credit has ended, and financing is the main remaining way to spread the cost.

• CenterPoint Energy incentives: CenterPoint's residential heating and cooling program pays incentives through participating contractors, and CenterPoint says the amount may increase depending on your installation. Eligibility depends on the equipment, so ask your contractor which models qualify and whether they participate. Our CenterPoint rebates guide has the current program details.
• Federal tax credit: The Section 25C energy efficient home improvement credit does not apply to property placed in service after December 31, 2025, so a 2026 AC replacement does not qualify. See HVAC tax credits in 2026.
• Financing: Financing is available through FTL Finance, subject to credit approval.

What makes AC replacement quotes hard to compare?

AC quotes are hard to compare when they describe different jobs under the same name, so the lowest total is not always the lowest price for the same work. The most common gaps:

• Different scope. One quote replaces the outdoor unit and the coil; another also replaces the furnace or air handler. Both are "a new AC."
• A mismatched system. A new outdoor unit paired with an old indoor coil may never deliver its rated efficiency and may not work with a different refrigerant. Look for an AHRI-certified matched combination.
• Sizing by guesswork. A quote with no load calculation may simply copy the old tonnage. That can mean paying for capacity that makes humidity worse.
• Missing line items. Line set, electrical, pad, drain work, permit and disposal can be left out of a low quote and added later.
• Vague equipment. "14 SEER2 Goodman system" without model numbers makes it impossible to confirm efficiency, refrigerant or warranty coverage.
• Unclear warranty terms. Manufacturer parts coverage and installer labor coverage are separate. Ask what each covers, for how long, and whether the equipment must be registered.

What should a written AC replacement quote include?

A complete written AC quote names the exact equipment and lists every part of the job separately, so you can see what you are paying for and line it up against other offers. Ask for these items:

1. Equipment model numbers for the outdoor unit, the indoor coil and, if included, the furnace or air handler, plus the AHRI reference number for the matched combination so you can check it in the AHRI Directory.
2. Size and efficiency: tonnage and the certified SEER2 rating of the matched system, and the refrigerant it uses.
3. How the size was chosen: whether a Manual J load calculation was done.
4. Labor for the installation, including attic work.
5. Removal and disposal of the old equipment, including refrigerant recovery.
6. Permit: whether one is included where your city requires it.
7. Refrigerant line set: reused or replaced, and why.
8. Pad or stand for the outdoor unit.
9. Electrical: disconnect, breaker and any wiring changes.
10. Thermostat: included or not, and whether it is matched to the system.
11. Ductwork changes: sealing, repairs or replacement, described specifically.
12. Warranty terms: manufacturer parts coverage, installer labor coverage, and any registration requirement.

To compare quotes apples-to-apples, put them side by side on those twelve lines. Where one quote includes an item and another does not, ask the second contractor to price it. Compare like-for-like efficiency and compressor type before comparing totals. When the scopes match, the price difference is real; when they do not, it is a difference in the job.

What should you do next?

Start with a firm, itemized quote based on a look at your home, then compare any other quotes against the checklist above. If you are not sure whether to replace yet, run your numbers through our repair-or-replace framework first.

JHC Cooling & Heating installs and services Goodman air conditioners across Greater Houston. You can request a quote on AC installation & replacement or call (832) 447-3233.

Frequently Asked Questions

Why won't this guide give a price for AC replacement?

An installed AC price depends on your home's load calculation, the equipment tier and the installation work, none of which a website can see. A published number can anchor you to the wrong expectation. A written, itemized quote after an on-site look is the only reliable figure.

What is the biggest factor in the cost of a new AC?

System size, efficiency tier and compressor type set the equipment price, and they are usually the largest part of a quote. The scope of the indoor work is the next big swing: replacing the furnace or air handler at the same time, or replacing ductwork, can raise the total sharply.

Does a higher SEER2 rating always cost more?

Higher-SEER2 equipment usually raises the equipment price, and it can lower operating costs over time. New split-system ACs in Texas must meet at least 14.3 SEER2 below 45,000 Btu/h and 13.8 SEER2 above it. Whether a higher tier pays off depends on how long you plan to stay and how much you run the system.

Can I replace only the outdoor AC unit to save money?

Usually not on an older system. Pairing a new outdoor unit with an old indoor coil can create a mismatched system that misses its rated efficiency and may not be compatible with a newer refrigerant. Ask for an AHRI-certified matched combination.

Do I need a permit to replace my AC in Houston?

The Houston Permitting Center requires a mechanical permit for HVAC alterations, including condensing-unit replacement, and several surrounding cities have similar rules. This is general guidance; confirm with your local building department and make sure your quote says whether the permit is included.

Is there a federal tax credit for a new AC in 2026?

No. The Section 25C credit does not apply to property placed in service after December 31, 2025. CenterPoint Energy incentives may still apply to qualifying equipment through participating contractors, and financing is available through FTL Finance, subject to credit approval.

Sources

1. U.S. DOE — 2023 Central Air Conditioner and Heat Pump Standards FAQ (October 5, 2022) — Southeast regional SEER2 minimums for split-system AC (as of October 2026)
2. eCFR — 10 CFR 430.32, energy conservation standards — 14.3 SEER2 below 45,000 Btu/h and 13.8 SEER2 at or above, Southeast (as of October 2026)
3. ACCA — Manual J Residential Load Calculation — the standard for sizing residential HVAC equipment (as of October 2026)
4. AHRI Directory of Certified Product Performance — lookup for certified matched indoor/outdoor combinations (as of October 2026)
5. Federal Register 2023-28500 — EPA Technology Transitions interim final rule (December 26, 2023) — transition of new residential split systems to lower-GWP refrigerants (as of October 2026)
6. Federal Register 2026-10387 — EPA Technology Transitions final rule (May 26, 2026) — removal of the R-410A installation deadline for qualifying equipment (as of October 2026)
7. ACHR News, coverage of legal challenges to the 2026 rule — litigation pending on the R-410A rule (as of October 2026)
8. ACHR News, the A2L refrigerant era and UL 60335-2-40 — refrigerant detection requirements for some A2L systems (as of October 2026)
9. Goodman, residential split-system air conditioners — current residential split systems use R-32 (as of October 2026)
10. Houston Permitting Center, mechanical permits — permit for HVAC alterations including condensing-unit replacement (as of October 2026)
11. City of Sugar Land, Permits Homeowner Brochure, and FY25 Fee Ordinance — permit for HVAC repair, replacement or addition; fee doubled if work starts first (as of October 2026)
12. City of Katy, Permits & Building — permit required for AC and heating installation (as of October 2026)
13. City of Pearland, Permits & Development Fees — residential mechanical permits (as of October 2026)
14. City of Missouri City, Mechanical Permit Application — mechanical permits (as of October 2026)
15. City of Pasadena, Residential Building Application — mechanical section permits (as of October 2026)
16. City of Jersey Village, Building Safety and Permits — mechanical permits (as of October 2026)
17. City of Humble, Fee Schedule effective October 1, 2024 — building permits administered by the Chief Building Official (as of October 2026)
18. 16 Tex. Admin. Code §75.100 (Cornell LII) — state code standard for areas without a local permit program (as of October 2026)
19. The Woodlands Township, 2024 Residential Development Standards (recorded December 10, 2024), §2.2, pp. 32–33 — compressor rules and pre-approved same-location replacement (as of October 2026)
20. CenterPoint Energy — Heating and Cooling incentives — incentives through participating contractors; amount may increase depending on the installation (as of October 2026)
21. IRS — FAQs for modification of sections 25C, 25D and others under Public Law 119-21 (FS-2025-05) — Section 25C not allowed for property placed in service after December 31, 2025 (as of October 2026)
22. FTL Finance — Who We Are — HVAC financing provider (as of October 2026)