Should You Repair or Replace Your AC? Here Is How We Decide

Repair your AC if it is under 10 years old, a single component has failed, and the repair costs less than a third of the cost of a new system. Replace it if the compressor failed out of warranty, the evaporator coil is leaking refrigerant, or the system still runs R-22. In the Houston Bay Area, salt air and a nearly year-round cooling season push most systems into replacement territory between years 10 and 15.

Every August our phones light up with the same question. The AC quit, someone quoted a repair, and the homeowner wants to know if they are sinking money into a system that will die anyway. The answer differs for a nine-year-old unit in Friendswood and a sixteen-year-old off Clear Lake. In our 50 years of experience, it comes down to age, what broke, which refrigerant it uses, and what the salt has done to it.

How Do You Know Whether to Repair or Replace Your AC?

The Age Test

ENERGY STAR advises considering replacement for a central air conditioner or heat pump more than 10 years old. That fits well here. The reason is run hours. NOAA’s 1991 to 2020 climate normals put Houston at 3,288 cooling degree days a year with 111.3 days at or above 90 degrees. A cooling degree day measures how much and how long outdoor air is warm enough to require cooling. For units 8 years and under, we lean toward repair. Past 12, we quote both.

The Repair Cost Test

Some contractors multiply the unit’s age by the repair cost and replace it if the product exceeds $5,000. That ignores what failed. A better rule: if a repair costs more than a third of a new system’s cost and the unit is over 10 years old, put the money toward replacement.

Repair or Replace Your AC: How the Numbers Break Down in the Bay Area

Your Situation	What We Find on Site	Recommendation
8 to 12 years, first real failure, charge holds	Aging but sound	Repair, start budgeting
Refrigerant low, leak in the evaporator coil	Coil corrosion or pitting	Price both, coil quotes often near replacement
Compressor failure, parts warranty expired	Shorted to ground or locked rotor	Replace
Coil corroded through, home near the water	Salt exposure damage	Replace

Why Bay Area Air Conditioners Wear Out Before the Brochure Says

What Salt Air Does to a Condenser Coil

On calls in Seabrook, Kemah, and neighborhoods around Clear Lake, we pull panels on units that look fine from the street and find aluminum fins powdering away at the coil base. Salt-laden air flows from inside the fin pack outward, where homeowners cannot see it. Refrigerant absorbs heat inside your home and releases it outside. Adding more to a leaking coil buys time, not a fix. When we find pitting across a coil face, we say so instead of selling a recharge every summer.

The Humidity Load Nobody Accounts For

Much of the work your AC does here is pulling water out of the air, not lowering the temperature. That latent load keeps compressors running longer per cycle than in a dry climate. An oversized system makes it worse: it cools fast, shuts off early, and leaves the house damp at 74 degrees. That is why a Manual J load calculation, the industry method for sizing cooling capacity to a house’s square footage, insulation, windows, and orientation, comes before any replacement quote.

An After-Hours AC Save in the Bay Area, Done Right

Jennifer Morris called after hours on a hot evening with the AC down and two kids who needed to sleep. She assumed the answer was a new system and braced for the cost.

Our technician, Matthew, went out that night and completed the diagnosis before providing a quote. He found the problem was repairable and walked Jennifer through the readings as he went, so she could follow the reasoning rather than take it on faith.

In her words:

Matthew was so helpful and was able to save our AC without having to replace it yet. He came out after hours and got us back up and running so the kids could sleep cool tonight. He was very knowledgeable and took the time to explain everything as he was going. He broke down our options very well so we could make the best decision for our family.

The system ran again that night, and the family slept cool. Jennifer also left knowing where her equipment stood on its service life, the right position for any homeowner: a working AC today and a real timeline for the next decision. Read Jennifer’s full Google review.

What Refrigerant Type Means for Your Decision in 2026

Under the American Innovation and Manufacturing Act, the EPA restricts new residential air conditioning systems to refrigerants with a global warming potential of less than 700, effective January 1, 2025. Global warming potential, or GWP, is a number comparing how much heat a refrigerant traps relative to carbon dioxide. New equipment ships with R-454B or R-32.

If Your System Runs R-410A

Your system is not illegal or unserviceable. EPA states that components used to repair existing systems are exempt from these restrictions, and consumers may keep using equipment until the end of its useful life. What is changing is supply: HFC production is capped at 60 percent of baseline levels for 2024 through 2028, and recharge prices have risen. A unit needing a large charge every season belongs on the replacement side.

If Your System Runs R-22

New R-22 is no longer produced or imported in the United States, and per EPA, only recycled, reclaimed, or previously produced supply may be used for repairs. No federal rule requires you to replace an R-22 system, and we will not pretend otherwise. But a leaking R-22 unit in 2026 is expensive to keep running, and that money usually belongs to a new high-efficiency system.

What We Check Before Recommending Either One

A real diagnosis is not a glance at the data plate. We test the run capacitor, the component that gives the compressor and fan motor the jolt they need to start and keep turning, because a weak one can mimic compressor failure. We read superheat and subcooling, the pressure and temperature measurements that reveal if the charge is correct. We measure temperature split, the difference between the air entering the indoor coil and the air leaving it. If refrigerant is low, we find the leak electronically instead of topping off and driving off.

Where DIY Ends

Change filters, keep two feet of clearance around the condenser, rinse the outdoor coil on low pressure, and clear the condensate drain. Anything touching refrigerant requires EPA Section 608 certification under federal law. Opening an energized air handler is how people get hurt. Texas also requires that a licensed air conditioning and refrigeration contractor be verified through the Texas Department of Licensing and Regulation.

Permits, Efficiency Rules, and Rebates Around Houston

The City of Houston requires a permit for the installation, repair, or replacement of a condensing unit, as well as an inspection. Contractors must register their license with the city to obtain one. Bay Area cities run their own permit offices, so confirm your address.

The Department of Energy sets 14.3 SEER2 as the minimum for split-system central air conditioners under 45,000 Btu per hour in the Southeast region, which includes Texas. SEER2 is the current federal cooling efficiency rating, measured under conditions that reflect real duct static pressure. Lower-rated equipment cannot legally be installed here.

CenterPoint Energy offers residential efficiency incentives in its Houston electric territory. Texas law bars the utility from dealing directly with homeowners, so the rebate reaches you through a participating contractor and lands on your invoice.

Why Bay Area Homeowners Call Vanderford

We have worked in the Houston Bay Area since 1976 and are still family-owned, now in the second generation. That matters on a repair-or-replace call because no one here is paid to sell you a system you do not need.

Our technicians are certified, and we back the job with published guarantees, not verbal promises. Our 24-hour emergency service incurs no overtime fees on nights or weekends.

When replacement really is the answer, we size the system to the house and offer financing so this week’s checking balance does not dictate the choice.

If your AC is down now, book AC repair and get eyes on it, or contact us and we will tell you what to do.

FAQs

Is my AC worth fixing if it is 12 years old?

A 12-year-old air conditioner is worth fixing if the failed part is a single component, such as a capacitor, contactor, or fan motor, and the system still holds its refrigerant charge. It is usually not worth repairing if the compressor has failed or the evaporator coil is leaking, because those repairs often cost half as much as a new system. ENERGY STAR advises considering replacement for cooling equipment more than 10 years old, and in the Houston Bay Area the run hours and salt exposure make that guidance realistic rather than conservative. Have a technician confirm the diagnosis with refrigerant and electrical readings first, then compare the repair quote side by side with a full replacement quote.

Do I have to replace my AC because of the R-410A refrigerant rules?

No. The EPA restrictions that took effect January 1, 2025 apply to newly manufactured residential systems, not to equipment already installed in homes. EPA states that components used to repair existing systems are not subject to the restrictions and that consumers may continue using their equipment until the end of its useful life. What has changed is cost, because United States HFC production is capped at 60 percent of baseline levels through 2028 and R-410A recharges have grown more expensive as a result. If your system loses refrigerant every season, that rising cost is a legitimate factor in a replacement decision, though the rule itself does not force your hand.

How long should an air conditioner last in the Houston Bay Area?

Most residential systems in this market reach the end of practical service life between 10 and 15 years, and homes closest to Galveston Bay tend to land at the lower end. The two drivers are run hours and salt exposure: NOAA’s 1991 to 2020 climate normals show Houston averaging 3,288 cooling degree days and 111.3 days at or above 90 degrees each year, and coastal air corrodes outdoor coils and cabinets faster than inland air does. Systems that get annual professional maintenance, including coil cleaning and drain clearing, reliably outlast neglected ones. Correct sizing and good duct airflow at installation stretch the life further still.

Do I need a permit to replace an air conditioner in Houston?

Yes. The City of Houston requires a permit for the installation, repair, or replacement of a condensing unit, and an inspection is required as part of that process. Only contractors who have registered their license with the city may pull the permit, which is one good reason to confirm licensing before you hire anyone. Bay Area cities including League City, Friendswood, and Pasadena operate their own permit offices with their own requirements, so verify the rules for your specific address. A contractor who offers to skip the permit is telling you something useful about how they work.

What does a new AC system cost, and can I finance it?

Vanderford Air and Plumbing quotes roughly $5,000 to $10,000 for a full HVAC system replacement, with $7,000 as a typical figure, though the actual cost depends on tonnage, efficiency level, and whether duct or electrical work is needed. Federal rules require at least 14.3 SEER2 for split-system air conditioners under 45,000 Btu per hour in Texas, so there is a floor on how cheap a compliant new system can be. CenterPoint Energy incentives for higher-efficiency equipment are applied through participating contractors and can reduce what you pay. Several financing options, including soft-credit-check lenders and lease-purchase programs, are available if you would rather spread the cost out.

Key Takeaways

• ENERGY STAR advises homeowners to consider replacing a central air conditioner or heat pump that is more than 10 years old, and notes that high-efficiency ENERGY STAR certified equipment can save up to 20 percent on heating and cooling costs.
• NOAA’s 1991 to 2020 climate normals record 3,288 annual cooling degree days and 111.3 days at or above 90 degrees for Houston, which is why local systems accumulate run hours faster than national lifespan averages assume.
• EPA restricts new residential air conditioning systems to refrigerants with a global warming potential below 700 as of January 1, 2025, but components used to repair existing systems are exempt from those restrictions.
• The AIM Act caps United States HFC production and consumption at 60 percent of baseline levels for 2024 through 2028, which is the mechanism driving R-410A price increases.
• New R-22 is no longer produced or imported in the United States, and per EPA, only recycled, reclaimed, or previously produced supply may be used to service existing R-22 systems.
• The Department of Energy requires a minimum of 14.3 SEER2 for split-system central air conditioners under 45,000 Btu per hour in the Southeast region, which includes Texas. Noncompliant equipment cannot be installed in the region.
• The City of Houston requires a permit and an inspection for the installation, repair, or replacement of a condensing unit, and contractors must register their licenses with the city to obtain a permit.
• Handling refrigerants requires EPA Section 608 certification, and Texas requires that work be performed by a licensed air conditioning and refrigeration contractor, as verified through the Texas Department of Licensing and Regulation license search.

Citations and References

1. ENERGY STAR, “When is it time to replace?” https://www.energystar.gov/saveathome/heating-cooling/replace
2. U.S. Environmental Protection Agency, “Technology Transitions HFC Restrictions by Sector.” https://www.epa.gov/hfcs/technology-transitions-hfc-restrictions-sector
3. U.S. Environmental Protection Agency, “Frequent Questions on the Phasedown of Hydrofluorocarbons.” https://www.epa.gov/hfcs/frequent-questions-phasedown-hydrofluorocarbons
4. U.S. Environmental Protection Agency, “Purchasing and Repairing Home Air Conditioners or Heat Pumps.” https://www.epa.gov/ods-phaseout/purchasing-and-repairing-home-air-conditioners-or-heat-pumps
5. U.S. Department of Energy, “Central Air Conditioner Regional Standards Guidance,” June 2022. https://www.energy.gov/sites/default/files/2022-06/cac_regional_guidance6-08-2022.pdf
6. NOAA National Centers for Environmental Information, Local Climatological Data Annual Summary, Houston Intercontinental Airport, 1991 to 2020 normals. https://www.ncei.noaa.gov/pub/access/cebrequests/2023lcdannual/01202313IAH.pdf
7. City of Houston Permitting Center, “Condensing Unit (Commercial/Residential).” https://www.houstonpermittingcenter.org/hpwcode1022
8. CenterPoint Energy, “Residential Electric Efficiency Programs.” https://www.centerpointenergy.com/en-us/residential/save-energy-money/electric-efficiency-programs/residential-electric-efficiency?sa=ho
9. Texas Department of Licensing and Regulation, Air Conditioning and Refrigeration license search. https://www.tdlr.texas.gov/LicenseSearch/?program=ACR