If your AC has acted up this summer, you've probably heard your tech mention a string of numbers and letters — R-22, R-410A, R-454B — and watched the price of the repair swing wildly depending on which one your system uses. In Houston, where your air conditioner runs eight or nine months a year, the refrigerant inside your system isn't just trivia. It's one of the biggest factors in deciding whether to repair or replace. Here's the plain-English breakdown from someone who has been turning wrenches on these systems for years.
R-22 (Freon): The Expensive Ghost of HVAC Past
R-22, sold for decades under the brand name Freon, was the standard refrigerant in residential AC until the EPA phased out its production and import on January 1, 2020. It wasn't banned from existing systems — your 2008 unit can legally keep running on it — but no new R-22 is being manufactured in the U.S. anymore. Everything left is recycled or stockpiled, and that scarcity shows up on your invoice.
Recharging an R-22 system now runs $75 to $150 per pound, and a typical 3-ton Houston system holds 6 to 10 pounds. Do the math: a refrigerant leak repair can easily top $1,000 before labor. That's the bad news.
The good news is that not every R-22 repair is expensive. The refrigerant circuit is sealed — if it isn't leaking, you never touch it. The parts that actually fail most often on aging systems are electrical, and those are cheap and universal:
- Capacitors — the single most common AC failure in Texas heat. A $20 part. Browse capacitors here.
- Contactors — the relay that switches your compressor on. Another inexpensive, brand-agnostic fix. See contactors.
- Control boards and fan motors — pricier, but still standard parts. Check control boards and fan motors.
So the rule with an R-22 system is simple: electrical repairs, yes; refrigerant repairs, think hard. If your old unit just needs a capacitor, replace it and run another season. If it's leaking refrigerant, you're often better off putting that money toward a new system.
R-410A (Puron): The Current Workhorse
If your system was installed between roughly 2010 and 2024, it almost certainly runs on R-410A, often sold as Puron. R-410A became the residential standard after R-22 was scheduled for retirement, and it's what the overwhelming majority of Houston homes have humming away in the backyard right now.
Here's what matters for you: R-410A systems are fully supported. Refrigerant is readily available and reasonably priced, every supply house in town stocks it, and the OEM parts — compressors, coils, boards, motors — are everywhere. If you have R-410A, you have nothing to worry about for the foreseeable future. Repairs are normal repairs.
There is one wrinkle on the horizon. Under the AIM Act, the EPA is phasing down (not abruptly out) the production of R-410A because of its high global-warming potential. Manufacturing volumes are being stepped down through the late 2020s and into the 2030s. This is a slow squeeze, not a cliff — think of where R-22 was around 2012, not 2020. You'll have parts and refrigerant for your R-410A system for many years. But over the next decade, expect R-410A refrigerant prices to slowly climb the same way R-22's did.
R-454B (Opteon XL41): The New Standard
As of January 1, 2025, new residential equipment is being built around low-GWP refrigerants, and the front-runner for most major brands is R-454B, sold as Opteon XL41. If you buy a brand-new AC or heat pump in 2026, this is very likely what's inside it.
R-454B is more efficient and far gentler on the environment, which is genuinely good. The catch for homeowners is that it's new. The aftermarket parts ecosystem — third-party compressors, universal components, generic replacement boards — hasn't caught up yet. Right now, repairs on R-454B systems mostly mean OEM parts through dealer channels, and the supply chain is still maturing. It's also a mildly flammable (A2L) refrigerant, so it requires updated handling procedures and equipment that not every shop has fully adopted. None of this should scare you off a new system; it just means the cheap-universal-parts convenience you enjoy with R-410A will take a couple of years to develop for R-454B.
The Decision Framework for Older Systems
If you're a Houston homeowner staring down a repair bill on an aging unit, here's how I'd think about it:
- R-22 system, electrical failure (capacitor, contactor, board, motor): Fix it. It's cheap, and there's no reason to scrap a system over a $20 part.
- R-22 system, refrigerant leak: Get a replacement quote. Paying $1,000+ to recharge a 15-year-old system is usually throwing good money after bad, especially given our cooling season's brutal runtime.
- R-410A system, any failure: Repair with confidence. Parts and refrigerant are abundant and affordable.
- Buying new in 2026: Expect R-454B. Buy from a brand with strong local dealer support so parts are never a problem, and keep that warranty paperwork handy.
One more tip: don't guess at what you have. Your refrigerant type and manufacture date are stamped on the outdoor unit's nameplate. You can decode it instantly with our serial number lookup, and if your system is throwing a fault, our error code lookup and diagnostic tool will tell you what's actually wrong before a contractor does.
Get the Right Part the First Time
Whether you're nursing an R-22 unit through one more Texas summer or keeping a modern R-410A system in top shape, most repairs come down to a handful of common, affordable parts. Find exactly what fits your equipment using our model compatibility hub, then shop OEM-quality capacitors, contactors, igniters, and fan motors shipped fast from right here in Houston. Diagnose smart, buy the right part once, and keep your home cool — start with our free diagnostic tool.