1234yf Freon Machines
May 27, 2025
May 27, 2025
How 1234yf Freon Machines Work, Detect Leaks, and Why This Refrigerant Costs More

If you've recently had your car in for A/C service and noticed that the refrigerant used is called 1234yf, you’re not alone. This newer type of freon is becoming the industry standard—but it also comes with higher costs and stricter regulations. In this post, we'll break down how 1234yf machines work, how they detect leaks, why the refrigerant is more expensive, and what you need to know about warranty limitations.
What Is 1234yf Freon?
1234yf (technically known as HFO-1234yf) is the latest refrigerant used in many modern vehicles, replacing the older R-134a. Why the change? Environmental impact. R-134a has a high Global Warming Potential (GWP) of 1,430. In contrast, 1234yf has a GWP of just 4—a huge step forward in reducing greenhouse gas emissions.
How Do 1234yf Machines Work?
The machines used to service 1234yf systems are far more advanced than older R-134a models. Here's what they do:
Recover: The machine safely recovers the refrigerant from the system.
Recycle: It filters out contaminants like moisture and oil.
Recharge: It accurately injects the correct amount of 1234yf back into the system based on manufacturer specifications.
These machines are fully automated, ensuring precision with minimal technician input. That precision matters—because overcharging or undercharging can cause poor A/C performance or even damage components.
Leak Detection in 1234yf Systems
One of the biggest challenges with A/C repair is finding leaks. 1234yf machines often include integrated leak detection systems that use:
Vacuum Decay Tests: The system is placed under vacuum and monitored for pressure loss.
Electronic Leak Detectors: These “sniffers” detect escaping refrigerant by sensing its chemical signature.
UV Dye: Safe, manufacturer-approved dye is sometimes added to help locate hard-to-spot leaks under a UV light.
While modern leak detection tools are highly accurate, no system is 100% foolproof. Leaks can be intermittent, microscopic, or located in hard-to-reach spots. That’s why leak detection is both a science and an art—and why continued monitoring may be required after repairs.
Why Is 1234yf So Expensive?
You may have noticed: 1234yf is significantly more expensive than R-134a—often 3 to 5 times the cost. Here’s why:
Production Complexity: It’s more expensive to manufacture.
Licensing and Patents: Fewer companies produce it, keeping prices high.
Special Equipment: Shops must invest in costly 1234yf-specific machines, which gets factored into service pricing.
Environmental Compliance: It meets strict EPA and global climate regulations, which also increases overall cost.
EPA Regulations and Environmental Benefits
As of 2021, the EPA requires all new vehicles to use low-GWP refrigerants like 1234yf. This is part of a larger push to reduce greenhouse gases under the Clean Air Act. In addition:
Technicians must be EPA 609 certified to handle refrigerants.
Recovery and recycling are legally mandated—you can’t just “top off” a leaking system anymore.
Proper disposal and leak repair are required to prevent environmental damage.
Important: No Warranty on Freon
At our shop, and most others, there is no warranty on freon. Why?
If your A/C system has a small, undetectable leak, the refrigerant can escape again even after recharge.
Freon is a consumable, not a mechanical part.
EPA regulations prohibit “topping off” unless the leak has been fixed—so if it leaks again, it’s back to square one.
We stand by our workmanship, but refrigerant itself is never guaranteed due to its sensitive nature and the risk of future leakage.
In Conclusion
1234yf systems are cleaner and more efficient—but they require precision handling and come with added costs. At Superior Transmissions and Auto, we’re equipped with the latest certified machines and leak detection technology to keep your A/C running cold and clean. While freon isn’t covered under warranty, our expert diagnostics and repairs are done to the highest standards—so you can drive away cool and confident.
Got questions about your vehicle’s A/C system? Give us a call or stop by for a consultation.


July 15, 2025
What’s Really Going On If you own a Ford Focus—especially a model from 2012 to 2018—you’ve probably heard the words “transmission issue” more times than you’d like. The heart of most complaints? The DTC, or Dual-Clutch Transmission. At Superior Transmissions & Auto, we see these often and know exactly what makes them tick—and what makes them fail. What is a DTC Transmission, Anyway? DTC stands for Dual-Clutch Transmission. Think of it as a hybrid between a manual and an automatic transmission. It has two clutches—one for odd gears and one for even gears—allowing for faster, smoother gear shifts (in theory). It’s designed for fuel efficiency and performance, but in real-world driving, it often feels anything but smooth. Unlike a traditional automatic that uses a torque converter, the DTC in the Ford Focus behaves more like a computer-controlled manual transmission. It can feel jerky at low speeds, hesitate when shifting, or seem like it’s slipping—especially in stop-and-go traffic. Why the Ford Focus DTC is So Problematic The biggest issues with these transmissions usually boil down to the clutch system and internal actuators. In many cases, the vehicle will: Shudder on acceleration Struggle to find or hold a gear Flash the "Transmission Hot" warning Show DTC codes (diagnostic trouble codes) for clutch actuator failure or internal gear ratio errors Ford has acknowledged many of these problems through service bulletins and extended warranties—but even those come with limits. How We Handle Ford DTC Transmissions At Superior Transmissions & Auto, we don’t just throw parts at these issues. We diagnose them thoroughly to pinpoint exactly what’s going on. Often, the root cause is worn or contaminated clutch packs, failed shift actuators, or broken internal components in the TCM (Transmission Control Module). Here’s how we handle DTC repairs: 1. Complete Diagnostic Scan We start with a full scan of the transmission’s computer to identify stored trouble codes. This gives us insight into clutch position, actuator performance, and gear engagement. 2. Clutch Replacement The most common repair is replacing the dual-clutch assembly. These clutches wear prematurely, especially in traffic-heavy areas. We use upgraded parts and take the time to properly recalibrate everything during reinstallation. 3. Actuator & TCM Checks We test the transmission’s shift actuators and often recommend replacement if there are engagement issues or hesitation. In some cases, the TCM may also need programming or replacement. 4. Adaptive Relearn & Road Testing Once the repair is complete, we perform an adaptive relearn procedure and extensive road testing to ensure the transmission shifts correctly under all driving conditions. A Different Drive—And a Different Kind of Fix Driving a DTC-equipped Focus isn’t like driving a standard automatic—and that’s part of the confusion for many drivers. It’s normal for the car to feel a little “clunky” at low speeds. But grinding, slipping, or delayed shifts? Those are not normal. If you’re dealing with a misbehaving Focus transmission, don’t just live with it. And don’t let someone tell you “it’s just how they drive.” We’ve rebuilt countless DTCs, replaced dozens of clutches, and know these systems inside and out. Bring It to the Experts Not every shop will work on DTCs—some won’t touch them at all. At Superior Transmissions & Auto, we specialize in them. Whether you need a diagnostic, a clutch replacement, or a complete rebuild, we’ve got the tools, training, and experience to get your Focus back on the road—the right way. �55357;�56525; Located in New Windsor, NY �55357;�56507; Schedule your appointment right on our website! �55357;�56615; Trust the shop that knows transmissions inside and out. Superior Transmissions & Auto Bringing transparency—and performance—back to auto repair.

July 15, 2025
Why That Matters for Your Car At Superior Transmissions & Auto, we’re proud to say we’re the only shop in the area that rebuilds Continuously Variable Transmissions (CVTs) — and that’s not just a cool brag. It speaks volumes about our experience, our commitment to our craft, and the level of trust you can place in us when your vehicle needs serious work. What Even Is a CVT? A CVT (Continuously Variable Transmission) is not your average transmission. Unlike traditional automatic or manual transmissions, which have a fixed number of gears, a CVT doesn’t have gears at all. Instead, it uses a system of pulleys and a steel belt to provide a seamless range of gear ratios. This allows for smoother acceleration, improved fuel efficiency, and a more consistent driving experience. Sounds great, right? It is — until something goes wrong. Why Most Shops Don’t Touch CVTs Here’s the thing: CVTs are a completely different animal than standard automatics. Rebuilding one isn’t just a matter of replacing worn-out clutches or seals. You need specialized tools, diagnostic software, and, most importantly, in-depth knowledge of how each specific CVT design works — and they vary a lot between manufacturers like Nissan, Subaru, Honda, and Toyota. Most general repair shops — even ones that dabble in transmissions — will tell you flat-out: “We don’t rebuild CVTs.” Why? Complex internals: CVTs rely on precise hydraulic and electronic controls. One wrong move and it’s toast. Lack of training: Most techs aren’t trained in CVT rebuild procedures, especially since many manufacturers don’t even sell internal parts. Special equipment required: You can’t rebuild a CVT with just a socket set and a transmission jack. The tools alone are a barrier. OEM discouragement: A lot of manufacturers push for full replacement instead of repair — leading shops to avoid the risk and effort of a rebuild. Why Superior Can and Does Rebuild CVTs At Superior Transmissions & Auto, we lean into the challenge. We’ve invested in the training, equipment, and expertise to properly rebuild CVTs — and we’ve been doing it successfully. We don’t shy away from complexity — we thrive in it. When other shops say, “It can’t be rebuilt,” we say, “It just hasn’t been rebuilt here yet.” We’ve rebuilt CVTs that other shops wrote off as scrap. In fact, we’ve had customers towed to us after being told their only option was a brand new transmission or a used junkyard transmission — and we were able to save them thousands by rebuilding instead. Ultimately giving them back a better product. The Bottom Line: CVT Trouble? You Found the Right Shop If your car has a CVT and it’s slipping, shaking, or just not moving, you need someone who knows what they’re doing. We’re not just another shop that “does transmissions.” We are transmission specialists — and more importantly, we’re CVT specialists, which is something you won’t find anywhere else around here. We’re here to do the work that others won’t — and we do it right. Give us a call or schedule an appointment online. If it’s got a CVT, we’ve got you covered.