Mini-Split R-454B Recharge Kit — 24 oz Disposable One-Step Can with Gauge, Hose & 5/16″-to-1/4″ Service Port Adapter
This is the R-454B recharge kit built specifically for ductless mini splits. It combines a 24 oz (680 g) disposable one-step can of Forane® 454B (R-454B) with a built-in gauge, a charging hose, and critically a 5/16″-to-1/4″ service port adapter. Every ductless mini split, regardless of manufacturer, uses a 5/16″ service port rather than the 1/4″ port found on ducted systems, so the included adapter is what makes this kit the right choice for mini-split service. If you work on ducted equipment instead, the standard 1/4″ R-454B can with gauge and hose is the better fit.
Why Mini Splits Need the 5/16″ Adapter
Ductless mini splits use a 5/16″ SAE service port on the service ports, while most cans, hoses, and manifold sets terminate in a 1/4″ fitting. Without the correct adapter you simply cannot connect to the port. This kit removes that problem...the 5/16″-to-1/4″ adapter is included, so a technician can recharge a mini split on the first trip.
It's sized for practical field service: topping off a ductless system after a leak repair or line-set correction, or finishing a charge. Because R-454B has a very low temperature glide (about 1.1 K), it can be added as vapor and tops off cleanly, and the 24 oz can covers many typical single-zone adjustments.
Ideal for: Ductless mini split heat pumps and air conditioners that use R-454B refrigerant and a 5/16″ service port.
Working on ducted equipment? A central system with a 1/4″ port doesn't need the adapter—use the 1/4″ R-454B can with gauge and hose.
Charging guidelines are general references only. Actual requirements depend on system size, line-set length, ambient conditions, and the amount of refrigerant lost. R-454B is an A2L refrigerant for use by qualified HVAC/R professionals. Request mini-split sizing help, contact Budget Heating, or call 813-885-7999.
What's Included
| Refrigerant | R-454B (Forane® 454B) — A2L, replaces R-410A |
|---|---|
| Net Weight | 24 oz (680 g) |
| Included Gauge | Built-in pressure gauge for one-step charging |
| Included Hose | Charging hose with 1/4″ SAE connection |
| Included Adapter | 5/16″-to-1/4″ mini-split service port adapter |
| Best For | Ductless mini splits (all brands use a 5/16″ port) |
| Cylinder | DOT-39 disposable, 1/4″ SAE self-sealing valve |
| Purity | Meets AHRI 700 • Made in USA |
Everything needed to recharge a ductless system arrives in one package—refrigerant, gauge, hose, and the 5/16″ adapter so there's no scrambling for a fitting at the job site.
Refrigerant & Mini-Split Kit Features
Forane® 454B (R-454B) Refrigerant
- Next-generation A2L, low-GWP refrigerant
- Direct replacement for R-410A in new equipment
- GWP of 466 roughly 78% lower than R-410A
- Blend of R-32 and R-1234yf (68.9% / 31.1%)
- Very low temperature glide (~1.1 K) for clean top-offs
- High-purity refrigerant meeting AHRI 700
- Made in USA
Mini-Split Recharge Kit
- Includes the required 5/16″-to-1/4″ port adapter
- Built-in gauge for fast, single-hand charging
- Charging hose with 1/4″ SAE fitting
- Fits the 5/16″ service port used by every mini-split brand
- Standard clockwise can connection, no left-thread adapter needed
- DOT-39 disposable cylinder with self-sealing valve
- Compact 24 oz size for the service truck
Specifications & Manuals
The R-454B Refrigerant & Charging Guide covers refrigerant specifications, the difference between the available can options, step-by-step charging, and A2L handling notes to assist qualified technicians with safe, correct service.
Frequently Asked Questions
Why does a mini split need a 5/16″ adapter?
Ductless mini splits use a 5/16″ SAE service port on the service ports, while cans and hoses typically end in a 1/4″ fitting. The included 5/16″-to-1/4″ adapter bridges that difference so you can connect and charge. Simply connect the female end of the adapter to the units low side and your included gauge/hose to the male side of the adapter.
Do all mini split brands really use the same 5/16″ port?
Yes. Regardless of manufacturer, ductless mini splits use a 5/16″ service port, which is why this kit includes the 5/16″ adapter as standard equipment.
What's the difference between this kit and the 1/4″ version?
This kit adds the 5/16in -to-1/4in adapter for ductless equipment. The 1/4″ can with gauge and hose has no adapter and is meant for ducted split systems with a 1/4″ port.
Can I use this kit on a ducted central system too?
Yes—connect the hose directly to a 1/4″ port and set the adapter aside. The adapter is only needed for the 5/16″ port found on mini splits.
Does the can require a left-thread A2L adapter?
No. The can threads on with a standard clockwise 1/4″ SAE connection. A left-thread-to-right-thread A2L adapter is only for larger refillable cylinders like 20 lb jugs, not these disposable cans.
Where can I find R-454B mini split systems?
Shop Budget Heating's selection of ductless mini split heat pumps, including R-454B models, for full system replacements.
R-454B Refrigerant & Charging Guide
