The natural refrigerant for chillers, cold-chain, and EV thermal.
HCR 4343A is the broadest-spectrum Eco Kold blend, engineered for commercial chillers, refrigerated transport, cold-chain logistics, and electric-vehicle thermal-management systems. The only blend in the line rated for transport and EV applications. Drop-in for R-134A with 65% less charge, 44% lower system pressure, and a GWP of <1.
HCR 4343A · 2.5kg cylinder
A natural refrigerant for the systems that run all day.
Chillers, transport refrigeration, and EV thermal systems run constantly. The pressure and charge advantages of HCR 4343A compound over a system's life: less compressor strain, less leak risk, less energy draw.
The systems most of the field is already running on.
Water-cooled · process cooling · district
Chillers cycle 24/7. HCR 4343A delivers the same cooling capacity at 56% lower pressure, extending compressor and seal life while cutting energy use 30–50%.
Refrigerated trucks · reefers · pharma logistics
The only Eco Kold blend rated for transport applications. HCR 4343A holds set-point under vibration and thermal cycling better than R-134A, with no GWP exposure on a road accident.
Battery + cabin cooling on electric vehicles
Modern EVs use R-134A in their thermal-management loops. HCR 4343A is the natural replacement: same loop hardware, a GWP of <1, and lower power draw means longer range.
Different refrigerant? Different blend.
HCR 4343A covers chillers, cold-chain, and EV thermal: anything on R-134A. The other four Eco Kold blends cover low-temp refrigeration, AC, legacy R-22 systems, and plain R-134.
Specifications & safety classification.
For engineers, contractors, and procurement. Full pressure-temperature data and Safety Data Sheet linked at the bottom.
Operating envelope
| Composition | Hydrocarbon blend (propane/isobutane base) |
|---|---|
| Operating pressure | 45 PSI · suction side |
| Discharge pressure | ~170 PSI · vs. R-134A's ~220 PSI |
| Exit temperature | 4–6 °C at chiller duty point |
| Critical temperature | 96.7 °C |
| Oil compatibility | POE · PAG · mineral oil |
Environmental & safety
| GWP | <1 |
|---|---|
| ODP | 0 |
| Safety class | A3 · flammable · standard HC handling |
| EPA SNAP | Submitted: under review · not yet listed |
| Charge limit | Per IEC 60335-2-89, IEC 60079-15, transport-specific code |
| UN number | UN 1965 (LPG, hydrocarbon mix) |
Three steps. Same equipment. One certified technician.
Retrofit-ready: minimal to no equipment changes. The retrofit takes a weekend on a typical commercial site. Hydrocarbon refrigerant (ASHRAE A3, flammable); install by a qualified technician.
Recover the legacy refrigerant.
Pull the R-134A charge through a certified recovery machine into an approved reclaim cylinder. Never vent. EPA-licensed technicians only.
Pull a deep vacuum.
Evacuate the system to 500 microns or lower. Hold the vacuum to verify no leaks. This step is identical to a standard refrigerant change-out.
Charge with 62% less HCR 4343A.
Weigh in 380 g of HCR 4343A for every 1,000 g of R-134A removed. Verify suction pressure at ~45 PSI. Document the charge on the system label.
Specs, safety, and install instructions.
Everything a technician, engineer, or procurement team needs to evaluate HCR 4343A. All PDFs, no email gate.
Common questions about HCR 4343A.
What does HCR 4343A replace?
HCR 4343A is the drop-in hydrocarbon refrigerant replacement for R-134 and R-134A in commercial chillers, transport refrigeration, cold-chain shipping containers, and electric-vehicle thermal-management loops. The lowest absolute-pressure curve in the Eco Kold line, matching the low-pressure systems R-134 was designed for.
What is the GWP of HCR 4343A?
HCR 4343A has a Global Warming Potential of <1. R-134A carries a GWP of 1,430, and has been a primary target of the EU F-gas Regulation and the AIM Act phase-down in the U.S.; HCR 4343A is the GWP <1 replacement path.
Is HCR 4343A EPA SNAP listed for chiller and transport refrigeration?
HCR 4343A has been submitted to the EPA SNAP program and is under review; it is not yet listed. The blend is A3 classified and complies with IEC 60335-2-89 charge limits for hydrocarbon refrigerants.
Can HCR 4343A be used in EV thermal-management systems?
Yes. HCR 4343A is engineered for the duty points of early-generation EV battery cooling loops that ran R-134A. For specific EV applications, verify oil compatibility (PAG oils are common in EV systems) with the vehicle manufacturer. Engineering will provide a system-specific assessment.
What oil is compatible with HCR 4343A in chiller applications?
HCR 4343A is compatible with mineral oil, POE (polyolester), and alkylbenzene oils: the standard chiller oils. For systems originally specified with PAG oil (more common in transport and automotive applications), confirm compatibility through the equipment manufacturer.
Chillers, transport, or EV cooling on R-134A?
Send us the system type and current charge. We'll match the right HCR 4343A quantity, quote pricing, and connect you with a certified installer for the application: chillers, transport, or EV.