The drop-in retrofit for R-410A air conditioning.
HCR 4141 is the AC workhorse of the Eco Kold line: a natural hydrocarbon blend engineered to match the pressure curve, temperature glide, and oil compatibility of R-410A. Recover, vacuum, charge with 65% less product, and the system runs cooler, quieter, and on up to 50% less power. Not for retrofit of split-system air conditioners or heat pumps, which US EPA lists as unacceptable for hydrocarbon refrigerants.
HCR 4141 · 2.5kg cylinder
Same equipment. Same thermostat. A different climate footprint.
Side-by-side numbers for the exact same air-conditioning duty point. The GWP gap is the headline. The pressure and charge differences are why your equipment runs longer.
Built for the systems most of the world is already running on.
R-410A is the most-installed AC refrigerant of the last two decades. HCR 4141 is engineered as the cleanest path off it: retrofit-ready with minimal to no equipment changes, no retraining for the technician, no compromise on cooling. Hydrocarbon refrigerant (ASHRAE A3, flammable); install by a qualified technician.
Rooftop units · VRF · light commercial
Drop-in for commercial packaged and VRF systems running R-410A or R-32. Not for split-system retrofits. Tested across hospitals, retail, hospitality, and industrial-office applications.
Aging R-410A systems facing repair vs. replace
An R-410A system that needs a recharge is the perfect HCR 4141 candidate. Instead of buying time on a phase-down refrigerant, retrofit once and run on GWP <1 for the system's remaining life.
Different refrigerant? Different blend.
HCR 4141 covers R-410A and R-32 AC. The other four Eco Kold blends cover everything else in the field, from −30 °C cold-storage to commercial chillers.
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 | 75–80 PSI · suction side |
| Discharge pressure | ~240 PSI · vs. R-410A's ~400 PSI |
| Exit temperature | 8–10 °C at AC duty point |
| Critical temperature | 96.7 °C |
| Oil compatibility | Mineral oil · POE · alkylbenzene |
Environmental & safety
| GWP | <1 |
|---|---|
| ODP | 0 |
| Safety class | A3 · flammable · standard HC handling |
| EPA SNAP | Submitted: pending a final ruling |
| Charge limit | Per IEC 60335-2-89 and local code |
| UN number | UN 1965 (LPG, hydrocarbon mix) |
Three steps. Same equipment. One certified technician.
No specialty hardware. Retrofit-ready: minimal to no equipment changes. Hydrocarbon refrigerant (ASHRAE A3, flammable); install by a qualified technician. The retrofit takes a weekend on a typical commercial site.
Recover the legacy refrigerant.
Pull the R-410A 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 65% less HCR 4141.
Weigh in 350 g of HCR 4141 for every 1,000 g of R-410A removed. Verify suction pressure at 75–80 PSI. Document the charge on the system label.
Specs, safety, and install instructions.
Everything a technician, engineer, or procurement team needs to evaluate HCR 4141. All PDFs, no email gate.
Common questions about HCR 4141.
What does HCR 4141 replace?
HCR 4141 is a hydrocarbon refrigerant blend for air-conditioning systems running R-410A or R-32. It matches R-410A’s pressure curve. The biggest install base in the Eco Kold line. Not for retrofit of split-system air conditioners or heat pumps, which US EPA lists as unacceptable for hydrocarbon refrigerants.
What is the GWP of HCR 4141?
HCR 4141 has a Global Warming Potential of <1. R-410A carries a GWP of 2,088; R-32, the so-called "low-GWP" HFC that R-410A is being replaced with in newer equipment, carries a GWP of 675. More on the GWP math.
Is HCR 4141 EPA SNAP listed for air-conditioning systems?
HCR 4141 has been submitted to the EPA SNAP program and is pending a final ruling; it is not yet listed. It is designed for the low-GWP transition; approved end-uses and availability vary by country.
Can HCR 4141 go into an existing split-system AC or heat pump?
No. US EPA’s SNAP program lists all ASHRAE Class 3 flammable refrigerants, hydrocarbon blends included, as unacceptable for retrofit of unitary split air-conditioning systems and heat pumps, effective January 3, 2017.
What is the typical energy savings on an HCR 4141 retrofit?
HCR 4141 retrofits typically deliver up to 50% reduction in cooling-cycle energy consumption. The reduction comes from a 65% lighter charge moving the same heat at lower system pressure (~78 PSI vs R-410A’s ~110 PSI suction). Per-site projections are included with every quote.
Ready to swap an R-410A system to HCR 4141?
Send us the equipment make, model, and current charge weight. We'll quote pricing, lead time, and connect you with a certified installer in your region, usually within one business day.