ENHANCING ENVIRONMENTAL AND
PERFORMANCE STANDARDS:

1) BACKGROUND

Envisys Technologies Pvt. Ltd., a leader in environmental test chambers in India, has consistently demonstrated a commitment to innovation and sustainability. With global regulatory shifts and rising environmental consciousness, the refrigerant industry is undergoing a major transformation. Traditionally, many Envisys systems have used R404A, a high-performance but high-GWP (Global Warming Potential) refrigerant.

In 2025, recognizing the need for a more sustainable and future-proof solution, Envisys announced a complete transition from R404A to the next-generation R449A refrigerant across all upcoming product lines.

2) PROBLEM STATEMENT

The use of R404A, though effective in thermal performance, comes with serious environmental drawbacks:

  • Extremely high GWP (3922), making it a major contributor to global warming.
  • Increasing regulatory pressure globally to phase out high-GWP refrigerants.
  • Limited long-term compliance with emerging international sustainability standards like F-Gas
    Regulations and Kigali Amendment to the Montreal Protocol.

These constraints created an urgent need for an eco-friendlier, energy-efficient, and regulation-compliant
alternative.

 

 

3) THE SHIFT: WHY R449A?

Refrigerant R404A R449A
Composition R143a / R125 / R134a
(%44 / %52 / %4)		 R32 / R125 / R134a / R1234yf
(%24 / %25 / %26 / %25)
ODP 0 0
GWP 3922 1282
Critical temperature (°C) 345.2 357
Critical pressure (kPa) 3728.85 4662
Boiling point (°C) 226.7 227.2
Liquid density (kg/m3) at 0°C 1150.59 1198
Vapor density (kg/m3) at 0°C 30.32 22.43
Liquid Cp (kJ/kg·°C) at 0°C 1.39 1.417
Vapor Cp (kJ/kg·°C) at 0°C 1 0.976
Liquid heat transmission coefficient (W/m·°C) at 0°C 73.15 91.83
Vapor heat transmission coefficient (W/m·°C) at 0°C 12.82 12.03
Liquid viscosity (Pa·s) at 0°C 179.7 190.5
Vapor viscosity (Pa·s) at 0°C 11 11.29
Safety classification A1 A1

 

Envisys chose R449A as the strategic replacement for R404A due to its:

  • Lower GWP (1397) ~65% reduction compared to R404A.
  • Zero Ozone Depletion Potential (ODP).
  • Drop-in compatibility for many existing systems, minimizing redesign costs.
  • Improved energy efficiency and cooling performance, verified by third-party studies.

This shift is not just a technical upgrade – it reflects Envisys’ long-term environmental responsibility and
compliance strategy.

 

 

 

4) EXPECTED OUTCOMES

4.1) EnvironmentalImpact

  • Reduction of overall carbon footprint from refrigerant use.
  • Full alignment with India’s and global climate action goals.
  • Improved corporate image and sustainability scores.

4.2) Operational Efficiency

  • Higher cooling capacity and performance under various operating conditions.
  • Reduced power consumption – beneficial in long-run testing applications.
  • Lessrefrigerant massflow required – lower operational load.

4.3) Compliance & Future Readiness

  • Prepares Envisys productsforfuture regulatory landscapes.
  • Compatibility with upcoming standards across U.S., EU, and other export markets.
  • Enhances confidence among international clients, especially in aerospace, automotive, and
    electronicsindustries.

Conclusion:

Metric R404A R449A Benefit of R449A
Global Warming Potential (GWP) 3922 1397 ~65% lower
Cooling Effect Baseline +23% higher Improved output
Energy Efficiency (COP) Baseline +5% higher Lower energy use
Life Cycle Climate Performance Baseline ~5% lower Greener systems
Exergy Efficiency Lower +5% higher Less energy loss

The adoption of R449A marks a significant step in Envisys Technologies’ journey toward sustainability
without compromising performance. Backed by scientific validation and real-world applicability, thistransition
enhances Envisys’ value proposition as a forward-looking manufacturer delivering reliable, green, and globally
compliant environmental testing solutions.

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