Honeywell Solstice® 454B Refrigerant (R-454B)

Genuine Honeywell Solstice® 454B (R-454B) — The Low-GWP Drop-In Successor to R-410A Tulstar Products supplies genuine, virgin Honeywell Solstice® 454B (R-454B) refrigerant for HVAC/R contractors, distributors, and OEMs transitioning off R-410A. R-454B is the refrigerant most major residential and light-commercial equipment manufacturers have standardized on for 2025-and-newer systems, giving you a reliable, widely-supported path for new installs and warranty work. With over 35 years distributing refrigerants, industrial chemicals, and specialty gases, Tulstar ships from our Tulsa, OK facility with full EPA Section 608 compliance verification on every order. Why R-454B? Closest match to R-410A performance — R-454B was engineered as a near drop-in replacement for R-410A in new equipment, matching capacity and efficiency closely enough that OEMs can convert designs with minimal re-engineering. Significantly lower GWP — R-454B carries a GWP of approximately 466, a 78% reduction versus R-410A's GWP of ~2,088. Broad operating envelope — Higher critical temperature and a wider range in low evaporating temperatures mean R-454B performs well across both normal and high-ambient climates. Zero ozone depletion potential (ODP) — Like other HFO/HFC blends, R-454B does not contribute to ozone layer depletion. Industry momentum — R-454B is the refrigerant of choice going into most new residential and light-commercial AC and heat pump systems shipping today, so demand for it is not a passing trend. Important: Zeotropic Blend Unlike single-component refrigerants (such as R-32), R-454B is a zeotropic blend. That means composition can shift slightly between vapor and liquid phases during a leak or improper charging. Always charge as a liquid per manufacturer guidelines to maintain the correct blend ratio. Classification & Handling R-454B is classified as an A2L refrigerant (mildly flammable, lower toxicity) under ASHRAE Standard 34. This requires technicians to follow A2L-specific handling, recovery, and installation practices, and POE oil is the recommended lubricant for R-454B systems. All purchasers must provide valid EPA Section 608 certification prior to fulfillment, per federal handling requirements. Specifications Attribute Detail Brand Honeywell Solstice® 454B Refrigerant blend classification Zeotropic HFO/HFC blend ASHRAE safety classification A2L (mildly flammable, lower toxicity) ODP 0 GWP ~466 (78% lower than R-410A) Recommended lubricant POE (polyol ester) oil Ozone Depleting Substance No EPA 608 certification required Yes Available packaging (per Honeywell) Disposable 20 lb jugs; returnable 100 lb cylinders; half-ton and one-ton tanks; iso-tanks/bulk trailers for large orders Confirm which packaging size(s) your Tulsa warehouse stock is actually in before publishing — see notes below. Applications New residential and light-commercial split systems and heat pumps Comfort air cooling and reversible heating equipment R-410A system conversions/redesigns by OEMs Warranty and service work on 2025-and-newer equipment Ordering & Compliance All R-454B orders require submission of valid EPA Section 608 Universal or Type II/III certification prior to release. Our team verifies certification before your order is handed to fulfillment — a process built to keep your purchase compliant and your delivery on schedule. For bulk or contract pricing, contact our sales team directly.