R454B (HFO blend) Disposal: GWP, Phase-Down, Certified Handler Requirements
Last updated: 30 April 2026
R454B (HFO blend) disposal: complete guide
Reviewed by the eCycling Central editorial team on April 2026
R454B (HFO blend) has a Global Warming Potential (GWP) of 466, ozone depletion potential of none, and is classified as A2L mildly flammable. It is typically used in modern AC replacing R410A from 2024.
Why R454B (HFO blend) disposal is regulated
A refrigerant's GWP is the single most important factor in how strictly its disposal is regulated. R454B (HFO blend) releases the same warming impact per kilogram as 466 kg of CO2 when vented to atmosphere.
The phase-down regulatory status: Allowed under EU F-Gas and US AIM Act.
Where R454B (HFO blend) is found
R454B (HFO blend) is the standard refrigerant for modern AC replacing R410A from 2024. If you have an appliance manufactured during this period and the data plate shows R454B, this guide applies.
How to legally dispose of equipment containing R454B (HFO blend)
The refrigerant must be recovered (captured into a sealed cylinder) before the equipment is broken down. This requires a person holding an F-Gas Category I certificate (EU, UK), Section 608 certification (US EPA), or country-equivalent.
The route for typical owners:
- Do not attempt to remove or vent the refrigerant yourself - this is illegal and dangerous (the A2L mildly flammable classification means the gas may be flammable or asphyxiating)
- Use one of: manufacturer take-back programme, retailer take-back when buying replacement, local-authority bulky-waste collection, or commercial F-Gas certified disposal contractor
- Keep the receipt or recovery certificate if available - useful for end-of-life evidence in commercial contexts
Penalty for venting R454B (HFO blend)
- EU: up to €100,000 per violation under F-Gas Regulation 517/2014, plus member-state criminal penalties
- UK: up to £200,000 fine (Environmental Protection Act) plus prosecution by the Environment Agency
- US: up to $25,000 per day per violation under EPA Section 608
Sources
- IPCC Sixth Assessment Report (AR6) - GWP coefficients
- EU F-Gas Regulation 517/2014, Annex I
- UK F-Gas Regulations 2015 (SI 2015/310)
- US AIM Act 2020 and EPA SNAP database
- ASHRAE Refrigerant Designation and Safety Classification (Standard 34)
Frequently Asked Questions
Is R454B (HFO blend) banned?
Allowed under EU F-Gas and US AIM Act. Service of existing equipment may continue under conditions, but new equipment containing R454B (HFO blend) faces tightening restrictions in the EU and US.
What is the GWP of R454B (HFO blend)?
466 (per IPCC AR6). This means 1 kg vented has the same warming effect as 466 kg of CO2 over a 100-year period.
Can I vent a small amount of R454B (HFO blend) myself?
No. Venting any quantity of R454B (HFO blend) to atmosphere is a regulatory offence in the EU, UK, US, and most developed-economy jurisdictions. R454B (HFO blend) must be recovered by a certified handler.