When Is R-134a Phased Out? The Kigali Amendment Timeline and Replacement Plan for Thailand

The most common customer question about R-134a is "When will it be banned, and what do I switch to?" The answer isn't a firm "banned on date X" — it's a gradual phase-down that pushes prices up until replacing becomes cheaper than repairing.

This article explains the real timeline under the Kigali Amendment, Thailand's HFC quota reduction schedule, and the right replacement for each application.

1. Why R-134a Is Not Like R-22 or R-12

Many people assume R-134a "depletes ozone" — it doesn't. The distinction matters:

R-12 and R-22 contain chlorine → deplete ozone → banned under the original Montreal Protocol. R-134a has no chlorine → ODP = 0 → not in the original phase-out — but it has a high GWP (warming) → so it was pulled under the Kigali Amendment added to the Montreal Protocol in 2016.

In short: R-134a is not "banned" like R-22 — it is "quota-reduced" until it gets steadily more expensive.

2. Kigali Amendment — Phase-Down, Not Phase-Out

The Kigali Amendment (2016) aims to cut global HFC consumption by 80-85% by 2047, avoiding roughly 0.4°C of warming. Key points:

• It is a reduction of the total (consumption cap) for the HFC group, not a ban on any single refrigerant
• Developed countries reduce first (from 2019); developing countries follow later
• In practice: high-GWP refrigerants (e.g. R-404A GWP 3,922, R-134a GWP 1,430) get squeezed out of the market first, because they consume a lot of the CO2-equivalent quota

3. Thailand's HFC Reduction Schedule (Article 5 Group 1)

Thailand ratified the Kigali Amendment and is in developing-country Article 5 Group 1. The schedule:

timeline
    title Thailand HFC Phase-down (Article 5 Group 1)
    2024 : Freeze consumption (against 2020-2022 baseline)
    2029 : Reduce -10%
    2035 : Reduce -30%
    2040 : Reduce -50%
    2045 : Reduce -80%

• The Department of Industrial Works (DIW) administers HFC import quotas under the Hazardous Substance Act
• As the total quota falls, importers allocate less to high-GWP refrigerants → R-134a prices keep rising
• Year-to-year quota figures change — verify with DIW/importers before ordering a large lot

Note: the years and percentages above are the international Kigali framework for the A5 Group 1; the detailed enforcement in Thailand follows DIW notices that are updated periodically.

4. Pressure From Europe — EU F-Gas + MAC Directive

Although Thailand follows the slower Kigali schedule, export markets and vehicle makers are squeezed far faster by the EU:

• MAC Directive (2006/40/EC): banned refrigerants above GWP 150 in new passenger-car AC from 2017 → R-134a (GWP 1,430) out, R-1234yf (GWP 4) in
• EU F-Gas Regulation (2024/573): accelerates HFC phase-down more aggressively than Kigali for the EU market

Impact on Thailand: new vehicles built on global/EU-export platforms already ship with R-1234yf → workshops and service centers must carry both refrigerants + tools during the transition.

5. R-134a Replacements — Choose by Application

Read the deeper HFO replacement guide at HFO Refrigerants R-449A vs R-454B vs R-513A and the direct automotive comparison at R-134a vs R-1234yf.

6. Transition Plan for Factories/Fleets (Practical)

flowchart TD
    A[Have R-134a equipment] --> B{How old is the unit?}
    B -->|New/mid-life| C[Keep topping up R-134a + stock spare]
    B -->|Near end-of-life| D[Replace unit + choose low-GWP]
    A --> E{Buying new equipment now?}
    E -->|Yes| F[Pick R-513A/R-1234ze/R-744 from the start]
    C --> G[Track R-134a price + DIW quota]
    G -->|Price spikes| D

Principles:

1. Don't scrap a healthy unit early — retrofit or top up until economical
2. New equipment = pick low-GWP now so you aren't locked to a rising-price refrigerant
3. Stock enough R-134a for repairs during the transition (beware counterfeits — demand AHRI 700 + license)
4. Track the DIW quota — the price signal is your decision accelerator

Summary Table

Frequently Asked Questions

Q: Can I still buy R-134a in Thailand now?

A: Yes — R-134a is still legal and available, but under the HFC import quota (administered by DIW) that shrinks per the Kigali schedule. As a result, prices trend upward. Every lot should carry AHRI 700 + a license to guard against counterfeit/contaminated product.

Q: Can I just put R-1234yf in an old R-134a car?

A: Not recommended to swap freely — R-1234yf is A2L (mildly flammable) and requires dedicated tools, fittings, and oil. A vehicle designed for R-134a should be topped up with R-134a or retrofitted only per the manufacturer's guidance.

Q: How does R-513A differ from R-134a in practice?

A: R-513A is a blend (R-134a + R-1234yf) designed to behave very much like R-134a: very low glide (~0°C), non-flammable (A1), same POE oil → a low-impact drop-in/retrofit, but with GWP reduced from 1,430 to 573.

Q: What is GWP, and why does it matter for TOR work?

A: GWP (Global Warming Potential) tells you how much 1 kg of a refrigerant warms the planet relative to CO2. Government/green-building projects (LEED, TREES) are starting to cap GWP in specs. Choosing low-GWP from the start helps pass the criteria and avoids replacing twice.

Request a Quote

Sahawatthanakit supplies the full transition range — R-134a plus replacements R-513A / R-1234yf / R-1234ze / R-744 — AHRI 700 (2019) certified with full hazardous-substance licensing, and we help plan the transition to fit your budget and timeline.

• Phone: 02-096-2118
• LINE: @406rrgvm
• Email: info@sahawatthanakit1988.com
• Request a quote: /quote?service=refrigerant