The refrigerant phase-down, and what it means for existing plant

How the mechanism works

The phase-down is a quota on supply, expressed in CO2 equivalent rather than in tonnes of refrigerant. Producers and importers are allocated a share of a total that reduces in steps over time.

Because the quota is denominated in CO2e, it bites hardest on high-GWP refrigerants. A supplier can place far more tonnage of a low-GWP refrigerant on the market within the same quota allocation than of a high-GWP one. The market therefore shifts toward lower-GWP products by economics rather than by prohibition.

Alongside the quota there are specific placing-on-the-market restrictions for certain equipment types and refrigerant classes, which arrive on defined dates. Those get the attention; the quota is what actually shapes the market.

What operators actually experience

1. Price. The cost of high-GWP refrigerant rises, sometimes sharply and sometimes unpredictably, as quota steps take effect. A top-up that was a minor line item becomes a significant one.
2. Lead times. What was available from stock becomes a wait.
3. Reclaimed rather than virgin refrigerant becomes the norm for some products. Reclaimed refrigerant is legitimate and usable, and supply is less predictable.
4. Repair economics turn. A leak on a system using a scarce refrigerant becomes hard to justify repairing, because recharging is expensive and may not be repeatable next time.
5. Asset life shortens economically without changing mechanically. The plant would run for another eight years; the refrigerant position means it will not be worth doing so.
6. Valuation and due diligence. Commercial property with substantial plant on obsolescent refrigerant is a point raised in transactions.

Planning for it

The useful response is planning rather than reaction, and it starts with knowing what you have.

1. Build the asset registerEvery system, with refrigerant type, charge, age and condition. Without this you cannot plan anything.
2. Identify plant on high-GWP refrigerantThese are your exposure.
3. Assess each on economic rather than mechanical lifeA mechanically sound system on an obsolescent refrigerant has a shorter useful life than its condition suggests.
4. Prioritise by riskSystems that are critical to operations, systems with a history of leaks, and systems with a large charge are the ones to deal with first.
5. Budget accordinglyReplacement on a planned schedule is substantially cheaper than emergency replacement after a leak.
6. Treat a significant leak as a decision pointOn obsolescent refrigerant, a major leak is frequently the moment to replace rather than recharge.
7. Consider the compliance benefit of replacingModern low-GWP plant may fall below a CO2e threshold, reducing or removing your leak checking obligation – a real and often unconsidered saving.

What not to do

• Do not stockpile refrigerant without understanding the quota and handling rules. Placing refrigerant on the market and holding it are regulated activities, and it is not a straightforward hedge.
• Do not assume a drop-in replacement exists. Some retrofit refrigerants exist for specific systems and they are limited, product-specific, and frequently involve oil changes and performance penalties. There is no general substitution.
• Do not keep topping up a leaking system. It is not permitted, it is expensive, and on a scarce refrigerant it is increasingly impractical anyway.
• Do not wait for a prohibition date. The commercial effects arrive years earlier, and by the time a date is imminent everybody is trying to replace plant at once.
• Do not replace like for like without checking the refrigerant. Some equipment still available uses refrigerants that will be awkward within the new plant’s life.
• Do not assume low-GWP means no obligations. Handling, certification and recovery requirements apply regardless of GWP.

Choosing replacement plant

The compliance point deserves emphasis. If replacing a high-GWP system with a lower-GWP one moves it below a leak checking threshold, you remove a recurring statutory obligation and its associated cost for the life of the new plant. That belongs in the business case and it is very frequently left out.

Where to check the current position

We deliberately do not publish specific dates, quota steps or threshold figures on this page. They are set in regulation, they have changed, and a figure copied from an article written three years ago is exactly how people make a bad decision.

The authoritative sources:

• gov.uk guidance on fluorinated gases, which sets out the current requirements and restrictions for Great Britain.
• The Environment Agency, as the enforcing authority in England.
• Equipment and refrigerant manufacturers, for product-specific transition plans.
• Your certified contractor, who should be tracking this as a matter of course.

And a note on scope: arrangements for Great Britain and Northern Ireland have diverged in some respects since the UK left the EU. If you operate across both, check the position for each rather than assuming they are the same.