HFC Phase-Down: The Yearly Quota on Refrigerant Imports

The commitment is a ceiling on quantity, and it applies to a country. Singapore agreed to reduce national consumption of these gases along a published timetable that NEA sets out as steps, each expressed as a share of a fixed baseline.

NEA's circular to licence holders, dated 3 November 2023, states every step: consumption stays frozen at 100% of the baseline from 2024 through 2028, falls to 90% from 2029, then 70% from 2035, 50% from 2040, and 20% from 2045. That last figure is the floor, and it sits above zero.

Consumption in that schedule is a defined quantity, unrelated to how hard a household runs its aircon. NEA writes it as production plus imports minus exports of the controlled gases, and Singapore manufactures almost none of them. The term therefore describes what crosses the border, which puts control in the hands of the companies bringing gas in.

The baseline behind every percentage was calculated once, in carbon-dioxide-equivalent terms: average HFC consumption across 2020 to 2022, plus 65% of the earlier HCFC baseline. A percentage quoted without that denominator settles very little, so ask what 70% is 70% of before treating the figure as informative.

NEA turned the schedule into a quota on 1 January 2024. Any company importing or exporting the 18 controlled HFCs now carries a mandatory annual quota, and blends and mixtures count. It is written onto its hazardous substances licence each December for the year ahead.

The administration runs on a published calendar. Requests for additional quota are submitted between 1 and 30 June, and requests to shift quota between controlled gases go in during April or October, subject to approval. Unused quota expires at year end.

One instruction explains what a household meets at the trade counter. NEA tells licence holders not to stockpile beyond what is needed. It may also adjust an allocation where a forecast departs sharply from past use. The pool is sized against forecast demand and checked against history.

None of that produces a notice addressed to an owner. The quota binds the importer; importers supply wholesalers, who supply trade counters, and the cylinder carried up to a ledge is filled from the end of that chain. A household meets the schedule as availability and price on the day gas is bought.

The schedule does not reach equipment already in a flat. The quota binds licence holders at the border. NEA's 2021 circular on high-warming refrigerants repeats that point for the supply restriction it introduced. Equipment already installed is not affected.

The current gas sits inside the budget as well, which catches people out. HFC-32, sold as R32, appears on the list of 18 controlled substances, and R-410A among the controlled blends. Neither has been carved out, and both are counted at their own weight.

Treat the phase-down as grounds for replacing a system that still works and you have been sold something. The schedule names no model, no brand and no household duty, only an annual national quantity and the companies obliged to stay inside it. A machine that still cools carries no deadline out of any of this.

Ask a seller which rule they mean. A quota on imports, a ceiling on what may be supplied new, and an efficiency requirement are three different things.

They have different start dates, and sales talk blurs them, usually toward urgency.

The exposure lands on one day: the one where a circuit has to be filled again. Gas already inside a working system stays outside all of it, because a sealed circuit draws on no allocation.

A refill is a purchase, and that purchase comes out of the quota'd pool. The cost of getting a leak wrong climbs with every step in the schedule. Paying for gas that leaves through the same hole was always poor value. It gets worse as the allocation tightens.

Push back on a top-up offered before the leak has been located. A charge that disappears twice was never a charge problem. Ask what was done to look for it, and what the search turned up, because the leak detection methods available produce specific answers rather than opinions. A full recharge into a circuit nobody proved tight buys the same afternoon twice.

For a system running R-410A, the gas is controlled and counted, and it carries more weight per kilogram than R32. Whether that surfaces as price or waiting time at any moment is not published anywhere, and no schedule can be read to produce it. The r32 vs r410a comparison has its own page.

Those steps are published and dated.

What the schedule does not decide is which unit appears on a shop floor. Manufacturers choose the refrigerant they engineer around, and choose it for a world market, while local instruments filter what may be supplied here. The model range in front of a shopper is the output of all that, several steps removed from a percentage.

Names circulating in equipment overseas include R290 and R454B. Which reaches Singapore household splits, and when, is not something this schedule settles, and anyone offering a firm forecast is selling confidence they have not earned.

The plannable part is narrow: the direction is downward and dated, the next step lands in 2029, and the instruments arrive separately, each with its own commencement date. Below the level of the national total, the supply side is not forecastable one gas at a time.

• •Establish what your own system holds before any of this matters to you. The designation is printed on the plate, not in the manual.
• •Treat a quoted phase-down date as checkable. NEA publishes the schedule, and the steps fall in 2029, 2035, 2040 and 2045.
• •Separate the instruments before agreeing with a sales argument. The gas ceiling, the efficiency floor and the labelling duty began on different dates.
• •Judge the joints and the workmanship instead. Gas that never escapes never has to be bought back out of a tightening allocation.
• •Dismiss any argument that a working system must go because of a supply schedule. Nothing in it places a duty on an owner.