F gas leak check frequency: Fgas Duties and Thresholds
The Fgas Duties and Thresholds carries 5 published figures read from 2 sources' own pages, from 3 to 12 month, read 31 October 2026.
2 of the 9 named sources read in full publish a figure; 7 publish none, read 31 October 2026.
By duty
| Breakdown | Median | Range | Sources |
|---|---|---|---|
| dutyleak-detection-system-check | 6month | 6 to 6month | 1 |
| dutyhermetic-exemption | 0.1% | 0.1 to 0.1% | 1 |
| dutyleak-check-under-50t | 12month | 12 to 12month | 1 |
| dutyleak-check-50-500t | 6month | 6 to 6month | 1 |
| dutyleak-check-500t-plus | 3month | 3 to 3month | 1 |
| dutyrecord-retention | 5year | 5 to 5year | 2 |
| dutyleak-check-5-50t | 12month | 12 to 12month | 1 |
Every figure, with its source
One row per published figure: the figure as the source's own page publishes it, the page, and the day it was read. A figure that is not on a page we read is not on this one.
| Source | Figure | Breakdown | Read |
|---|---|---|---|
| Regulation (EU) 2024/573 on fluorinated greenhouse gases | 12month | leak-check-under-50t | 2026-10-24 |
| NetRegs: stationary refrigeration, air conditioning and heat pumps F-gas controls | 12month | leak-check-5-50t | 2026-10-31 |
| NetRegs: stationary refrigeration, air conditioning and heat pumps F-gas controls | 6month | leak-detection-system-check | 2026-10-31 |
| Regulation (EU) 2024/573 on fluorinated greenhouse gases | 6month | leak-check-50-500t | 2026-10-24 |
| Regulation (EU) 2024/573 on fluorinated greenhouse gases | 5year | record-retention | 2026-10-24 |
| NetRegs: stationary refrigeration, air conditioning and heat pumps F-gas controls | 5year | record-retention | 2026-10-31 |
| Regulation (EU) 2024/573 on fluorinated greenhouse gases | 3month | leak-check-500t-plus | 2026-10-24 |
| Regulation (EU) 2024/573 on fluorinated greenhouse gases | 0.1% | hermetic-exemption | 2026-10-24 |
The sentence each figure was read from (8)
- Regulation (EU) 2024/573 on fluorinated greenhouse gases, read 2026-10-24:
for equipment that contains less than 50 tonnes of CO2 equivalent of fluorinated greenhouse gases listed in Annex I or less than 10 kilograms of fluorinated greenhouse gases listed in Section 1 of Annex II: at least every 12 months; or where a leakage detection system is installed in such equipment, at least every 24 months;
- NetRegs: stationary refrigeration, air conditioning and heat pumps F-gas controls, read 2026-10-31:
Check leaks regularly - Leak checks must be conducted by certified personnel at intervals determined by the systems F-gas charge in CO2 equivalent (CO2e): Leak testing frequencies Equipment charge (CO2 e) Leak check frequency With leak detection system <5 tonnes N/A N/A 5 to <50 tonnes 12 months 24 months 50 – 500 tonnes 6 months 12 months > 500 tonnes 3 months 6 months
- NetRegs: stationary refrigeration, air conditioning and heat pumps F-gas controls, read 2026-10-31:
You must fit a leak detection system to equipment with a contained charge >500 tonnes of CO2e. This system must be checked every 6 months.
- Regulation (EU) 2024/573 on fluorinated greenhouse gases, read 2026-10-24:
for equipment that contains 50 tonnes of CO2 equivalent or more, but less than 500 tonnes of CO2 equivalent of fluorinated greenhouse gases listed in Annex I or 10 kilograms or more, but less than 100 kilograms of fluorinated greenhouse gases listed in Section 1 of Annex II: at least every 6 months or, where a leakage detection system is installed in such equipment, at least every 12 months;
- Regulation (EU) 2024/573 on fluorinated greenhouse gases, read 2026-10-24:
For the purpose of Article 11(7), the undertakings which sell non-hermetically sealed equipment charged with fluorinated greenhouse gases listed in Annex I and in Section 1 of Annex II shall keep records of the equipment sold and of the certified undertakings that will carry out the installation. The undertakings selling the equipment referred to in Article 11(7) shall keep the records for a perio
- NetRegs: stationary refrigeration, air conditioning and heat pumps F-gas controls, read 2026-10-31:
Records must be kept for at least 5 years.
- Regulation (EU) 2024/573 on fluorinated greenhouse gases, read 2026-10-24:
for equipment that contains 500 tonnes of CO2 equivalent or more of fluorinated greenhouse gases listed in Annex I or 100 kilograms or more of fluorinated greenhouse gases listed in Section 1 of Annex II: at least every 3 months or, where a leakage detection system is installed in such equipment, at least every 6 months.
- Regulation (EU) 2024/573 on fluorinated greenhouse gases, read 2026-10-24:
it has a tested leakage rate of less than 0,1 % per year as set out in the technical specification of the manufacturer and is labelled accordingly;
Read in full, publishes no figure
7 named sources were read in full on the dates shown and print no usable figure. They are counted, never filled in.
- GOV.UK: checking F gas equipment for leaks, read 2026-10-26: every candidate on the page was refused
- GOV.UK: record F gas in equipment you own or service, read 2026-10-03: read in full and no accepted figure on the page
- GOV.UK: calculate the carbon dioxide equivalent quantity of an F gas, read 2026-10-03: read in full and no accepted figure on the page
- The Fluorinated Greenhouse Gases Regulations 2015, read 2026-10-10: read in full and no accepted figure on the page
- Assimilated Regulation (EU) No 517/2014 on fluorinated greenhouse gases, read 2026-09-12: read in full and no accepted figure on the page
- GOV.UK: F gas in refrigeration, air conditioning and fire protection systems, read 2026-09-12: read in full and no accepted figure on the page
- European Commission: F-gas legislation, read 2026-09-26: every candidate on the page was refused
Methodology
Every row is a verbatim sentence read from the named source's own page through our fetch service on the date shown, hash-pinned to the stored read (the sha of the page's visible text; the raw page is mirrored to R2).
2 of the 9 named sources that could be read published a usable figure; 7 published none and are recorded as not published, never filled in; 0 could not be read (blocked, dead or unreachable) and count nowhere.
The headline figures (median, minimum, maximum, quartiles) are over ONE figure per source for each breakdown it prices, in month (a source's median where its page yielded several accepted sentences for one breakdown), so a page that gives figures for several breakdowns gives one for each and N counts 5 figures, never sentences; 17 candidate sentence(s) were refused by a reviewer with the reason recorded.
The fuller derivation this dataset is chartered to grow into (not yet what the figures above are; they are each source's own published figure as read): one row per jurisdiction (GB, Northern Ireland) per duty - leak-check interval by CO2e band, the doubling for automatic leak detection, the hermetically sealed exemption, record content and the five-year retention, the certification precondition and the penalty - quoted verbatim from the authority with its effective date; the derivation is the GB/NI DIVERGENCE table, which no vendor publishes, because GB remains on assimilated 517/2014 while Northern Ireland moved to (EU) 2024/573, and the worked kilogram equivalents per common refrigerant computed from the GWP table so an operator can read the interval off a nameplate charge
17 candidate sentences on these pages were refused by a reviewer; each refusal and its reason is recorded in the review ledger.
Sources (9)
- GOV.UK: checking F gas equipment for leaks(the publisher's own terms; quoted for reporting and comment)
- GOV.UK: record F gas in equipment you own or service(the publisher's own terms; quoted for reporting and comment)
- GOV.UK: calculate the carbon dioxide equivalent quantity of an F gas(the publisher's own terms; quoted for reporting and comment)
- The Fluorinated Greenhouse Gases Regulations 2015(the publisher's own terms; quoted for reporting and comment)
- Assimilated Regulation (EU) No 517/2014 on fluorinated greenhouse gases(the publisher's own terms; quoted for reporting and comment)
- GOV.UK: F gas in refrigeration, air conditioning and fire protection systems(the publisher's own terms; quoted for reporting and comment)
- NetRegs: stationary refrigeration, air conditioning and heat pumps F-gas controls(the publisher's own terms; quoted for reporting and comment)
- European Commission: F-gas legislation(the publisher's own terms; quoted for reporting and comment)
- Regulation (EU) 2024/573 on fluorinated greenhouse gases(the publisher's own terms; quoted for reporting and comment)
Cite or embed this figure
The Fgas Duties and Thresholds carries 5 published figures read from 2 sources' own pages, from 3 to 12 month, read 31 October 2026.
2 of the 9 named sources read in full publish a figure; 7 publish none, read 31 October 2026.
Fgas Duties and Thresholds, duty leak-detection-system-check: median 6 month across 1 source, read 31 October 2026.
Fgas Duties and Thresholds, duty hermetic-exemption: median 0.10 percent across 1 source, read 31 October 2026.
Fgas Duties and Thresholds, duty leak-check-under-50t: median 12 month across 1 source, read 31 October 2026.
Fgas Duties and Thresholds, duty leak-check-50-500t: median 6 month across 1 source, read 31 October 2026.
Fgas Duties and Thresholds, duty leak-check-500t-plus: median 3 month across 1 source, read 31 October 2026.
Fgas Duties and Thresholds, duty record-retention: median 5 year across 2 sources, read 31 October 2026.
Fgas Duties and Thresholds, duty leak-check-5-50t: median 12 month across 1 source, read 31 October 2026.
Cite as: "industrialfridgeservice.co.uk Fgas Duties and Thresholds", updated 2026-10-31, https://industrialfridgeservice.co.uk/datasets/fgas-duties-and-thresholds/.
Download the CSV (8 rows, computed 2026-10-31)
Questions this data answers
How often must my refrigeration plant be leak checked, what records must I keep, and what differs in Northern Ireland?
The Fgas Duties and Thresholds carries 5 published figures read from 2 sources' own pages, from 3 to 12 month, read 31 October 2026.
Where do the figures in the Fgas Duties and Thresholds come from?
Every figure is quoted from its source's own page and dated (last read 31 Oct 2026). 9 named sources were read and 2 publish a figure; the 7 that publish none are recorded as not published, never estimated.