REFCOM Certified — REF1024168, valid to March 2029

F-Gas Compliance London — Leak Checks, Records & Refrigerant Handling

Managed F-Gas compliance for commercial buildings, residential blocks, and landlords with air conditioning. Certified engineers, compliant documentation, and scheduled inspections under one contract.

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UK F-Gas compliance is governed by the Fluorinated Greenhouse Gases Regulations 2015 (SI 2015/310, as amended), with retained EU Regulation 517/2014 governing the technical requirements for leak checks and certification. These Regulations apply to any operator of stationary refrigeration, air conditioning, or heat pump equipment containing fluorinated greenhouse gases above a charge of 5 tCO₂e. Obligations include regular leak checks at frequencies determined by system charge size — not simply annual — plus documented records of all checks, refrigerant quantities handled, and engineer credentials. All F-Gas work must be carried out by a REFCOM-certified company using individually qualified engineers. Mainteniq holds REFCOM company certification REF1024168 (BESA Group, valid to March 2029), with a certificate scope covering all systems under or over 3 kg (5 tCO₂e) and hermetically sealed systems over 6 kg (10 tCO₂e).

Our F-Gas Certification

REF1024168
REFCOM Company Certificate
Issued by REFCOM (BESA Group). Certificate scope: all systems under or over 3 kg (5 tCO₂e); hermetically sealed systems over 6 kg (10 tCO₂e)
March 2029
Certification Valid To
REFCOM company certificates are renewed every 3 years — current certificate is valid through March 2029
Category 1
Engineer Qualification
City & Guilds 2079-11 — covers all system sizes, including installation, maintenance, leak checking, and refrigerant recovery

Source: gov.uk — Certification for companies working on F-Gas equipment

F-Gas Leak Check Frequency

Leak check intervals are set by system charge size — not by a flat annual rule. The charge is measured in tCO₂e (tonnes of CO₂ equivalent), which accounts for the refrigerant's global warming potential. ALDS (Automatic Leak Detection Systems) double the permitted interval; they are mandatory for systems above 500 tCO₂e.

System charge (tCO₂e)Without ALDSWith ALDS
5 – 49.9 tCO₂eAnnual (every 12 months)Every 24 months
50 – 499.9 tCO₂eEvery 6 monthsAnnual (every 12 months)
500+ tCO₂eEvery 3 monthsEvery 6 months(ALDS mandatory)

Source: gov.uk — Checking F-Gas equipment for leaks. Based on EU Regulation 517/2014, Articles 4 and 5, retained as UK law.

Enforcement: The Environment Agency enforces F-Gas Regulations in England. Penalties for non-compliance are substantial — cases have resulted in fines exceeding £200,000 and, in serious cases, criminal prosecution. Using uncertified engineers or failing to maintain F-Gas records are the most common enforcement triggers.

What Mainteniq Delivers

Leak detection checks at the correct frequency for your system charge size

Refrigerant log maintenance — documented record of all checks and quantities handled

Refrigerant recovery, recharging, and top-up by F-Gas certified engineers

ALDS (Automatic Leak Detection System) installation and commissioning where required

Gas disposal and safe handling of condemned refrigerant under F-Gas Regulations

Compliance calendar management — scheduled checks with advance notification

F-Gas records issued in the format required by the Environment Agency

Coordination with system installation or service works under a single contract

Who Needs F-Gas Compliance

Commercial Property Operators

Any business or operator of commercial AC, refrigeration, or heat pump equipment containing fluorinated gases above 5 tCO₂e must comply — including leak checks, documented records, and use of certified engineers.

Block Management & FM Companies

Residential blocks and mixed-use buildings with central AC plant, VRF arrays, or communal heat pumps fall within the F-Gas Regulations. Facilities managers are the responsible operators.

Landlords with Residential AC

Landlords who install air conditioning in rented flats or serviced accommodation must ensure all refrigerant work is performed by REFCOM-certified engineers — regardless of system size.

Airbnb & Serviced Accommodation Operators

Short-let operators with AC systems in managed properties are responsible for ensuring F-Gas obligations are met. Undocumented refrigerant handling exposes operators to Environment Agency enforcement.

F-Gas Compliance for Landlords with Residential AC

Most F-Gas guidance is written for large commercial building operators. If you are a private landlord who has installed air conditioning in a rental flat, or a serviced accommodation operator with split-system AC in individual units, the Regulations still apply to you — just at the small-system end of the charge scale.

What applies to a typical residential split unit

  • Small residential wall-split units typically fall in the 5–49.9 tCO₂e bracket — annual leak checks required (unless ALDS fitted)
  • All refrigerant handling — including a top-up after a service — must be done by a REFCOM-certified company
  • Records of leak checks must be kept and available to the Environment Agency on request
  • Using an uncertified engineer — even for a simple regas — is a breach of the Regulations, regardless of system size

Why landlords should bundle F-Gas into a maintenance contract

  • F-Gas leak checks can be scheduled alongside your annual AC service — one engineer visit, one record
  • Compliance records are maintained automatically — no risk of gaps in documentation between tenancies
  • TM44 air conditioning inspection (required every 5 years for commercial systems over 12kW) can also be coordinated by Mainteniq
  • One point of contact for all AC compliance — from service and leak check to refrigerant handling and records
Note on TM44: If you manage commercial AC systems with a combined output above 12kW, a TM44 energy inspection is also required every 5 years under the Energy Performance of Buildings Regulations. Mainteniq coordinates TM44 inspections through accredited assessors alongside F-Gas work. Learn about TM44 inspections →

F-Gas as a Managed Service

Most F-Gas providers sell individual transactions — one visit, one invoice. We manage F-Gas compliance as a scheduled service within a property maintenance contract, with documentation, calendar management, and advance reminders included.

We maintain your F-Gas records

Regulations require documented leak check logs, refrigerant quantities handled, and engineer certification details. We issue compliant records after every visit — ready for an Environment Agency audit.

We schedule and remind you

No spreadsheet. We hold your system's charge size on file, calculate the next inspection deadline, and contact you in advance. The correct interval — annual, 6-monthly, or quarterly — is calculated for each system.

One contract, all your sites

Portfolio landlords, block management companies and FM operators can schedule F-Gas compliance across multiple properties under a single Mainteniq maintenance contract.

Mainteniq engineer carrying out F-Gas refrigerant compliance work on commercial AC equipment in London

How Mainteniq Delivers F-Gas Compliance

1

Book via WhatsApp or phone

Tell us the property type, number of AC systems, and — if known — the refrigerant type and approximate charge size. We calculate the correct leak check frequency and schedule accordingly.

2

F-Gas certified engineer attends

All checks and refrigerant handling are carried out by engineers holding City & Guilds 2079 Category 1 qualification, under Mainteniq's REFCOM company certification REF1024168.

3

Compliant F-Gas records issued

You receive a documented leak check record in the format required by the Environment Agency — including date, result, refrigerant quantities, and engineer certification details.

4

Next inspection scheduled

We log the system charge and next due date. For contracted clients we issue advance reminders and schedule the follow-up automatically — no chasing required.

Regulatory Guidance

gov.uk — Checking F-Gas equipment for leaksgov.uk — F-Gas company certification requirementsSI 2015/310 — Fluorinated Greenhouse Gases Regulations 2015

Mainteniq holds REFCOM company F-Gas certification REF1024168 (BESA Group, valid to March 2029). All engineers hold City & Guilds 2079 Category 1 qualification covering all system sizes.

Book F-Gas Compliance for Your London Property

REFCOM-certified leak checks, compliant documentation, and scheduled inspection management. Commercial buildings, residential blocks, and landlords with AC across London and 120 miles.

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Also need TM44, CP12, or EICR? View all compliance certificates →

F-Gas Compliance FAQs

The UK F-Gas Regulation is governed by the Fluorinated Greenhouse Gases Regulations 2015 (SI 2015/310, as amended), with retained EU Regulation 517/2014 setting the technical requirements for leak checks and certification. It applies to any operator of stationary refrigeration, air conditioning, or heat pump equipment containing fluorinated greenhouse gases above a charge of 5 tCO₂e. This covers commercial buildings, residential blocks with central AC plant, landlords with air conditioning in rented properties, and operators of industrial refrigeration equipment. All refrigerant handling and leak checking must be carried out by a REFCOM-certified company using individually qualified engineers — using an uncertified contractor is a breach of the Regulations, regardless of system size.

Frequency depends on the system charge measured in tCO₂e (tonnes of CO₂ equivalent) — not on a flat annual rule. Systems between 5 and 49.9 tCO₂e (covering most small commercial and residential AC) require annual leak checks — or every 24 months if a certified Automatic Leak Detection System (ALDS) is fitted. Systems between 50 and 499.9 tCO₂e require checks every 6 months (annual with ALDS). Systems above 500 tCO₂e require quarterly checks (every 6 months with ALDS) and ALDS installation is mandatory at this charge level. These requirements are set by Article 4 of EU Regulation 517/2014, retained as UK law. The Environment Agency enforces compliance.

Yes, if the system contains fluorinated refrigerants above 5 tCO₂e. Most residential wall-split air conditioning units fall in the 5–49.9 tCO₂e bracket, which means annual leak checks are required. Even for a small single-room unit, all refrigerant handling — including a simple regas after a service — must be performed by a REFCOM-certified company. As a landlord, you are the operator of any AC equipment installed in your property and are responsible for ensuring F-Gas obligations are met. Failure to use certified engineers or to maintain proper records can result in Environment Agency enforcement action regardless of how small the system is.

The Regulations require operators to maintain a record for each F-Gas system containing 5 tCO₂e or more. The record must include: the quantity and type of fluorinated gas contained; any quantity added or recovered during servicing, maintenance, or disposal; the company and person who performed each service or check; the dates and results of all leak checks; and action taken if a leak was detected. Records must be kept for at least five years and made available to the Environment Agency on request. Mainteniq issues a compliant F-Gas log after every inspection visit, which includes all required fields in the correct format.

REFCOM (a subsidiary of the BESA Group) operates the UK's mandatory F-Gas company certification register. You can check whether a company holds a valid certificate at refcom.org.uk. Individual engineers must hold a City & Guilds 2079 qualification — Category 1 (2079-11) is required for work on all system sizes including installation, maintenance, and refrigerant recovery. Category 2 (2079-12) covers smaller systems under 3kg. Mainteniq's REFCOM company certification number is REF1024168, valid to March 2029. All our engineers hold Category 1 qualification. You should verify any contractor's company certificate before engaging them for refrigerant work.