F-gas leak checks and records in Derry
Get your air conditioning in Derry on the right side of the rules with F-gas leak checks.
- Price confirmed before booking
- Every system listed and checked
- Records you can show an inspector
How much do F-gas leak checks cost in Derry?
Expect £135–£225 per visit, first system ex VAT in Derry; a typical job — leak checks on 3–6 systems in one visit — usually comes to £255–£795 plus VAT. We confirm the price once we know how many systems you have.
An F-gas leak check is a legally required inspection of air conditioning and refrigeration equipment containing fluorinated gases at or above 5 tonnes CO2 equivalent.
Working in Derry
In Derry, typical commercial premises include town-centre shops and offices, surgeries, gyms and units on business parks.
Postcode districts we cover in Derry include BT47. Nearby, we also cover Strabane (about 22 km), Limavady (about 24 km) and Coleraine (about 44 km). The legal duty sits with whoever controls the equipment, so tenants and landlords in Derry should agree who arranges F-gas leak checks.
What is included
- Refrigerant type, charge and CO2e calculation for each system
- Leak check by an F-gas certified engineer
- Direct and indirect checks to the required method
- Labels and records updated
- Leak repair quote if a leak is found
Prices in Derry
Prices below include our regional adjustment for Northern Ireland (8% below the UK guide).
| Item | Guide price (ex VAT) | Inc VAT | Basis |
|---|---|---|---|
| Leak check, first system (includes attendance) | £135–£225 | £162–£270 | per visit |
| Each additional system, same visit | £60–£115 | £72–£138 | per system |
| F-gas asset register set-up | Up to £365 | Up to £438 | per site |
| Automatic leak detection system | £730–£2,695 | £876–£3,234 | per system |
Ex VAT. Leak checks are often combined with a service visit at no extra attendance charge.
How a visit in Derry works
Asset check
We record each system's refrigerant type and charge and calculate its CO2e.
Set the frequency
Each system gets the legal interval for its CO2e and any automatic leak detection.
Check
The engineer checks joints, valves, components and operating data for signs of leakage.
Record
Results are recorded and kept on your F-gas log for at least five years.
Before you book in Derry
Northern Ireland
Northern Ireland follows the EU F-gas Regulation (EU) 2024/573 rather than the GB rules. For HFC systems the leak-check thresholds and intervals are the same; it also requires checks on equipment holding 1 kg or more of certain other fluorinated gases, such as HFO refrigerants.
Shared buildings
In multi-let buildings, roof space, risers and plant areas are often controlled by a managing agent. We work to their permits and method-statement requirements.
Operator duty
The legal duty sits with the operator — the person or business with actual control over the equipment.
Roof and height work
Flat roofs, high walls and atriums need the right access equipment and edge protection. We plan towers, MEWPs or scaffold before the job, not on the day.
Premises we work in around Derry
- Hotels and hospitality: quiet bedroom units, public-area cooling and heat recovery for hotels.
Compliance in Northern Ireland: refrigerant work falls under EU F-gas rules that apply in Northern Ireland, and buildings with more than 12 kW of air conditioning in total need a periodic energy inspection (often called TM44).
Your questions answered
How much do F-gas leak checks cost in Derry?
In Derry, guide prices are around £135–£225 per visit, first system, plus VAT; a typical job (leak checks on 3–6 systems in one visit) is £255–£795 plus VAT.
Do you also cover Strabane, Limavady and Coleraine?
Yes. Alongside Derry, we also cover Strabane, Limavady and Coleraine. Each has its own page with local guide prices.
Which postcodes do you cover in Derry?
All of them, including BT47. Give us your postcode when you enquire and we will confirm the visit details.
Which systems need F-gas leak checks in Northern Ireland?
Northern Ireland follows the EU F-gas Regulation (EU) 2024/573. For HFC systems the thresholds and intervals match the GB rules — checks from 5 tonnes CO2 equivalent, at least every 12, 6 or 3 months depending on size — and equipment holding 1 kg or more of certain other fluorinated gases, such as HFO refrigerants, also needs checks.
How long must records be kept?
For at least five years, covering refrigerant type and quantity, additions and recoveries, leak-check dates and results, and who carried out the work.
What is CO2 equivalent?
The refrigerant charge in kilograms multiplied by its global warming potential (GWP), divided by 1,000. It puts every refrigerant on the same scale.
Get a guide price for Derry
The visit price is agreed before we book. We reply with a guide price or available dates.