F-Gas & TM44 Deadline Calculator
Work out your next TM44 inspection date and F-Gas leak-check frequency in under a minute, based on your system size and refrigerant charge.
TM44 air conditioning inspection
If your combined AC cooling output is over 12kW, you need a TM44 inspection at least once every 5 years. Check with your installer or REFCOM-registered engineer if you're not sure of the combined figure.
F-Gas leak checks
Select a refrigerant and enter the charge weight to see the required check frequency.
This is guidance based on the published F-Gas Regulation and TM44 thresholds, not a compliance certificate. Confirm exact obligations for your specific system with your REFCOM-registered engineer.
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