Gas Networks Ireland will attempt to call on your premises up to four times a year to read your meter. If you are not at home when the meter reader comes, they will leave a 'no access' card that will require you to submit a reading to Gas Networks Ireland on 1850 427 732. 

If a card is left, it will advise you to submit your meter reading within 24 hours. When calling Gas Networks Ireland, make sure you have the GPRN number ready.