The Fire Service wants 300 new volunteers and it's targeting women.
The service says it's increasingly difficult to find people for callouts during the day.
Women will be deliberately targeted in a new campaign because they tend to be the ones at home with children during the day.
The service says a number of brigades have volunteer "grandparents" who go to the station when the siren sounds and look after the children of the women firefighters while they are on a call.
Ms McKenzie says firefighters do not need to be big and burly, just moderately fit and with common sense.