The high number of call-outs indicated a need for greater awareness of the risks posed to animals and children.
"The temperature inside a vehicle with no ventilation rises rapidly, particularly in summer and it doesn't take long before a child or a pet gets agitated and suffers the effects of heat exhaustion with its potentially fatal consequences," said Mr Healy.
He said leaving windows wound down slightly was not a safe alternative and still put the child or pet at risk.
"The best thing you can do is never leave your kids or pets locked in the car, no matter what," he said.
Mr Healy said the majority of call-outs were because of accidental lockouts.
He said drivers mistakenly locked keys in boots, threw them on their passenger seat or even handed them to children to play with.
He advised parents and caregivers to make sure they always had their keys on them around their vehicles, especially if children and pets were inside.