A Christchurch couple are thanking their smoke alarms for saving their lives after fire tore through their home.
Marie Musson and partner Derek Petch were only alerted to the blaze once their alarms went off.
"We had no idea fire had taken hold of the property until the smoke alarms went off," Musson said.
The smoke alarms were not only working but had also been recently upgraded, she said.
"Thankfully, we were able to get out safely, but without the warning, it could have been very different. I can't emphasise enough the importance of up-to-date smoke alarms."