Thornton said the fire had been extinguished by the time they arrived.
"It was lucky someone was home. It could've been a major," he said. "He did an amazing job really."
Thornton said there was minor damage with the ceiling cavity blackened, obvious on the outside of the house.
He said that showed how hot the fire had burned.
The brigade used a thermal imaging camera to make sure there were no further hotspots and to check the main one had cooled before they left the scene.
"We do it so they know they're safe and they're happy. It helps them feel comfortable when they go to bed that night after what happened."
Thornton was unsure whether an electrical fault or another malfunction had caused the fire to start.
He urged people to make sure everything in their home was in working order just to be extra safe.