ELYRIA — An air-conditioning unit in a third-floor bedroom started a fire that caused about $10,000 in damage to a Furnace Street home this morning.

Firefighters responded to the fire, at 519 Furnace, a little before 10:30 a.m. They were on the scene about an hour.

Everyone got out of the home OK and stood on the sidewalk to watch as firefighters battled light smoke that came from the rear of the home.

Sareesce Groves and his family of 10 will be put up by the American Red Cross. The home isn’t inhabitable right now because the electrical meter was pulled, according to Assistant Fire Chief Tim Mitchell.

Groves said he believed the fire was contained to one bedroom. He didn’t know the extent of smoke and water damage.

Furnace Street was blocked while firefighters extinguish the fire.

Mitchell said air conditioners causing fires is not common.

“It might have been the age of it, or it might have overheated,” he said.