The Charles City Fire Department responded to at emergency call at about 10 a.m. Sunday at a house at Joslin and Hulin Streets.
The department responded with two trucks and no smoke or flame was obvious. Firefighters entered through the front door where they set up a large fan.
By 9:15 a.m, they packed up the fan, put away equipment and departed.
Firefighters said it was a cooking fire.
No injuries or serious damage.