Firefighters attended the scene in Tomkinson Street at about 6.10pm on Friday (April 19).
A spokesperson for Cheshire Fire and Rescue Service said: “An electrical fault is believed to be the most probable cause of a fire involving the bedroom of a mid-terraced property.
“Firefighters wearing breathing apparatus extinguished the fire using hose reel water jets once power had been isolated.
“Floorboards were removed and a thermal imaging camera used to check for fire spread to neighbouring properties.”