HIXSON, HAMILTON COUNTY (WRCB) – Investigators say a window air conditioning unit likely caused a fire in Hixson.

The house on May Circle caught fire just before seven o'clock Monday morning.

The majority of the flames were in the attached garage, but it quickly spread to the rest of the house.

Damage is limited to the garage and kitchen, but investigators put the dollar loss at $80,000-to-$100,000.

Much of the home has smoke and water damage.