A malfunction in a tankless electric water heater caused a fire Thursday that destroyed a Niu Valley home, firefighters have determined.
Honolulu Fire Department inspectors found the origin of the blaze in a crawl space under the home at 440 Puamamane St., according to Capt. Earle Kealoha.
Damage was estimated at $300,000 to the wooden building and $50,000 to contents.
Kamehameha Schools trustee Nainoa Thompson and his wife, Kathy Muneno, lived in the house but were not home at the time.