Two Dunedin residents were taken to hospital with smoke inhalation following a fire in their central city house overnight.

Emergency services were called to the Pitt Street at 10.45pm where the blaze was "well involved'' when they arrived, said a fire communications spokesman.

Crews put the fire out and two people were transported to hospital to be treated for smoke inhalation, he said.

A fire investigator will be at the scene today to determine the cause.

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