Russ Tamblyn who plays Dr Montague played Luke in the first movie adaptation of The Haunting of Hill House called The Haunting (1963).
Throughout the series, the cook-stove/range in Hill House is an electric model from 1940s or 50s, clearly (and wrongly) shown with an exhaust duct extending from behind it and into the wall. Electric ovens don't need exhaust ducts - gas ovens do, to vent the byproducts of combustion. The model in the episode isn't dual fuel. There's no need for this duct at all.