Dean's focus today is fireplaces. Are they still needed in modern homes or are they obsolete? Historically, the fireplace played a cruicial role in the home for warmth, cooking and safety, but advancements have made them less needed in modern times. He discussed wood-burning, gas fireplaces, prefab fireplaces, and the differences and efficiency of all of them. He also discussed different design concepts for fireplaces in new home builds and renovations. A listeners asks Dean's advice on a tankless water heater that is no longer providing 'instant' heat.