Ask This Old House — Episode 12: Forced-Air Furnace and Air Conditioning; Damaged Oak Flooring

You are watching the episode Forced-Air Furnace and Air Conditioning; Damaged Oak Flooring Plumbing and heating expert Richard Trethewey helps a pair of homeowners reduce their utility bills by installing a new forced-air furnace and air conditioning system. Then, general contractor Tom Silva helps a homeowner repair damage to her oak flooring that was caused by a leaky radiator.