Ask This Old House — Episode 2: Home Intercom System; Energy-Efficient Fireplace

You are watching the episode Home Intercom System; Energy-Efficient Fireplace Host Kevin O'Connor teams up with an electrician to install a home intercom system. Then Kevin, along with plumbing and heating expert Richard Trethewey, landscaping contractor Roger Cook and general contractor Tom Silva ask, "What is it?" Next, Richard helps a homeowner make a wood-burning fireplace cleaner and more energy efficient by installing a gas-burning insert.