A homeowner’s radiator sprung away from the pipe when he tried to replace the valve, so Ask This Old House plumbing and HVAC expert Richard Trethewey heads to his house to help him reconnect it SUBSCRIBE to This Old House: http://bit.ly/SubscribeThisOldHouse Time: 1-2 hours Cost: $50 Skill Level: Difficult Tools List for Reconnecting a Radiator:…