Ask This Old House plumbing and heating expert Richard Trethewey tracks down the source of a clogged drain using some high tech equipment. SUBSCRIBE to This Old House: http://bit.ly/SubscribeThisOldHouse Time: 1-2 hours Cost: $10,000 in tools Skill Level: Advanced Tools List: - Gloves [https://amzn.to/31x4uDf] - Drain Camera [https://amzn.to/2XdB5Pa] - Drain Locator Tool [https://amzn.to/2Xb9Btz] Steps: 1.…