Ask TOH | Instant Water Heater, Walkway Repair

  • Original Air Date: December 25, 2008
  • Season 7: Ep. 13
  • 23:58

Plumbing and heating expert Richard Trethewey and host Kevin O'Connor replace an old tank-type water heater with a new, energy-efficient tankless unit fueled by propane. Then Richard and Kevin, along with landscaping contractor Roger Cook and general contractor Tom Silva ask, "What is it?" Roger helps a homeowner level his sagging concrete walkway using a method called mudjacking, and Tom shares a viewer tip for removing hammer dents from a piece of wood.

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