DIY Network

How to Install an Instant Hot Water Tank

Use these instructions to install a system under the sink that provides hot water without the wait. Some high-end models even come with a water filter system and cold water dispenser.

More in Plumbing


  • double compression stop
  • instant hot water tank system


  • cordless drill
  • drill bits
  • hammer
  • nail set
  • safety glasses
  • adjustable wrench
  • adjustable pliers
  • emery cloth
  • marker
  • stainless steel drill bit