Keep those pipes hot for energy savings

When heated water leaves your water heater, it can lose some of its warmth on the path there. Cold pipes cool down the water. But insulated pipes help keep the water hot.

Key Points

  • Insulate your hot water pipes to save energy.
  • Insulated pipes can raise water temperature 2-4 degrees.
  • That means you can lower your water temp setting and use less energy.

“Nice pipes!”

Maybe you heard this when sporting your favorite tank top this summer (we can discuss the cost of tickets to the “gun show” later).

But you could soon earn this complement for your hot water pipes.

According to the Department of Energy, insulating your hot water pipes could help you save energy, especially as we start to look toward colder-weather months.

When heated water leaves your water heater, it can lose some of its warmth on the path there. Cold pipes cool down the water. But insulated pipes help keep the water hot.

Bonus perk: Insulated pipes will also help your shower get hot faster, saving you some time and helping you conserve water.

The energy savings come from being able to lower the water temperature on your water heater. Since you’re not losing heat during delivery, the water can start out a little cooler. This lower setting uses less energy since your heater won’t have to work quite so hard to reach the lower temp.

This DIY project should take you about three hours and cost $10-15 in materials.

Here’s a handy shopping list:

  • Tape measure (Note: If your ability level is at the point you have to go purchase a tape measure, you might want to also call your dad/handy aunt/friend who you saw use a screwdriver at least once.)
  • Pipe sleeves or strips of fiberglass insulation (And no, pool noodles don’t count.)
  • Acrylic or duct tape or cable ties to secure the sleeves or aluminum foil tape or wire to secure the fiberglass pipe-wrap (Bonus points if you can make the hardware sales associate say “aluminum linoleum” 10 times fast.)
  • Gloves and long sleeves and pants if you’re using fiberglass pipe-wrap
  • Scissors, box cutter or utility knife for cutting insulation
  • Headlamp or light if you’re working in crawl space or dark area

And here’s a great step-by-step video:

If everything goes well, you’ll soon be enjoying energy savings and wasting less time waiting for the shower to warm up.

Maybe you can use those extra minutes bulking up your other pipes.

Tickets to the gun show just got a little steeper.


Sarah FolslandSarah is mom to the two cutest little girls in the world. Before choosing to make changing diapers and reading bed time stories her full time gig, she earned a degree in political science from The University of South Dakota, worked in the governor’s office as a policy analyst and dabbled in communications at her local utility. Follow Sarah on Twitter @EnergyMommy.

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