Wednesday, January 18, 2012

Hot Water Heater Settings

In the northeast US, we're in the middle of winter, so some folks are adjusting their hot water heater -- especially if this is used for heating the house.

  • The difference between the high / low setting should be around 20-30 degrees apart for many systems.
  • Increasing the spread slightly (5-10 degrees), and lowering the temperature of the min/max settings (try 5-10 degrees at a time) can save 5-10% of your heating bill.
  • A common setting is 140/160, although 135/160 may be hot enough for some systems.  During the summer, 125/150 may be hot enough.
  • Lower temperatures may make the heating / radiators quieter as they heat up.  They will also cause less mineral deposits, making the hot water tank/system last longer.
  • During the winter, may need to adjust hotter if the hot water is used for heating.
Read more from this forum: