Hot Water Gauge

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Overview

Is your hot water heater set too high and wasting energy? This easy-to-use hot water gauge can let you know. Simply place this card into a cup, then run the tap at its highest temperature into the cup for 3-5 minutes to determine if it’s within the efficiency range. If it’s too high, adjust your hot water heater’s temperature setting to 120°F.

Benefits

  • Quickly gauge your hot water heater’s temperature
  • Easy to use; no tools required
Product Instructions
  1. Insert the bottom of this card into a cup of hot water. (Run water for three to five minutes.)
  2. If a number appears and it is: 
    1. GREEN – that is the temperature of the water
    2. BLUE – the temperature is more than that number
    3. TAN – the temperature is less than that number
    4. BLACK WITHIN THE RED SQUARE – the temperature is 150°F or more 
  3. If no change occurs, the water temperature is under 120°F.
  4. For most uses, 120°F to 130°F should be adequate.