8 of 9 people found the following review helpful
Overall a good machine,
This review is from: Intermatic WH21 Electric Water Heater Timer (Tools & Home Improvement)I purchased this for a 55 gallon water heater with two 4500w elements.
Only one element is on at a time (normal for most water heaters)
so I could use this SPST device with a 6250W rating.
I purchased about 6' of extra 3 conductor wire (10 gauge) and screwed this to the wall. Made all the connections, set it. it works.
Most studies I could find say this does not save you much money but in our situation where our water heater is in the cold garage and we are only two people who use limited water our standby losses are therefore significant and so I think it should save us a few dollars a month perhaps.
We have it set to come on
The water is set at only 115F and is still plenty hot 2-3 hours after the timer turns off (even if one of us has taken a shower).
I recommend buying niagara conservation 1.25 or 1.5gpm showerheads "earth style" before doing this type of conservation intervention.