Intermatic WH40 Electric Water Heater Timer, Grey

by Intermatic

Product Description

From the Manufacturer

This Intermatic "Little Grey Box" electronic water heater timer will provide up to 26% savings for your electric water heater. To maximize the savings, the timer should be used to operate one hour in the morning and two hours in the evening, set to turn "ON" one hour in advance of the usage periods. The trippers may be set from 1 to 23 hours. Three sets of trippers are included. It also provides a convenient external override switch. It is easy to use.

Product Description

- External override switch - May be able to save if "time of day" rates are used in your area - Heavy duty 40 amp rating - Easy to install - Easy to program - Supply hot water only when you need it - 10,000 watts, 40 amps, 250 volts, 60Hz capacity

Product Details

Product Manual [41kb PDF]

• Product Dimensions: 5 x 3 x 4.2 inches
• Shipping Weight: 2.8 pounds (View shipping rates and policies)
• Shipping: This item is also available for shipping to select countries outside the U.S.
• ASIN: B00004W4XI
• Item model number: WH40
• Average Customer Review: 3.6 out of 5 stars  See all reviews (28 customer reviews)
• Amazon Best Sellers Rank: #22,567 in Home Improvement (See Top 100 in Home Improvement)
  • #89 in Home Improvement > Electrical > Timers

Customer Reviews

Most Helpful Customer Reviews

10 of 10 people found the following review helpful:

5.0 out of 5 stars Works well, doesn't make a sound!, February 7, 2010

By 

J. Brader "Joel" (5 Mtn, PA, US) - See all my reviews
(REAL NAME)   

Amazon Verified Purchase

This review is from: Intermatic WH40 Electric Water Heater Timer, Grey (Tools & Home Improvement)

Easy to put on a wall, easy to hook up, doesn't make a sound. Important, when you take the insides out to mount, this is done by depressing the spring clip on top, and lift and pull out. Reassembly is reverse, but you have to make sure the side/bottom edges are behind the stops. If your not back and down all the way, the insides will seem loose and the timer will/could make noise, has you may read about in other reviews.
Our timer has not been mounted and running long enough to figure the savings, ours is set to run two hours in the morning and two hours in the evening. Our water heater, stays hot all day, every time we use water we got hot water all day and night when it is off mode. I am sure this will show great savings!!

7 of 7 people found the following review helpful:

5.0 out of 5 stars Intermatic WH40 Electric Water Heater Timer, Grey, May 23, 2010

By 

Wes - See all my reviews

Amazon Verified Purchase

This review is from: Intermatic WH40 Electric Water Heater Timer, Grey (Tools & Home Improvement)

The "Little Grey Box" (as it's called) arrived in perfect condition and was shipped on time. Installation was easy and it works as advertised. It came with "time pointers" enough for three settings instead of the two as advertised. (Bonus!) However; for my purposes I will only be using one on-off time. I am not an electrician and installation was easy with the right tools, plyers, screwdrivers, wire cutter and a proper wire-stipper. BUT BE ADVISED! Working around electricity scares me, especially 220. I made sure the breaker for the hotwater heater was off... And everytime I walked away to get or do something, or take a break, (I took my time with this), before starting the work again, I would check the breaker again to make sure it was off.

4 of 4 people found the following review helpful:

4.0 out of 5 stars Great Product, July 17, 2010

By 

W. Webster "Code Monkey" (Dallas, TX) - See all my reviews
(REAL NAME)   

Amazon Verified Purchase

This review is from: Intermatic WH40 Electric Water Heater Timer, Grey (Tools & Home Improvement)

I purchase this product with some resistance after reading the negative remarks on the noise produced after installation. I installed this timer a month ago and have yet to hear or experience any issues. This timer works just as it was designed and contrary to the comments that this makes way to much noise, I have yet to hear any noise. As for saving money, I'll have to wait and see but I'm pretty sure this is a smart buy.