Intermatic EH40 240-Volt Electronic Water Heater Timer

by Intermatic

Product Description

From the Manufacturer

These time switches provide automatic control for electric water heaters. They provide to-the-minute accuracy in programming and time keeping. The time switches can be programmed for repeat daily scheduling, 5-day working week scheduling, weekend scheduling or any individual day scheduling. Timers can be scheduled for operation during the lowest time-of-day rates or to switch off the electric heater during period of utilities peak power usage. The time switches can be set to operate for up to 6 ON/OFF operations daily for a maximum of 42 ON/OFF operations weekly. Both models provide a convenient external override switch and LED load indicator for ease in scheduling hot water as required for extra hot water demands. The timers include a "AA" alkaline battery carryover which protects both time keeping and program information for a minimum of 3 years.

Product Description

Intermatic EH40 Energy Controls - Electronic Time Switches - Water Heater

Product Details

• Shipping Weight: 2.2 pounds (View shipping rates and policies)
• Shipping: This item is also available for shipping to select countries outside the U.S.
• ASIN: B000NCYPOM
• Item model number: EH40
• Average Customer Review: 4.4 out of 5 stars  See all reviews (32 customer reviews)
• Amazon Best Sellers Rank: #2,716 in Home Improvement (See Top 100 in Home Improvement)
  • #23 in Home Improvement > Electrical > Timers
  • #27 in Home & Kitchen > Kitchen & Dining > Kitchen Utensils & Gadgets > Thermometers & Timers > Timers

Customer Reviews

Most Helpful Customer Reviews

29 of 29 people found the following review helpful:

5.0 out of 5 stars Conserving energy is the green thing to do, December 17, 2008

By 

R. Drew - See all my reviews
(REAL NAME)   

Amazon Verified Purchase

This review is from: Intermatic EH40 240-Volt Electronic Water Heater Timer (Tools & Home Improvement)

Ever take one of those energy self-audits? Mine had high marks for the easy things- insulation, updated windows, weather stripping, etc. But my water heater- I cannot install the 'tankless', because I have no chimney. It has always been electric, but keeping 55 gallons hot all 24 hours is not efficient. So I ordered the Intermatic, and once installed outside the breaker panel, found it to be as easy to operate as a setback thermostat.
You can set it to heat up prior to morning showers, then (on weekdays) turn the power off, and heat up again in time for evening meals, cleaning, etc. Weekends can be an entirely different schedule. There is even a 'shutoff' feature to bypass the schedule while you take vacation. Instructions are clear, and programmed from the front.
I feel this is saving money (and more still when we get Time-of-Day pricing).

15 of 16 people found the following review helpful:

5.0 out of 5 stars Timer, October 3, 2009

By 

Moefugger - See all my reviews

Amazon Verified Purchase

This review is from: Intermatic EH40 240-Volt Electronic Water Heater Timer (Tools & Home Improvement)

Easy to install.
Has timer settings for each day or the 5 day week with separate weekend settings which are what I use.
Can have several on/off setting on each of the days.
I set mine to turn off when I go to work and turn on when I get back so I can shower then turn off before I go to bed and come on just before I get up.
The water does not cool much while it is off since I do not use it then. When it does turn on it does not take much time to get the water back to the right temp.
There is also a manual on/off button just in case.

11 of 11 people found the following review helpful:

3.0 out of 5 stars water heater timer, December 30, 2010

By 

R. Saxton "lonfu" (Kingman Az) - See all my reviews
(REAL NAME)   

This review is from: Intermatic EH40 240-Volt Electronic Water Heater Timer (Tools & Home Improvement)

Bought this model of timer about 3 years ago. It has failed. It is easy to install and use but the main power relay coil has failed and I can't repair it so I must order another one.