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Timers Type
Wall Mounted Timers
Load Type
# of Loads
1 Load
110V AC
120V AC
240V AC
277V AC
Ease of Installation
Intermediate (Installs < 60 minutes)
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Automatically Shut Off Your Appliances With Ease
Intermatic EH40 Electronic Water Heater Timer
Intermatic EH40 Electronic Water Heater Timer
Intermatic EH40 Electronic Water Heater Timer
Item# 25088
Price: Normally $162.00 
Hot Deal $65.08
Free shipping on orders over $175 - See Details


  • Daily, weekly or yearly scheduling
  • Fixed, astro, pulse and interval
  • Lifetime memory for program data
  • 8 year battery maintains timekeeping
  • 120, 208, 240 or 277V input

Essential Info

The Intermatic EH40 Electronic Water Heater Timer provides 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 periods of utilities peak power usage. The time switch 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 an AA alkaline battery which protects both time keeping and program information for a minimum of 3 years.


What's Included

  • 1x - Electronic Water Heater Timer
  • 1x - Owner's Manual

  • Specifications

    Manufacturer Product NoEH40
    Works with3,600W @ 120V
    7,200W @ 240V
    Manufacturer Warranty1- year limited warranty
    Important notes:
    Defective exchanges for identical item within 30 days of purchase. After 30 days, please contact the manufacturer.
    Manufacturer contact information: Intermatic Inc, Tel: (815) 675-7000


    21 Ratings
    5 star: 71%  (15)
    4 star: 19%  (4)
    3 star: 0%  (0)
    2 star: 5%  (1)
    1 star: 5%  (1)
    Average Customer Rating
    (21 customer ratings)
    Share your thoughts with other customers
    BERNARD -- las vegas, NV   4/17/2014
    Unfortunately I need to return this item.It was the wrong voltage and because of time being a factor I purchased the correct timers locally. Please instruct me the procedure to return. Thanks, Bernard
    RAYMOND -- marcy, NY   10/11/2013
    Excellent product, service and very competitive pricing.
    LANCE -- scottsdale, AZ   6/16/2013
    The display is unreadable unless you program it in a dark room but it works.
    MICHAEL -- donalds, SC   5/9/2013
    Great product. Shipped quickly, arrived safely, installed easily. Already saving me money on my electrid bills. Would purchase again and recommend to others.
    RUSSELL -- morgantown, WV   3/10/2013
    Great product that saves a lot of money. Good instructions makes installation easy for anyone who is handy. Battery back-up is important for those of us who have frequent power outages, which is why I chose this style rather than a mechanical type. Easy and very flexible programming allows one to fit the times their water heater is on to their schedule.
    TSACHI -- winter springs, FL   10/25/2012
    Works great. I wish there was an additional connector to activate the relay from external device ( x10 switch maybe ).
    AMOS -- west salem, IL   9/1/2012
    The electronic timer is installed and so far is working as desired. I had a problem with the input wiring during installation, but that was corrected and the unit is now working. I expect to lower my electric power bill using this device.
    BEN -- reno, NV   5/14/2012
    Works great and saves energy!
    GLENDA -- mendenhall, MS   9/12/2011
    Needed #10 wire to install which I did not know beforehand and had to go to the internet to get more info to install. Have only used it less than a month but my electric bill has gone down. I am looking forward to my first full statement to see results.
    DAVID -- blanchard, OK   6/15/2011
    It works graet, easy install. I would recommend this product to anyone. To bad it's made in china and not the USA!
    JEFFREY M. -- scottsdale, AZ   6/11/2011
    Great item that pays itself back quickly. Installation instructions could be more clear, but a quick look on the internet will help.
    KURT J -- kentville, NS   4/23/2011
    I have used this product before and highly recommend it. First quality item and works exactly as described!
    MARK -- loretto, ON   4/23/2011
    great service again and a very fair price
    PERRY -- kemptville, ON   2/27/2011
    Appears to be good quality. Easy to program.
    DANIEL M -- syracuse, NY   11/24/2010
    This is the second unit I have purchased and i'm very pleased with this unit.
    LEE -- oviedo, FL   10/1/2010
    I first purchased a GE (GE 15132 7-Day Digital Timer) timer and it was a piece of junk. The reset button broke on it the first time I used it. This Intermatic timer is much better. Easy install and so far is working exactly as expected. I like the easy on/off button for when you need to be off schedule.

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