|Item Weight||2.4 pounds|
|Product Dimensions||5.2 x 3 x 8 inches|
|Item model number||EH40|
|Style||240V 7,200 Watts|
|Item Package Quantity||1|
|Warranty Description||1 Year, replace unit, no labor|
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Intermatic EH40 240-Volt Electronic Water Heater Timer
|Price:||$59.99 & FREE Shipping. Details|
|You Save:||$23.69 (28%)|
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- Switch DPST, 240-Volt AC, 7200-Watt
- 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 set to operate for up to 6 ON/OFF operations daily for a maximum of 42 ON/OFF operations weekly
- provide a convenient external override switch and LED load indicator for ease in scheduling hot water as required for extra hot water demands
Frequently Bought Together
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- Brand: Intermatic -
- Part No.: EH40 -
- Wattage: 7200 Watt -
- Voltage: 240 -
- Amperage: 30.0 Amps per Pole -
- Battery Backup: AA Alkaline -
- Operations: Up to 42 On/Off Weekly -
From the Manufacturer
From the Manufacturer
Model # WH40
Utilities in many areas of the country offer two electric rates for residential or commercial customers. One rate has the regular daytime electrical rate, the other is the 'off-peak' rate. This 'off-peak' rate provides customers with lower priced electricity during the nighttime and weekend periods. This WH40 Mechanical Water Heater Timer for electrical water heaters by Intermatic allows the customer to shift electricity use into these 'off-peak' timer periods to save utility costs.
- For use in residential, commercial, industrial, military, and school applications.
- CSA listed
Intermatic WH40 Electric Water Heater Timer, Gray
The WH40 is CSA certified and has a 1-year warranty
The WH40 is Intermatic's original 'Little Gray Box' timer. It can provide the homeowner substantial savings on his/her electricity costs. It has heavy duty 40 amp and 10,000 watt ratings. With a convenient external override switch, the WH40 is easy to install and easy to program, with 3 sets of on/off trippers included. This timer is ideal for water heater control of residential, commercial, schools and military facilities. The enclosure is NEMA 1 rated indoor steel and has a lockable hasp, which holds the door closed. There are 3 mounting holes on the back and combination knockouts on the sides, back and bottom of the enclosure. Additional trippers can be purchased for more on/off program settings (Model 156T1978A).
Intermatic is the global leader in energy management solutions. Since 1891, Intermatic has been focused on developing and manufacturing quality products. Known for the 'yellow dial time clock', we have expanded our product offering to include advanced energy control options, occupancy/vacancy sensors, photo controls, LED and HID lighting, surge protection, weatherproof covers, and pool and spa controls. We are a family-owned, customer-focused business with a global vision of product development and innovation.
- Double pole, single throw.
- Convenient external override switch
- NEMA 1 rated indoor steel enclosure
- Additional sets of trippers are available - #156T1978A
Top Customer Reviews
You should have some background in electrical ampacity and wiring basics.
I did have to purchase an additional pigtail.(flex tubing with 3 #10 color coded wires, and 1/2 connectors on each end about 5 feet total length)
The heater had the wiring flex tubing direct from the wall to the top of the heater. The additional material was about 10.75 at the local hardware store.
I unhooked the wiring from the heater and wired it to the timer, then wired the new pigtail to where I had disconnected the original wires.
The timer has knockouts on the bottom for either 1/2 or 3/4 inch connectors so if it will accomodate either one. You most likely will have 1/2" connections.
Make sure you turn off the breaker before you start.
The entire process took about an hour total.
The instructions that come with the timer aren't that great, so if you don't know what you are doing, it won't help much.
The timer comes with 3 sets of on/off clips so you can time it on and off 3 times.
We set it at on at 5 am, off at 8 am, then on at 8 pm off at 10 pm.
So the timer is on 5 hours a day and off 19.
We figgure we will save around 25 dollars a month off the electric bill.
So... it will take at least 2 months to pay for the timer and other materials we bought. If you pay someone to install it, it will take much longer to pay for itself.
So far, it is working properly and so I am satisfied.
The mechanism is very old school & has not changed in years. The clock mechanism becomes very hot from being driven 24 hours/day. I does not appear to be adequate to drive the system contimually. I would recommend purchasing a modern electronic system.
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).
I feel obligated to update my rating from two stars to four. The company's support was outstanding and I bought a replacement. I must admit the the first unit worked perfectly until it malfunctioned and my new unit is just humming along. I'm a satisfied camper.
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!!
Most Recent Customer Reviews
Installed to turn off water heaters during 'Peak' usage times. Installation was simple and quick. Wiring terminals are marked well enough even for this novice electrician to make... Read morePublished 4 days ago by nuclearsax
Yes, have used before. FL Power and Light say that it can save about 8 to 12 dollars a month when used on the water heater.Published 5 days ago by Oliverjim@Hotmail.com (Jim Oliver)
Works great and easy to install (for me at least). Now my water heater does not stay on for nothing.Published 6 days ago by Mary
This unit saved us over $50.00 the first month we had it, running it for 2-- 1/2 hr. time slots. There are only two of us in the house now, and as we put an insulated blanket... Read morePublished 9 days ago by Amazon Customer
Easy to use, easy to program, solid build. The first relay or set of contacts failed within a week, had to bypass them to keep using it.Published 11 days ago by Michael K.