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Internet #203557614

Model #WH40DL3

Store SKU #700794

40-Amp 240-Volt Electric Water Heater Time Switch

  • Convenient external override switch
  • NEMA 1 rated indoor steel enclosure
  • Residential, commercial, industrial, military,school applications
  • See More Details

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Product Overview

The WH40 Mechanical Water Heater Time Switch regulates electric water heaters. Utilities in many areas of the country offer two electric rates for residential or commercial customers. One rate has the regular daytime 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 time switch allows the customer to shift electricity use into the 'off-peak' time periods in an attempt to save utility costs.
  • Double pole, single throw
  • Convenient external override switch
  • NEMA 1 rated indoor steel enclosure
  • CSA listed
  • For use in residential, commercial, industrial, military, and school applications
  • Additional sets of trippers are available - #156T1978A

Info & Guides

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Specifications

Dimensions

Product Depth (in.)
3
Product Height (in.)
7.8
Product Width (in.)
5

Details

Commercial/Residential
Commercial,Residential
Finish Family
Gray
Material
Metal
Product Type
Timer
Product Weight (lb.)
2.4
Returnable
90-Day

Warranty / Certifications

Manufacturer Warranty
1 year

Questions & Answers

22Questions29Answers

The plastic flap inside, that lifts up which hides the voltage cables, has the number 124T1949 on...

Asked by Barbs August 20, 2019
1
Answer

No. The number on my times is 124T1952-1

can i use just the 110 volt side? for 110 appliance?

Asked by rich March 29, 2019
3
Answers

Yes.

Will it work with a neutral wire? I wired it 240V with two hot wires and a ground, but when I tur...

Asked by Killa March 27, 2018
5
Answers

Yes. The clock needs a neutral wire for it to work when the power output is turned off.

Do we really save on our electric bill ? I just installed this timer 5 days ago and I do a daily...

Asked by BankruptinPA November 1, 2017
1
Answer

It does save and we also have the electric company auto-disconnect. I have the timer set to be on only 2-3 hours in AM and 2-3 hours in PM. Don't have current figures to quote, but checked it after first installing 25 years ago and it cut heater usage drastically then.

Have much have you saved on electric bill using a timer?

Asked by BankruptinPA October 29, 2017
1
Answer

It's hard to say, I've always setup and used the water heater timer from the start. If I don't use the water heater timer, my electric bill will be high. It's worth it, to install the water heater timer, if you want to save money. Turning on the water heater, when you need the hot water, then turning it off. That's what I do to keep my electricity bill cost low. If you want to know the difference, check your electricity bill without the water heater timer. Then install the water heater timer to see the difference.

Can you hook up more than one item at a time as long as you don't exceed the maximum amp draw

Asked by Boardcutter October 10, 2017
3
Answers

yes

Does using a timer really safe you any money in power cost?

Asked by AL September 23, 2017
6
Answers

For us, it is not an issue of saving money. We are off-grid, and we only want the water heater to run during peak solar output at mid afternoon. This lets us control when the water heater turns on, if needed.

WHY DO TRIPPERS KEEP BENDING, RENDERING THEM USELESS

Asked by Joseph September 22, 2017
4
Answers

cause the timer is Crap , just install a manual switch

why are the white cables connected differently out the box than what is shown on the diagram. My ...

Asked by migram August 1, 2017
2
Answers

You need to follow your original wire connection, by taking a picture with your cellular phone to install the new water heater timer. It comes with extra tripper and pins, which you can hand tighten to the timer dial to turn it on and off. If, you are not sure about the wire connection, ask a electrician.

I want to use this to turn on small water pump.I have one on my hot water heater for over 20 year...

Asked by Cav May 18, 2017
3
Answers

You need to try and connect it to see if it works, use the tripper and pins that come with the timer to set the amount of time, you want to set it.

40-Amp 240-Volt Electric Water Heater Time Switch - page 2

Customer Reviews

  • 4.4
    out of 112 reviews
  • 86% recommend this product
Filter by:
Showing 1-10 of 112 reviews
The Intermatic 40-Amp time is perfect for our water heater...
The Intermatic 40-Amp time is perfect for our water heater and pool chlorinator needs. We used 2 of them. Wiring is straightforward, and available knockouts met our needs for interfacing with conduit.
by DiviSTX
Accidentally ordered different brand - my error. Upon realizing this, ordered the Intermatic to r...
Accidentally ordered different brand - my error. Upon realizing this, ordered the Intermatic to replace an old one. Installation was literally a snap. No rewiring needed, after unhooking the wires, just snapped out the old unit, snapped the new one into the older housing and re-hooked the wires. Thankful that in 30 years, the units were virtually identical because I was not looking forward to having to mount the replacement on a concrete wall and re-run new conduits, etc. Thanks to Home Depot for continuing to stock an old, reliable brand. And further thanks for the ease of ordering via internet, so all I had to do is walk in and put my order number into the locker. No hassle either in returning the other brand that I didn't need. This is especially helpful as I get older and less able to physically walk up and down aisleways.
by jlb
1 person found this helpful
Overall I like the timer. Two things though. I have used one at another home for eight years with...
Overall I like the timer. Two things though. I have used one at another home for eight years with no problems. The only criticism I have is the timer is noisy!!! The old one was noisy and the new one I bought last month month is just as noisy. You can hear the timer running. The second thing is the ground wire connection requires the wire to be bent around the screw. On the other terminal connections you don't have to bend the wire. You can leave the wire straight and insert it in the connection and tighten the screw. Thanks
by Edgewater
2 people found this helpful
Easy to install
Easy to install
by PP1
As expected and helps to save on energy bills.....
As expected and helps to save on energy bills..
by Sama123
Good Price on clearance, about 1/2 off.
Good Price on clearance, about 1/2 off.
by Dan
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
by HomeDepotCustomer
Easy to install and accurate times as set....
Easy to install and accurate times as set.
by Doug
The timer was easy to install and functions as designed....
The timer was easy to install and functions as designed. It was easy to program as well. Will save me $ on my electric bill.
by StevieB
At the location I visited, Atlantic & Girvin, Jax, Fl. , Only two of this item were available. Bo...
At the location I visited, Atlantic & Girvin, Jax, Fl. , Only two of this item were available. Both packaged previously opened. Obviously been returned, one had the guts exchanged, the other had all the knockouts removed. I wasn't happy!
by floydee
Showing 1-10 of 112 reviews