Add $175.00 for FREE shipping
Learn More!
Timers Type
Wall Mounted Timers
# of Loads
1 Load
Maximum Timed Events
1 Event
Maximum Load
40 Amps
Maximum Time Duration
Up to 24 hours
208V AC
240V AC
Ease of Installation
Intermediate (Installs < 60 minutes)
Other Ways to Shop
In Stock
On Sale
Order the Smarthome Catalog

Why Pay for Hot Water When You Don‘t Need It?
Intermatic WH40 Water Heater Timer
Intermatic WH40 Water Heater Timer
Intermatic WH40 Water Heater Timer
Item# 48751
Price: Normally $105.00 
Hot Deal $55.66
Free shipping on orders over $175 - See Details


  • Switch Rating - 40 Amp Resistive
  • DPST Switch
  • 208-240 VAC
  • External override switch

Essential Info

The Intermatic WH40 Water Heater Timer provides a convenient external override switch. 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 "off peak" rate. The off peak rate provides customers with "lower-priced" electricity during the nighttime and weekend periods. These time switches allow the customer to shift electricity use into these off-peak time periods in an attempt to save utility costs.

The Water Heater Timer will repeat a preset schedule daily. An external manual lever will allow the user to turn the water heater on and off ahead of schedule. Then, the Timer will resume the preset program at the next scheduled on or off operation.

If you have an electric water heater, you can save an additional 5%-12% of energy by installing a timer that turns it off at night when hot water isn’t being used or off during your utility’s peak demand times. Also, your utility company may offer an incentive to customers who install control devices that shut off electric water heaters during peak demand periods. Contact your electric utility to see if they offer a Demand Management Program. Under this type of program, the utility would offer "time of use" electricity rates that vary according to the demand on the system. Higher rates are charged during peak times and lower rates are charged during off-peak times.


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


3 Ratings
5 star: 100%  (3)
4 star: 0%  (0)
3 star: 0%  (0)
2 star: 0%  (0)
1 star: 0%  (0)
Average Customer Rating
(3 customer ratings)
Share your thoughts with other customers
Danny -- norman, Oklahoma   5/23/2014
This a very good product I purchased 2 of these 6 years ago and they are still working to keep my water heaters off during peak electric rate times. I bought them at my local Lowe's and they are still priced at just under $50.
WILLIAM -- marengo, OH   1/31/2013
The item is doing what I wanted

Related Items

Ice Machine Auto Shut-Off Kit       
Ice Machine Auto Shut-Off Kit       
Sign-up for Exclusive Email offers 
How to Order Track Your Package Shipping Returns Contact Us Customer Service Retail Store
Getting Started Learning Center FAQ Dealers Customer Testimonials Affiliate Program
About Us INSTEON Press Awards Employment Guarantees Security & Privacy
Free Catalog Email Newsletter Forum RSS Site Map
Have questions? Call us at 800-762-7846 (Mon-Fri 5am-7pm and Sat 6am-3pm PT) or send us a message
Place your order by 3pm PT for same day shipping
Copyright 1995-2014 SMARTHOME™
Verisign Secure Site PayPal Acceptance Mark