Honeywell WaterDefense Water Leak Detection Alarm-RWD41 - The Home Depot


Model # RWD41

Internet # 202491357

WaterDefense Water Leak Detection Alarm

Honeywell WaterDefense Water Leak Detection Alarm

This item has been discontinued.
The Home Depot no longer carries this specific product.

$21.98 / each


Model # RWD41

Internet # 202491357

Water escape damage is the 2nd leading cause of home insurance claims nationwide. Be alerted of water leaks in your home with Honeywell's Water Detection Alarm. The Water Detection Alarm's entire cable senses water - it is ideal for use around water heaters, sump pumps, under sinks, behind refrigerators and under dishwashers.

  • 16 times more coverage than a spot detector
  • Effective - it has a loud alarm (80 decibels) and can detect the slightest amount of moisture
  • 4 ft. leak detection cable
  • 6 ft. of leader cable allows alarm unit to be mounted on walls or in another room
  • Cable is expandable up to 240 ft. - the only system that can run around the entire perimeter of a room or basement


Assembled Depth (in.)  2.5 in  Assembled Height (in.)  3.5 in 
Assembled Width (in.)  2.75 in  Product Depth (in.)  1.25 
Product Height (in.)  3.5  Product Width (in.)  2.75 in 
Finish Family  White  Material  Plastic 
Product Type  Water Alarms  Product Weight (lb.)  .4 lb 
Returnable  90-Day 
Warranty / Certifications
Manufacturer Warranty  1 year limited warranty 


Rated 4.5 out of 5 by 21 reviewers.
Rated 5 out of 5 by No More Hidden Mold After having a "secret" leak under our water heater upstairs for over 5 years that no plumber could ever find and our ceiling dowstairs even caved in once we finally fixed the leak using a FLIR camera. To prevent future hidden leaks put one of these things by water heater and by washing machines to make sure we aren't caught off guard by hard to see slow leaks that cause mold to grow. Like a smoke detector but for water. So far so good! March 5, 2013
Rated 5 out of 5 by It worked! I installed this thing about 6 months ago because we had an 11 year old hot water heater in the attic. The alarm went off a couple days ago - for some reason I thought it may be the battery. Sure enough, we had a leak in our hot water heater and the pan had some water. My $25 investment may have saved a great deal of money and ceiling drywall replacement (ie: headache). It works! September 30, 2014
Rated 1 out of 5 by Some fatal design flaws Easy to install the sensor portion, and good allowance of cable to locate the alarm a LITTLE ways away from the sensor. However, there is NO WAY TO TEST the alarm. This is disconcerting. Also, the operation of the lid of the opening for the battery, is not obvious. And, once the box is installed, the lid is impossible to open without removing the box. Which bites if, like I did, you use the enclosed double-stick tape to mount the box on the wall. September 19, 2014
Rated 5 out of 5 by Excellent Product Honeywell has a reputation for producing excellent, high-quality products. This water leak detector is no exception. It exceeded my expectations. It is extremely sensitive. When I tested it, one drop of water on my finger set it off. November 17, 2014
Rated 4 out of 5 by Almost perfect After 3 floods, shocked to come across this. It's a must as my water heater is in the storage room that's part of my house & backs up to my living room & laundry/kitchen. Last flood, 2 years ago raised insurance $500. Never again I pray. So easy to put up, only 4 stars because it's not loud enough. It's at one end of the house when I stay in the middle w/the tv going. I'll most likely get 2 more to add to it. It would get 10 stars if it could be programed into a cell phone. If no one is home to hear it, it's of no use. Unless you get home before the flood is too bad. They need to make it larger, to hold several batteries, whatever will make it a real ALARM but I'm grateful to have it. I'm always home & water heaters aren't made like they used to be. If I only had a garage for the water heater. I recommend it, you may be home when it bursts. If you house is like mine, get 3 & don't forget to change the batteries April 9, 2013
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