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expiredTattyBear | Staff posted Mar 11, 2026 04:42 PM
expiredTattyBear | Staff posted Mar 11, 2026 04:42 PM

Dewenwils Pipe Heating Cable w/ Built-in Thermostat: 60' $11.90, 30'

$10

$31

67% off
Amazon
19 Comments 11,890 Views
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Deal Details
Dewenwils via Amazon has 30' Dewenwils Pipe Heating Cable w/ Built-in Thermostat for $9.99. Shipping is free w/ Prime or on $35+ orders.

Dewenwils via Amazon also has 60' Dewenwils Pipe Heating Cable w/ Built-in Thermostat for $11.89. Shipping is free w/ Prime or on $35+ orders.

Thanks to Deal Hunter TattyBear & Community Member headman for finding this deal.

Specs:
  • Input Voltage: 110-120V, 50-60Hz, 7W/ft
  • Power Rating: Total Wattage 21W (Only for heating wire)
  • Length: Heating Cable Length 30ft / 60ft, Lead Cord Length 2ft
  • Temperature Switch: 3℃ (37.4℉) on, 10℃ (50℉) off

Editor's Notes

  • About this deal:
    • Please see the original post for additional details & give the WIKI and additional forum comments a read for helpful discussion.
  • About this product:
    • Rating of 4.4/5 from 700+ Amazon customer ratings.
  • About this store:

Original Post

Product Info
Community Notes
About the Poster
Deal Details
Product Info
Community Notes
About the Poster
Dewenwils via Amazon has 30' Dewenwils Pipe Heating Cable w/ Built-in Thermostat for $9.99. Shipping is free w/ Prime or on $35+ orders.

Dewenwils via Amazon also has 60' Dewenwils Pipe Heating Cable w/ Built-in Thermostat for $11.89. Shipping is free w/ Prime or on $35+ orders.

Thanks to Deal Hunter TattyBear & Community Member headman for finding this deal.

Specs:
  • Input Voltage: 110-120V, 50-60Hz, 7W/ft
  • Power Rating: Total Wattage 21W (Only for heating wire)
  • Length: Heating Cable Length 30ft / 60ft, Lead Cord Length 2ft
  • Temperature Switch: 3℃ (37.4℉) on, 10℃ (50℉) off

Editor's Notes

  • About this deal:
    • Please see the original post for additional details & give the WIKI and additional forum comments a read for helpful discussion.
  • About this product:
    • Rating of 4.4/5 from 700+ Amazon customer ratings.
  • About this store:

Original Post

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+26
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Top Comments

Relik
351 Posts
226 Reputation
Edit: I'm noticing that many cables they have seem to be stating 21 watts of power usage. The input voltage point on this cable says 7W/ft but that conflicts with their other statements.

I'll hope that this uses 7 watts per foot for purchasers sake, but these are big oversights that tell me the brand is questionable.

Update: There are some very bad reviews people. I'm unable to attach the photos of the charred house. It's unfortunate to see so many people putting their property at risk. I wouldn't take this product for free.

Amazon Customer - Almost burnt my house down - avoid at all cost

I installed this product correctly, following all of the manufacturers instructions. The cable was not overlapping and was more than 13mm away from any "combustible" surface, which is the wood siding in this instance. Within five hours of installation and use, it caught fire and spread to the exterior of our home. We smelled smoke coming under the laundry room door, and opened the door to find the room, which is on the interior wall of where the cable was installed, completely filled with this smoke. We immediately extinguished the fire, but the product had already done damage to our homes exterior, ruined the plumbing into the wall, and filled our house with toxic smoke from burning plastic and insulation. Avoid this product at all costs. After contacting Amazon and waiting on hold multiple times, they dropped my call twice while "I was being connected to the right customer service team"

Mike - 18 FEET OF DESTRUCTION
This melted my my pvc plumbing and nearly started a fire. When I tried to contact product support, I was told by a robot its past its return window. Had to contact Amazon just to get a return started. I'm out over $200 in destroyed plumbing. This cheap one is dangerous. Bought other brands, no problems.
Relik
351 Posts
226 Reputation
This says



Power Rating: Total Wattage 21W (Only for heating wire )
Length: Heating Cable Length 30ft, Lead Cord Length 2ft

That's 21 watts over 30 feet = 0.7 watts per foot. For comparison, an EasyHeat Pipe Heating Cable on Amazon is 7 watts per foot (the industry standard), 10 times as much power. 210 watts for a 30 foot cable.

This is incredibly low wattage and I certainly wouldn't consider this for a 30 ft pipe run. You would have to spiral wrap this over a 4-6 ft pipe length for it to have any utility and success at all. Use this at your own risk - there's a reason it's $10. The EasyHeat 30' cable is $33 and it actually will heat/protect 30 feet of pipe - you are told not to spiral wrap it because it will produce too much heat per foot.

20 Comments

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Mar 12, 2026 03:25 AM
2,164 Posts
Joined Nov 2014
Mark42mcMar 12, 2026 03:25 AM
2,164 Posts
Great idea. I would have purchased this item but I needed it a month ago when everything was frozen.
Mar 12, 2026 10:39 AM
15 Posts
Joined Sep 2013
EyeDeal_ShopperMar 12, 2026 10:39 AM
15 Posts
Looks like 60' is dead
Mar 12, 2026 02:34 PM
1,131 Posts
Joined Aug 2008
evilmomoMar 12, 2026 02:34 PM
1,131 Posts
Both options out of stock
Mar 18, 2026 05:21 PM
160 Posts
Joined Oct 2023
CoffinSupply1Mar 18, 2026 05:21 PM
160 Posts
Quote from Relik :
Edit: I'm noticing that many cables they have seem to be stating 21 watts of power usage. The input voltage point on this cable says 7W/ft but that conflicts with their other statements.

I'll hope that this uses 7 watts per foot for purchasers sake, but these are big oversights that tell me the brand is questionable.

Update: There are some very bad reviews people. I'm unable to attach the photos of the charred house. It's unfortunate to see so many people putting their property at risk. I wouldn't take this product for free.

Amazon Customer - Almost burnt my house down - avoid at all cost

I installed this product correctly, following all of the manufacturers instructions. The cable was not overlapping and was more than 13mm away from any "combustible" surface, which is the wood siding in this instance. Within five hours of installation and use, it caught fire and spread to the exterior of our home. We smelled smoke coming under the laundry room door, and opened the door to find the room, which is on the interior wall of where the cable was installed, completely filled with this smoke. We immediately extinguished the fire, but the product had already done damage to our homes exterior, ruined the plumbing into the wall, and filled our house with toxic smoke from burning plastic and insulation. Avoid this product at all costs. After contacting Amazon and waiting on hold multiple times, they dropped my call twice while "I was being connected to the right customer service team"

Mike - 18 FEET OF DESTRUCTION
This melted my my pvc plumbing and nearly started a fire. When I tried to contact product support, I was told by a robot its past its return window. Had to contact Amazon just to get a return started. I'm out over $200 in destroyed plumbing. This cheap one is dangerous. Bought other brands, no problems.
holy smokes

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