Webasto Isotemp Slim Square Electric Hot Water Heater
SKU: 78260356019

Webasto Isotemp Slim Square Electric Hot Water Heater

Sale price$567.90 Regular price$631.00
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Ships within 48 hours · Estimated delivery Jul 7 - Jul 12

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For Your Every Summer RSVP, with Code: SUMMER15

Description

Webasto Isotemp Slim Square Electric Hot Water HeaterThis isnt any old hot water heater, these heaters are extremely efficient, effective, reliable, AND hot! Stay with us here and well tell you why. First, you can heat your water simply by running or driving your van! This hot water heater can heat water by using your vans coolant lines or by using the 750 watt (120 V) electric element off your inverter and battery bank when youre not driving. Second, these heaters are marine grade so they can withstand

This isn’t any old hot water heater, these heaters are extremely efficient, effective, reliable, AND hot!
 
Stay with us here and we’ll tell you why.

First, you can heat your water simply by running or driving your van! This hot water heater can heat water by using your van’s coolant lines or by using the 750 watt (120 V) electric element off your inverter and battery bank when you’re not driving.

Second, these heaters are marine grade so they can withstand all the elements. Stainless steel, built-in linings, as well as efficiently designed tubings and fittings which keep everything safe from corrosion. This is the only square profile Slim model which can make it easier to install into tight spaces in your van build.

Lastly, these heaters are effective. While a lot of hot water heaters have their own implied time limit, (hopefully it’s over 10 minutes.) these heat from the bottom and have tightly insulated fittings to ensure all that hot water stays hot, doesn’t mix in with the dreaded chilly counterparts, and keeps heating from the bottom up. 

If you want hot water with quality, and more importantly quantity, this is our first pick. 

Want some help with the install? Save yourself hours of research and multiple trips to the plumbing store, by adding our Install Kit for the Webasto / Isotemp Hot Water Heater!


Key Features & Benefits:

  • Most Efficient Water Heater - Drive around, get heat, repeat. This could be the start of a great theme song! Seriously though, this heats by driving your vehicle, saving you both electricity and time while waiting on a shower.  
  • Consistent Temperatures - You may be concerned about your water not heating enough, fair, but too hot is a real thing as well when you are in a hurry. Burns aren’t great for one, but this comes with a thermostat mixing valve so you and the kiddos won’t even have to think about that. 
  • High Performance and Efficiency - Extra thick insulation and well-thought-out fittings keep this heater performing as it should.

Dimensions & Specifications:

  • 4.2 US Gallons / 19 Litres
  • Stainless-steel AISI 316 inner tank
  • Extra thick insulation for high performance.
  • Outer casing made of high-quality polypropylene.
  • 1/2” NPT water connections.
  • The thermostat mixing valve protects against scalding and delivers consistent temperatures at the faucet.
  • Standard 750 watt immersion heating element heats the water quickly but will not overload generators or dock breakers.
  • 6 bar safety valve
  • 5-year limited manufacturer warranty

More Information:

Check out this article by Vanlife Outfitters for more info!

Full Details of the Install Kit for Webasto Isotemp Hot Water Heater
Select this add-on with your tank purchase and save $29 vs buying separately!

Isotemp-Spa-Manual

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 78260356019

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★★★★★ 5
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Reviewed in the United States on May 30, 2026
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I am so glad there was a 20ft option. Our house is 104 years old and sockets were very scarce. I guess when we updated the electric we should have added more sockets lol I have a desktop Coca-Cola fridge and I run a desktop Vornado fan year round. So this was the perfect length to plug these 2 items in. I liked that this has a large extension cord on it. Feels very furable and that it has more meat in it yo protect my items vs the thin corded ones. It also has places to charge USB or USB C. Love the design a lot. Having the prongs turned to add from side works perfect and leaves more room for additional plugs. Very portable and no noise whatsoever.
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Reviewed in the United States on April 12, 2026
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Reviewed in the United States on May 26, 2026
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Kimberly
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★★★★★ 5
Perfect for the bathroom
Color: Dark Brown, Size: 15.7 inch, Color: Dark Brown, Size: 15.7 inch
I recently installed the these floating shelves with Wire Storage Basket, and I'm genuinely impressed with their blend of style and practicality. The shelves were easy to mount, and the included hardware felt sturdy, ensuring they're securely in place. Right off the bat, I noticed the quality of the materials; the wood has a nice finish, and the wire basket is well-constructed, promising durability. Functionality is where these shelves truly shine. The wire basket is perfect for storing smaller items, keeping them organized and within easy reach, while the shelf space is great for displaying decorative pieces. They've helped me declutter my space and add a touch of rustic charm at the same time. Aesthetically, these shelves look great in my bathroom. Overall, these floating shelves have exceeded my expectations, offering a stylish and functional storage solution that's built to last.
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LongTrailman
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★★★★★ 5
Looks great and holds firm.
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