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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4.9 ★★★★★
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Product Reviews
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Verified Purchase
Eden Rose Bowling
Natrona Heights, US
★★★★★ 4
Great product but choose a size or two up
Size: Large (Pack of 1), Product Packaging: Standard Packaging
Nice quality toy for long lasting and engaging play! One star docked for the sizing—I don't usually expect to need an xl anything for my 45lb border collie but he cant even fit his canine teeth into the large size to ease the jerky reward out in "hard" position but "easy" position he doesn't even tough the toy just grabs the jerky. Got an XL and it has been great for the jerky both easy and hard positioning. The larges I keep around for liquidy and frozen treats to keep the mess contained and they work very well for that.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 12, 2025
D
Verified Purchase
Dog Lover
Pawtucket, US
★★★★★ 5
Truly for Aggressive Chewers
Size: Large (Pack of 1), Product Packaging: Standard Packaging
Excellent product for aggressive chewers. The black Kong doesn't last forever BUT it is the most reliable toy I've used with my 60# pitt mix. I've returned so many toys that were advertised as for this girl's level of enthusiasm that I no longer buy anything else.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026
M
Verified Purchase
Michael Steinmeyer
Carnegie, US
★★★★★ 5
Great toy
Size: Large (Pack of 1), Product Packaging: Standard Packaging
Solid toy
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2026
L
Verified Purchase
Lazychick
Alexandria, US
★★★★★ 5
Great for Excessive Chewers and Eaters
Size: Large (Pack of 1), Product Packaging: Standard Packaging
I decided to get the Kong Extreme toy for my then 9-year-old dog in Sept. 2010, after her older sister passed away a few days before. I figured we both could have used the distraction. I learned ages ago that most toys couldn't hold up against my two Australian Cattle Dogs, since they didn't just happily gnaw on things, they'd try to eat it. In fact, they tried to eat a number of things, from fabrics to meticulously eating the lining off tennis balls and soft balls. Nothing was safe, especially against the youngest, who has some OCD issues. I'd be lucky to see a tough toy last a day, much less a month. Like the rest, I didn't think this toy would stand a chance, but it's still holding up well almost a year later. My dog isn't a strong chewer, like a doberman or pit, but very meticulous. She and her sister would go at something for hours if you let them, until nothing was left. Because of this, I also need to choose soft toys, rather than something hard, because she'll wear her teeth down if you let her. Fortunately, this manages to stand up to her obsessive chewing, but it also doesn't wear the teeth down, which I love. I'm thinking of getting a new one, even though the current could probably last another few months. I'm just now seeing some wear along the seams, despite her every effort to conquer and destroy it. I'm mainly getting it just to be on the safe side, so that I don't risk it falling apart while I'm not watching her, and just for the sake of cleanliness. These are extremely durable and easy to clean. They do have a strong odor when you first open them up, but it fades relatively quickly. I let ours soak it in hot/vinegar water for a while, then rinsed it well and left it out in the sun for a few hours. Seemed to help a little. They can also be loud when dogs chew on them, which can be annoying if you're trying to watch TV, but I find it well worth it, even if my partner doesn't agree during football time. I love the fact that these toys bounce unpredictably, although I would be careful around furniture if you plan to bounce it off the floor or toss it. I got into the habit of using it down our long hallway, referring to it as Dog Bowling, which she loves. She also didn't need food as incentive to get into it (just me playing with it and making it out to be a big deal), which is great, since that just means less cleaning and less weight gain in my book, although I do put treats in it now and then, if my partner and I are leaving the house and plan to be gone awhile. My dog's around around 30 lbs. and is medium sized, but has had no trouble tackling the larger-sized version, which was the only size available through Amazon at the time. I may get the medium-sized toy soon, just because she's reaching 10 and she'll go at it for ages. This is a great toy for obsessive chewers in particular, and I highly recommend it to dog lovers. I just wish we'd found out about them sooner! I'm also happy to report that she has stopped chewing on random things), like blankets and clothing, as much as she used to. If she does start up, it's because she can't find her Kong. I may also get the bone version and will review on that if I do.
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Reviewed in the United States on August 28, 2011
A
Verified Purchase
Amazon Customer
Boise, US
★★★★★ 5
Great buy
Size: Large (Pack of 1), Product Packaging: Standard Packaging
Definitely recommend. My new rescue has chewed though I can’t even tell you how many “indestructible” toys in under 10 minutes. Not this! We’ve had it a few days and she loves it. Hasn’t chewed through it at all and it literally keeps her busy for an hour at the minimum. Would buy again. Great quality for the price and made to last. Perfect for aggressive chewers.
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Reviewed in the United States on April 8, 2026

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