---
product_id: 24106484
title: "DERNORD Immersion Heater"
brand: "dernord"
price: "€ 38.39"
currency: EUR
in_stock: true
reviews_count: 9
category: "Dernord"
url: https://www.desertcart.ie/products/24106484-dernord-immersion-heater
store_origin: IE
region: Ireland
---

# 300W dual-element power for flexible heating 12V DC compatible - perfect for off-grid power 1" NPSM flange fits standard US tanks DERNORD Immersion Heater

**Brand:** dernord
**Price:** € 38.39
**Availability:** ✅ In Stock

## Summary

> 🔥 Power Your Hot Water, Anywhere ⚡

## Quick Answers

- **What is this?** DERNORD Immersion Heater by dernord
- **How much does it cost?** € 38.39 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/24106484-dernord-immersion-heater)

## Best For

- dernord enthusiasts

## Why This Product

- Trusted dernord brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Universal Fit:** 1-inch NPSM flange matches most US water tanks and custom setups for hassle-free installation.
- • **Waterproof Seal:** Includes flexible silicone washer for leak-proof, long-lasting performance.
- • **Off-Grid Ready Power:** Seamlessly integrates with batteries, solar panels, and wind turbines for eco-smart heating.
- • **Premium Stainless Steel:** Electropolished surface ensures durability and corrosion resistance in any environment.
- • **Dual-Element Flexibility:** Configure for half or full load to optimize energy use and extend component life.

## Overview

The DERNORD 12V 300W Immersion Heater is a robust stainless steel submersible heating element designed for off-grid energy systems. Featuring a dual U-type element with a 1-inch NPSM flange, it fits standard US water tanks and supports flexible power configurations (12V or 24V). UL and cUL safety listed, it includes a silicone sealing washer for waterproof reliability, making it ideal for solar, wind, and battery-powered water heating solutions.

## Description

DERNORD 12V 300W Immersion Heater Submersible Water Heater Element Stainless Steel Heating Element with 1 Inch NPSM Fitting Double U Type - desertcart.com

Review: Versatile and useful product for solar and wind turbine installations! - I have used these for years and never had one fail. With the two elements, they can be configured for half-load (one element), full load 12V (factory config with parallel jumpers) or full load 24V (move jumpers to series the elements). As such, they are perfect dump loads for solar and wind turbine use and can store energy as hot water. The 1" NPT fittings fit many common water heaters.
Review: Not 300 watts @12v - This is a great option for heating water in my car rooftop solar tube. Fit is excellent. ABS 4x4x2 fitting with PVC adapter/reducer and threaded galvanized reducer. I test ran with one element connected. It drew 175 watts. When I connected the second it drew 350 watts. Thought folks should know actual power usage.

## Features

- 12v DC heater connects with batteries, solar panels, hydroelectric generators and wind turbine dump
- 1" NPSM flange fits USA standard water tank or your own custom heater tank
- UL and cUL listed to the safety standards
- Stainless steel surface has electropolish
- Supplied with silicone sealing washer which is flexible and waterproof

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B017VT68XA |
| Best Sellers Rank | #131,578 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #235 in Water Heater Replacement Parts |
| Brand Name | DERNORD |
| Color | Silver |
| Customer Reviews | 4.1 4.1 out of 5 stars (118) |
| Item Length | 175 Millimeters |
| Item Weight | 11 Ounces |
| Manufacturer | DERNORD |
| Material Type | Stainless Steel |
| UPC | 717080640254 |
| Unit Count | 1.0 Count |
| Voltage | 12 Volts |
| Wattage | 300 watts |

## Product Details

- **Brand:** DERNORD
- **Color:** Silver
- **Item Length:** 175 Millimeters
- **Material:** Stainless Steel
- **Voltage:** 12 Volts

## Images

![DERNORD Immersion Heater - Image 1](https://m.media-amazon.com/images/I/51hj+VEp5mL.jpg)
![DERNORD Immersion Heater - Image 2](https://m.media-amazon.com/images/I/51hsodamlUL.jpg)
![DERNORD Immersion Heater - Image 3](https://m.media-amazon.com/images/I/51FYnsu4YhL.jpg)
![DERNORD Immersion Heater - Image 4](https://m.media-amazon.com/images/I/51e+LFS2OhL.jpg)
![DERNORD Immersion Heater - Image 5](https://m.media-amazon.com/images/I/51aEnfHyyIL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Will this heater work for a 450 gal tank to keep water from freezing?**
A: Most likely NOT, Is the tank indoors or outdoors? you will need at least a 800watt element, make sure yo have a thermostat to control the temp...

**Q: I will be connecting this directly to my solar panel. My solar panel puts out 12-21 volts. Will 21v damage the element?**
A: The heater is actually two twelve volt elements connected in parallel by factory jumpers. Much of the time, this load would pull down a 300 watt panel to very low voltage resulting in poor heating. You will probably find the higher voltage and lower amps of putting the elements in series (change the factory jumpers) across your panel yields better results (heating) and solves the possibility of damaging the elements. The heater then becomes 24 V and 300 W.

**Q: What is the resistance of the element aka how many ohms is it**
A: The element which is made of sus304 has 0.48 ohms. Thank you

**Q: what size bulkhead do folks use for this? Any links to one?**
A: 12 volt 300 watt will take a long time to heat up i use a 48 volt 1000 watt element with batterys

## Customer Reviews

### ⭐⭐⭐⭐⭐ Versatile and useful product for solar and wind turbine installations!
*by T***Y on December 15, 2019*

I have used these for years and never had one fail. With the two elements, they can be configured for half-load (one element), full load 12V (factory config with parallel jumpers) or full load 24V (move jumpers to series the elements). As such, they are perfect dump loads for solar and wind turbine use and can store energy as hot water. The 1" NPT fittings fit many common water heaters.

### ⭐⭐⭐⭐ Not 300 watts @12v
*by Y***N on September 4, 2022*

This is a great option for heating water in my car rooftop solar tube. Fit is excellent. ABS 4x4x2 fitting with PVC adapter/reducer and threaded galvanized reducer. I test ran with one element connected. It drew 175 watts. When I connected the second it drew 350 watts. Thought folks should know actual power usage.

### ⭐⭐⭐⭐⭐ 100%
*by R***T on May 7, 2019*

Works perfect. Great pruduct

## Frequently Bought Together

- DERNORD 12V 300W Immersion Heater Submersible Water Heater Element Stainless Steel Heating Element with 1 Inch NPSM Fitting Double U Type
- Beduan 1" Female Bulkhead Water Tank Connector Stainless Steel Thru-bulk Fitting
- DERNORD Cast Pipe Fitting Stainless Steel 304 Hex Locknut NPT Female 1" (Pack of 1)

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-03-31*