--- product_id: 488444370 title: "DERNORD 12V 400W Immersion Heater Submersible Water Heater Element Stainless Steel Heating Element with 1 Inch NPSM Fitting Double U Type" brand: "dernord" price: "$72.22" currency: USD in_stock: true category: "Dernord" url: https://www.desertcart.us/products/488444370-dernord-12v-400w-immersion-heater-submersible-water-heater-element-stainless store_origin: US region: United States of America --- # 12V DC power compatibility 400W rapid heating output 1" NPSM standard fitting DERNORD 12V 400W Immersion Heater Submersible Water Heater Element Stainless Steel Heating Element with 1 Inch NPSM Fitting Double U Type **Brand:** dernord **Price:** $72.22 **Availability:** ✅ In Stock ## Summary > 🔥 Power your water heating with smart, sustainable energy! ⚡ ## Quick Answers - **What is this?** DERNORD 12V 400W Immersion Heater Submersible Water Heater Element Stainless Steel Heating Element with 1 Inch NPSM Fitting Double U Type by dernord - **How much does it cost?** $72.22 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/488444370-dernord-12v-400w-immersion-heater-submersible-water-heater-element-stainless) ## 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" NPSM flange fits standard US water tanks or custom setups with ease. - • **Plug & Play Power:** Seamlessly connects to batteries, solar panels, and wind turbines for eco-smart heating. - • **Versatile Applications:** Ideal for caravans, boats, workshops, biodiesel production, and home brewing. - • **Energy-Efficient Freeze Protection:** Automatically prevents freezing in livestock drinkers and ponds with simple thermostat control. - • **Corrosion-Resistant Stainless Steel:** Electropolished surface ensures durability and longevity in all water types. ## Overview The DERNORD 12V 400W Immersion Heater is a stainless steel, corrosion-resistant heating element designed for 12V DC systems. Featuring a universal 1" NPSM fitting, it integrates effortlessly with batteries, solar panels, and wind turbines to provide efficient water heating and freeze protection across diverse applications including domestic tanks, caravans, and biodiesel production. ## Description Product Features 12V 400W Element : These elements are made from stainless steel to prevent any corrosion so are suitable for use in virtually all types of water tank Product Application → Great for use heating water in domestic hot water cylinders or water tanks in caravans,boats,workshops etc. Can also be used with waste vegetable oil in the the manufacture of biodiesel, and for home brewing etc → Can also be used with waste vegetable oil in the the manufacture of biodiesel, and for home brewing etc → These can also be used to prevent water freezing during winter months in livestock drinkers or raised ponds by connecting one to a large 12v battery recharged by a large solar panel or wind turbine, just use a basic 5 degrees c normally open thermostat and when the water temperature gets near five degrees the heater will automatically come on and warm the water by a few degrees before switching off again, one could also be used in the water storage tank in your loft if its prone to freezing in the winter months NOTES If you have a gas hot water heater you may wish to put an electric unit ahead of it. This way the gas heater is always being fed hot water so it does not turn on as often and for shorter periods of time when it does. If used as a diversion (dump) load, such an element is connected to the batteries via a charge regulator. When the regulator detects that the batteries are fully charged, it diverts the generated electricity to the element which heats water. Technical Details Voltage:12 volts Wattage:400 watts Product Diameter: 8mm Tube length: 175mm Screw Type:1"NPSM Color: White ## 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 | B0BCWFHCG1 | | Best Sellers Rank | #96,694 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #168 in Water Heater Replacement Parts | | Brand Name | DERNORD | | Color | White | | Customer Reviews | 3.5 3.5 out of 5 stars (6) | | Item Length | 175 Millimeters | | Manufacturer | DERNORD | | Material Type | Stainless Steel | | Voltage | 12 Volts | | Wattage | 400 watts | ## Product Details - **Brand:** DERNORD - **Color:** White - **Item Length:** 175 Millimeters - **Material:** Stainless Steel - **Voltage:** 12 Volts ## Images ![DERNORD 12V 400W Immersion Heater Submersible Water Heater Element Stainless Steel Heating Element with 1 Inch NPSM Fitting Double U Type - Image 1](https://m.media-amazon.com/images/I/611pzzn9-XL.jpg) ## Available Options This product comes in different **Size** options. ## Frequently Bought Together - DERNORD 12V 400W Immersion Heater Submersible Water Heater Element Stainless Steel Heating Element with 1 Inch NPSM Fitting Double U Type - Victron Energy SmartSolar MPPT Solar Charge Controller (Bluetooth) - MPPT Charge Controller for Solar Panels - 100V 30 amp 12/24-Volt - Renogy 100 Watt 12 Volt Monocrystalline Solar Panel (Compact Design) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/488444370-dernord-12v-400w-immersion-heater-submersible-water-heater-element-stainless](https://www.desertcart.us/products/488444370-dernord-12v-400w-immersion-heater-submersible-water-heater-element-stainless) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-14*