Why is this considered a high watt rather than a low watt density element? What is the length and thread size?

The heater with 1 inch NPT flange has 350mm tube length. and it has 5500w wattage.

Whirlpool model e2f40rd045v. says for 1 phase 240v, 4500 for lower element. will this element work with my water heater?

It depends on whether your existing element is a screw in type or a bolt on type. This is a screw in type element. So if your water heater is a 240 volt with screw in elements then it will work.

Will this fit Ruud pe-30 d hot water heater?

Yes. It's 100% compatible with all water heaters that have ever been made. Including European models which use metric water flow.

I have a 240v hydro turbine that produces 1600w. Will this element work for me

We think you shoud use the lower power heater which is smaller than 1600w

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DERNORD 240V 3500W Foldback Water Heater Element Screw-in Heating Element

DERNORD 240V 3500W Foldback Water Heater Element Screw-in Heating Element

Product ID: 34680625

Details

Brand
DERNORD
Color
steel
Material
Stainless
Voltage
240 volts
Wattage
3500 watts

⚡3500W high power output

🔩Foldback design for max heating surface

🛠️Easy install fits most US models

€ 52.44

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Description

🔥 Heat smarter, not harder with DERNORD’s foldback power!

BUILT TO LAST - Crafted from durable stainless steel to resist lime buildup, dry firing, and sand damage.
HARD WATER HERO - Engineered to withstand tough well water conditions, extending element lifespan.
POWERHOUSE PERFORMANCE - Delivers a robust 3500W at 240V for rapid heating efficiency.
PLUG PLAY INSTALLATION - Fits most American water heaters seamlessly, saving you time and hassle.
SPACE SMART FOLDBACK DESIGN - Folded element maximizes heat transfer while minimizing length—perfect for compact setups.

The DERNORD 240V 3500W Foldback Water Heater Element is a stainless steel heating element designed for efficient, durable water heating. Its foldback design maximizes heated surface area while minimizing length, ensuring compatibility with most American water heaters. Resistant to dry firing, lime deposits, and sand damage, it’s ideal for hard water environments and easy to install, making it a reliable upgrade for your water heating needs.

Specifications

ASIN	B018S4AR52
Best Sellers Rank	#141,521 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #257 in Water Heater Replacement Parts
Brand Name	DERNORD
Color	steel
Customer Reviews	4.2 4.2 out of 5 stars (53)
Item Weight	1.6 ounces
Manufacturer	DERNORD
Material Type	Stainless Steel
Model Number	DERNORD-22
Number of Items	1
Number of Packs	1
Part Number	DERNORD-22
UPC	717080640377
Unit Count	1 Count
Voltage	240 volts
Wattage	3500 watts

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€ 52.44

Duties & taxes included

In stock

Sold byAmazon SlovakiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Slovakia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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