Rheem LWD Element Copper 240V 4000W Threaded Accessory
A low-watt-density copper heating element with threaded foldback design, 13.44 in insert length and 4000 W at 208/240 V AC
- Product typeThreaded
- Threaded mount simplifies installation in compatible tanks
- Low-watt density design extends element life
- Foldback shape fits confined heater interiors
- 4000 W output at 208/240 V delivers strong heating
- Copper construction resists corrosion in standard water
Rheem 4000 W Threaded Water Heater Element
This Rheem LWD element is a threaded, foldback copper heating element rated at 4000 W for 208/240 V AC operation. It carries manufacturer part reference 88H40D and fits a range of Rheem water heater models including ELD and ELDS series units. The insert length measures 13.44 in and the element width is 0.26 in.
Suitable for standard residential electric water
Homeowners and technicians replacing a failed element in a compatible Rheem tank will find the correct thread form and power rating here. The element is not approved for potable water use, so installers working on systems that supply drinking water must select a different component.
4000 W at 240 V AC power rating
The single specification that decides fitment is the 4000 W, 208/240 V AC rating combined with the threaded pipe mount. Verify the existing element matches this wattage, voltage and thread type before purchase; mismatched power or connection will prevent correct operation.
How it compares
Measured against everything we stock in Water Heater Parts & Add-Ons, at today’s prices. Recalculated every night.
- Price $19.99
- Cheaper than about 76% of the 85 comparable items (median $163.99).
Specifications
| Product | |
|---|---|
| Brand name | Rheem |
| Product type | Threaded |
Questions about this item
How often will the LWD copper element need replacement compared to a standard-density element?
Low-watt-density copper elements typically last longer than high-watt-density types because the lower surface temperature reduces scale build-up, but actual life depends on local water hardness and usage patterns.
What limits continuous operation of the 4000 W threaded element first?
The 4000 W rating at 208/240 V AC is the thermal limit; sustained operation beyond this wattage will cause the element to overheat and trip the water heater's high-limit safety switch.
How much heat does the 13.44 in fold-back element add to the surrounding space when running all day?
At full 4000 W output the element converts virtually all electrical energy into water heat; only minimal waste heat escapes the tank jacket, so room-temperature rise is negligible.
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