Knox Sales Company S235-BAG Water Heater Element 3500W 240V

Product Description

The KNOX SALES COMPANY S235-BAG is a screw-in replacement heating element designed for residential and light-commercial water heaters. Operating at 3500 watts and 240 volts, this element threads directly into the water heater tank at a standard fitting port, converting electrical energy into heat to warm the stored water supply. It is installed by licensed plumbers or HVAC technicians during routine water heater servicing or when an existing element has failed due to scale buildup, burnout, or corrosion. The screw-in mounting style simplifies removal and reinstallation compared to flange-style elements.

This element is suited for electric storage tank water heaters in residential homes and light-commercial settings where a 3500-watt, 240-volt screw-in element is the specified replacement. It is commonly found in lower-watt-density applications where reduced scale formation and longer element life are priorities. Plumbers and water heater technicians stock screw-in elements as standard service inventory for quick replacement calls.

Key Features

• Screw-in mounting design for straightforward removal and reinstallation
• 3500-watt output suitable for standard residential storage water heaters
• 240-volt single-phase operation compatible with typical residential electrical service
• Replacement-ready design for fast field service

Compatibility

Designed as an OEM-style replacement screw-in heating element for electric storage tank water heaters requiring a 3500-watt, 240-volt screw-in element.

Installation Notes

Installation should be performed by a licensed plumber or qualified water heater technician. Before replacing the element, shut off electrical power to the water heater at the breaker and close the cold-water supply valve, then drain sufficient water from the tank to expose the element port. Use an element wrench for removal and installation, and inspect the gasket or O-ring seat before threading in the new element to ensure a watertight seal.

Technical Specifications

• Wattage: 3500 watts
• Voltage: 240 volts
• Mounting Type: Screw-in

Standard Information

• Brand: KNOX SALES COMPANY
• Manufacturer Part Number: S235-BAG