Isotemp 6P4023SPA0100 - 115V/750W SPA 40L Stainless Steel Marine Heater without Safety, Mixing Valve

Isotemp 6P4023SPA0100 Spa 40L Marine Water Heater 115V / 750W (Without Safety Valve & Mixing Valve)

The Isotemp 6P4023SPA0100 Spa 40L (11-gallon) marine water heater is a cost-optimized model designed for systems that rely on external safety and temperature-control equipment. Part of the Isotemp Spa range, it maintains high marine manufacturing standards, including a corrosion-resistant stainless-steel inner tank and a durable polypropylene outer casing.

This version is supplied without a safety valve and without a mixing valve, making it well-suited for vessel installations with centralized or externally installed pressure-relief and temperature-mixing hardware. The 115V / 750W immersion heater provides efficient water heating while keeping power draw low for small to medium marine electrical systems.

Key Features

• 40-liter (11-gallon) Spa-series stainless-steel marine water heater.
• 115V / 750W immersion heating element.
• Stainless-steel inner tank for long-term corrosion resistance.
• Polypropylene outer casing for lightweight structural protection.
• Delivered without safety valve (external overpressure protection required).
• Delivered without mixing valve (external temperature-control system required).
• Compact cylindrical shape for easy installation in marine compartments.

Technical Specifications

Installation and Applications

• Designed for vessels using external temperature-mixing and safety hardware.
• Suitable for medium and large sailboats, motor cruisers and commercial craft.
• Cylindrical form supports horizontal mounting or installation in lockers and engine spaces.
• Ideal for retrofit systems requiring integration with existing hot-water infrastructure.

Included in the Package

• Isotemp Spa 40L stainless-steel water heater (without safety & mixing valves)
• 115V / 750W immersion heater
• Polypropylene outer casing
• Installation and safety documentation

The Isotemp Spa 40L 115V / 750W (without safety and mixing valves) offers a durable, cost-effective and marine-grade solution for onboard hot-water systems relying on centralized or external protective equipment.