ISOTEMP Spa 25 (6.5-Gallon) Marine Water Heater, 230V/750W

Offering dependable performance and ease of installation, Isotemp Spa Water Heaters are backed by an outstanding warranty: Two years on parts and a full five years on the tank. 

Specifically designed for marine use, Isotemp Spa Water Heaters feature a corrosion-resistant 316 stainless steel inner tank and a durable, non-corroding outer polypropylene shell. Isotherm optimizes water heating performance by locating the engine water heat exchanger as well as the electrical immersion heating element in the lowest part of the tank where the water is coldest in order to ensure equal heating of all the water in the tank. Water inlets and outlets are specially positioned to minimize the mixture of cold and hot water. All Spa Water Heaters include an engine water heat exchanger coil and choice of 115V or 230V operation.

SPA models are offered with a choice of 12 3/8″ or 15 3/8″ diameters. For complete dimensions for all Spa models, see the Spa Dimensional Diagrams. For installation and maintenance, see the Spa Owner’s Manual.

Key Features

• Corrosion-resistant 316 stainless steel inner tank
• Durable, non-corroding polypropylene outer shell
• Designed to quickly heat water
• Choice of 120V or 230V AC operation
• 750W heating element