Isotherm Isotemp 20 Liter SPA Water Heater Stainless Tank (5.3 USG)View all products in Hot Water Heaters

Indel Webasto Isotherm Isotemp SPA Water Heater 20L 5.3 USG

The line of SPA Water Heaters was designed to meet the needs of boat builders and owners wanting a higher quality water heater, rather than the aluminum units commonly found on new boats.

The SPA features the highest marine quality standards while providing an optimized cost /quality ratio, with a polypropylene shell and safety mixing valve.

The SPA line compliments the Isotemp range of stainless steel water heaters universally recognized as the best in the industry.

Thermostat controlled mixing valve extends the volume of hot water and protects against accidental scalding.

All Isotemp water heaters use two thermostats: a temperature thermostat and a safety thermostat designed to trip in the event the tank is run dry.

The 115V AC, 750 Watt element provides high performance with a low power draw.

Orientation: Horizontal or Vertical Mount

Heat Exchanger: Front

• Exterior casing/jacket made of high-quality polypropylene insulation
• Inner tank made of AISI 316 stainless steel
• Includes safety relief valve, thermostatic mixing valve
• Robust design and manufactured to highest-quality marine standards for long service life
• Immersion heating element specially designed to heat water at the bottom of the tank
• Aluminum mounting brackets adjustable for deck or bulkhead installations
• Extra-thick insulation for low loss keeps water at a useable temperature for up to 24 Hours
• Extra-long corrugated coils for high heat exchange efficiency
• All Isotemp water heaters come standard with a mixing valve.
  • The mixing valve regulates the temperature of the water coming out of the tank to prevent scalding
  • Extends the amount of usable hot water available
• The 115V AC heating element is 750 watts, which won't overload generators or trip dock breakers
• All Isotemp products are CE certified and manufactured in ISO certified facilities
• A 5-year limited warranty covers all Isotemp tanks against leakage due to manufacturing defect or corrosion and a 2-year warranty on all other parts