The Bosch Therm 520 and 330 Series hot water heaters are perfect for family households. No electricity is required for ignition, ensuring proper starting in any condition. While providing endless hot water, it saves money because it only heats water when you need hot water. Efficient and cost-effective these units are an excellent choice for the smaller household!

• 78%+ thermal efficiency
• Endless hot water
• Minimum activation flow rate of 0.5 gallons per minute
• High to low temperature control
• Available in NG and LP models
• Vents with galvanized B vent – natural draft
• Built for durability and serviceability with 15-year warranty and 20+ year life expectancy
• Ignition Requires No Electricity