Durawatt is an emission-free, energy-efficient electric water heater with storage capacity up to 750 gallons, and it can support a wide range of building electrification and decarbonization projects.

Whether as a stand-alone, fully electric water heating plant, in combination with gas-fired water heaters for a versatile energy mix, or in a heat pump water heating system for backup, recirculation and storage, Durawatt is an ideal choice to meet local codes and regulations effectively.

Durawatt offers a durable, reliable electric water heating solution that is simple to maintain. The AquaPLEX storage tank, fabricated with duplex stainless steel, is highly corrosion-resistant and allows for higher storage temperatures,
while the design of individual incoloy sheathed heating elements simplifies maintenance and protects from damaging corrosive media.

Features and Benefits

• 9kW to 234kW input (~31 MBH to 799 MBH)
• Custom options available upon request 
• 98% thermal efficiency  
• Customized heaters with higher inputs
• Maximum kW varies by tank (consult submittal documents)
• Heating elements can be energized in up to 10 stages
• 480V 3-phase standard construction
• Optional voltages: 208/1, 240/1, 208/3, 240/3, 380/3, 600/3
• Modbus connectable electronic operating controls

AquaPLEX Corrosion Protection

• Highly durable AquaPLEX^® engineered duplex stainless steel storage tank
• Corrosion-resistant in potable water at any temperature
• Highly resistant to chloride stress corrosion cracking
• No lining required
• Non-ferrous, removable tank connections
• No anode rods required or used

Warranty

• 25-year AquaPLEX tank and heat exchanger corrosion warranty (15 years full, 10 years prorated)
• One-year parts warranty
• First-year service policy (freight and labor coverage)
• Long-life service policy (optional)

Certifications

• Meets ASHRAE 90.1-2010
• Heaters qualify for LEED certification
• ETL listed to ANSI/CSA safety standards
• FM compliant
• ASME, section IV, part HLW stamped and National Board Registered

Custom Fabrication:

• ASME section VIII, high pressure and/or high temperature (>160 psi)
• ASME heaters for RO or de-ionized water
• Additional energy sources in same tank, including gas, oil, steam, solar or boiler water
• Tank sizes available up to 3000 gallons
• Higher input available up to 360 kW depending on tank size

*Higher kW inputs and larger tank sizes available