Lifetime warranty. 18 kW electric tankless water heater provides efficient, continuous on demand hot water. The Opti18+ is the only water heater with patent pending ultrasonic flow sensing technology providing quiet, efficient and smart control. With advanced power modulation, built in diagnostics and wireless compatibility the Opti18+ heats to within 1° of set temperature(plus or minus). Heat up to 3.7 gallons per minute (gpm) to 105°F given an inlet water temperature of 72°F. It supports a 2-bathroom home in warm climates or acts as a point of use in colder climates. Dry-fire protection prevents premature element failure for worry-free installation. The Opti18+ comes with a 25-year residential warranty and a 5-year commercial warranty. Covers all components and ground shipping. For more information on installation, best practices and the warranty, please use the Additional Resources links.
Lifetime Guarantee - 25 Year Limited Warranty, best warranty in the category
Delivers continuous hot water for 2 showers and 1 sink used concurrently (based on a 1.5 GPM showerhead and 0.5 GPM sink faucet in southern US locations)
Smart Tankless Water Heater, WIFI + App Included, and only water heater with patent pending Ultrasonic flow sensing
The Opti18+’s compact modern design is wall mounted and frees up closet space for extra valuable storage
Optimal products come with freeze protection, leak detection and vacation mode protection
Opti model products come with advanced diagnostics, no moving parts and easily replaced heating elements
Model includes Wi-Fi
Optimal app available on IOS and Android
