Lifetime warranty. 12 kW electric tankless water heater provides efficient, continuous on demand hot water. The Opti12 is the only water heater with patented ultrasonic flow sensing technology providing quiet, efficient and smart control. With advanced power modulation, built in diagnostics and wireless compatibility the Opti12 heats to within 1° of set temperature (plus or minus). Heat up to 2.5 gallons per minute (gpm) to 105°F given an inlet water temperature of 72°F. It supports a 1 - 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 Opti12 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. Tired of your hot water running out mid-shower or struggling to keep up with your family's needs? The Opti12 Tank Booster is the smart solution to your hot water woes. Easily installed on your existing tank water heater, the Opti12 increases your hot water capacity by up to 45%, giving you the luxury of longer showers and the convenience of handling multiple hot water uses at once. Don't replace a perfectly good water heater – boost its performance with the Opti12
Lifetime guarantee - 25 Year Limited Warranty, best warranty in the category
Delivers continuous hot water for 1 shower 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, Wi-Fi plus app compatible and only water heater with patented ultrasonic flow sensing
The Opti12’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
Get More from Your Current Tank: Enjoy longer, more relaxing showers, the Opti12 boosts your existing tank's capacity by up to 45%
Space-Saving Solution: Get the performance of a larger water heater without taking up valuable floor space, the compact Opti12 easily integrates with your existing tank
Works with Most Tank Heaters: Compatible with both electric and gas tank water heaters, the Opti12 is a versatile solution for any home