My Cart
Your Shopping Cart is Empty
flow regulator kit | 3/4" in-lin...
SKU: 00860010792681
Collections: accessories
Helps maintain consistent hot water temperatures throughout your home. Particularly useful during winter months when inlet water temperatures drop.
$18.75
$25.00
25% OFF
opti12 plus | 12kW 208V 2.5GPM W...
SKU: 00860010792629
Collections: all water heaters, booster, Electric Tankless Water Heaters, Endless hot water sale!, opti+ water heaters, Water Heaters
Replace your whole-home tank heater, install at point of use, or boost a hybrid. Control from your phone.
$599.00
opti12 | 12kW 208V 2.5GPM 25-Yea...
SKU: 00860010792605
Collections: all water heaters, booster, Electric Tankless Water Heaters, Endless hot water sale!, opti line, Water Heaters
Replace your whole-home tank heater, install at point of use, or boost a hybrid.
$499.00
opti15 plus | 15kW 240V 3.0GPM W...
SKU: 00860014516504
Collections: all water heaters, booster, Electric Tankless Water Heaters, Endless hot water sale!, opti+ water heaters, Water Heaters
Replace your whole-home tank heater, install at point of use, or boost a hybrid.
$619.00
$719.00
14% OFF
opti15 | 15kW 240V 3.0GPM 25-Yea...
SKU: 00860010792698
Collections: all water heaters, booster, Electric Tankless Water Heaters, Endless hot water sale!, opti line, Water Heaters
Replace your whole-home tank heater, install at point of use, or boost a hybrid.
$519.00
$619.00
16% OFF
opti18 plus | 18kW 240V 3.7GPM W...
SKU: 00860010792636
Collections: all water heaters, Electric Tankless Water Heaters, Endless hot water sale!, opti+ water heaters, Water Heaters
Replace your whole-home tank heater, install at point of use, or boost a hybrid. Control from your phone.
$729.00
opti18 | 18kW 240V 3.7GPM 25-Yea...
SKU: 00860010792612
Collections: all water heaters, Electric Tankless Water Heaters, Endless hot water sale!, opti line, Water Heaters
Replace your whole-home tank heater, install at point of use, or boost a hybrid.
$629.00
opti27 plus | 27kW 240V 4.5GPM W...
SKU: 00860010792650
Collections: all water heaters, Electric Tankless Water Heaters, Endless hot water sale!, opti+ water heaters
Replace your whole-home tank heater, install at point of use, or boost a hybrid. Control from your phone.
$829.00
opti27 | 27kW 240V 4.5GPM 25-Ye...
SKU: 00860010792643
Collections: all water heaters, Electric Tankless Water Heaters, Endless hot water sale!, opti line
Replace your whole-home tank heater, install at point of use, or boost a hybrid.
$729.00
scale inhibitor 1 replacement ca...
SKU: 00860010792667
Collections: accessories
Replacement polyphosphate cartridge for your scale inhibitor system. Continues protecting your water heater, pipes, and appliances from hard water damage.
$24.99
$30.00
17% OFF
scale inhibitor with t-fitting |...
SKU: 00860010792674
Collections: accessories
Protect your water heater, pipes, and appliances from hard water scale buildup. Complete inline system with T-fitting for easy installation.
$40.99
$50.00
18% OFF
1 – 11 product(s) of 11