A FloThru heater helps warm spa water as it moves through a compatible heating assembly, and this Dimension One D-1 unit is designed as a 4.0 kilowatt heater with a 15 inch by 2 inch format for 230 volt applications. When the original heater becomes inefficient or fails, the spa can lose the dependable heat support it should provide. The D-1 compatibility, 4.0 kilowatt output, 15 inch by 2 inch size, and 230 volt design give this heater practical value because replacement heaters work best when the new unit matches the original electrical and plumbing requirements closely. A properly selected heater helps restore intended water-heating performance and contributes to more dependable spa operation. This type of component is especially useful when the surrounding control and circulation systems remain serviceable and the main need is renewed heat generation. That keeps the repair focused on a core operating part. Installed in the proper setup, this heater helps restore dependable water heating and contributes to stronger overall spa performance. 4.0 kilowatt FloThru heater for compatible Dimension One D-1 applications 15 inch by 2 inch format with 230 volt design Helps restore intended spa heating performance Useful when original heaters are weak or nonfunctional Improves repair confidence and system reliability
![Dimension One 4.0kW D-1 FloThru Heater [15" x 2"] [230v] (1563-08)](https://cdn.shopify.com/s/files/1/1751/9347/files/46-456-1525_XL.jpg?v=1715147499&width=480)
