Discover a curated collection of In-line Bath Heaters has solutions built for reliability in residential, commercial, and wellness settings. These compact 1.5kW units run on 120V or 230V power and include convenient plug-and-cord options for fast, straightforward installation. With a slim footprint and durable construction, they integrate cleanly into existing plumbing, delivering on-demand hot water where you need it most. Perfect for retrofits, renovations, or new builds, this range emphasizes safety, efficiency, and easy maintenance.
Whether upgrading a spa, bathroom, or treatment room, choose a model that matches your voltage and connection preferences. Our In-line Bath Heater collection is designed for consistent performance, quick warm-up, and long-lasting value, helping you enhance comfort without complicating your setup.

![Baptismal Heater 5.5kW [2" x 15"] [230v] [W/Box] [26-0000ABX-7S-K] Bath Parts: Bath Heaters (Baptismal Heater) 26-0000ABX-7S-K_Baptismal_Heater_15](http://bathparts.com/cdn/shop/files/26-0000ABX-7S-K_Baptismal_Heater_15.jpg?v=1769976127&width=1600)
![Baptismal Heater 5.5kW [2" x 15"] [230v] [W/Box] [26-0000ABX-7S-K] Bath Parts: Bath Heaters (Baptismal Heater) 26-0000ABX-7S-K](http://bathparts.com/cdn/shop/products/26-0000ABX-7S-K.jpg?v=1769976126&width=700)
![Bath Heater Short [T-STYLE 5.5''] [1.5KW] [115v] (PH100-15UP-S) Bath Parts: Bath Heaters (Hydro-Quip) PH10015UP](http://bathparts.com/cdn/shop/products/PH10015UP.jpg?v=1769976164&width=700)
![Bath Heater [T-STYLE 7''] [1KW] [115v] (PH100-10UP) Bath Parts: Bath Heaters (Hydro-Quip) 46-355-1030](http://bathparts.com/cdn/shop/files/46-355-1030.jpg?v=1769976128&width=1600)
![Bath Heater, In-line Pressure (120v) (1.5kW) [PH301-15UP] Bath Parts: Bath Heaters (Hydro-Quip) PH301-15UV.1](http://bathparts.com/cdn/shop/products/PH301-15UV.1.jpg?v=1769976163&width=700)
![Bath Heater, In-line Pressure (120v) (1.5kW) [PH301-15UP] Bath Parts: Bath Heaters (Hydro-Quip) Heater_Parts](http://bathparts.com/cdn/shop/files/Heater_Parts.jpg?v=1769976164&width=1600)
![Hydro-Quip In-Line Pressure [Short] Bath Heater [1.5kW] [120v] [3ft Cord/Plug] (PH101-15UP-S) Bath Parts: Bath Heaters (Hydro-Quip) PH101-15UP](http://bathparts.com/cdn/shop/products/PH101-15UP.jpg?v=1769976126&width=700)
![Waterway Heater Tailpiece [1.5" Buttress Thread x 1.5" Slip Tailpiece] [No O-Ring] (417-4090) PVC Plastic Fittings & Valves: Unions 417-4090_baa85c38-ad58-497e-900d-ff3ea4b1fecf](http://bathparts.com/cdn/shop/products/417-4090_baa85c38-ad58-497e-900d-ff3ea4b1fecf.jpg?v=1769976156&width=600)
![Waterway Heater Tailpiece [1.5" Buttress Thread x 1.5" Slip Tailpiece] [No O-Ring] (417-4090) PVC Plastic Fittings & Valves: Unions 89-238-1020_XL](http://bathparts.com/cdn/shop/files/89-238-1020_XL.jpg?v=1769976156&width=1600)

![Hydro Quip In-line Vacuum [1.5kW] [120v] [3` Cord/Plug] [PH101-15UV] Bath Parts: Bath Heaters (Hydro-Quip) ph101-15uv_bath-control-heater-complete-hydroquip-80](http://bathparts.com/cdn/shop/products/ph101-15uv_bath-control-heater-complete-hydroquip-80.jpg?v=1769976163&width=700)