Discover a complete collection of Balboa M7 Flo-Thru Spa Heater options designed for dependable spa heating, easy installation, and long-term durability. Built for residential hot tubs, these units deliver fast warm-up and precise control with straightforward 2-inch plumbing connections, simplifying replacements and upgrades for DIYers and service professionals alike. The Balboa M7 Flo-Thru Spa Heater offers consistent performance, energy efficiency, and durable construction that spa owners rely on season after season.
Ideal for upgrading aging systems, stocking dependable spare parts, or specifying replacements for new builds, this collection covers multiple configurations to match voltage needs and heater outputs while remaining compatible with popular spa platforms. Enjoy reliable heating, minimal downtime, and clear troubleshooting assistance. Balboa M7 Flo-Thru Spa Heater delivers comfort and efficiency for both home spa enthusiasts and professional technicians alike.
![Balboa M7 Flo-Thru Spa Heater 5.5kW [230v] [2" x 15"] SUV/LE/Value (58010) Spa Parts: Spa Heaters (Balboa Spa Heaters) 58121](http://bathparts.com/cdn/shop/products/58121.jpg?v=1769976035&width=1600)
![Balboa M7 Flo-Thru Spa Heater 4.0 kW [2" x 15"] [240v] (55691) Spa Parts: Spa Heaters (Balboa Spa Heaters) 46-138-1070_1-REVERSE__XL](http://bathparts.com/cdn/shop/files/46-138-1070_1-REVERSE__XL.jpg?v=1769976134&width=1600)
![Balboa M7 Flo-Thru Spa Heater 4.0 kW [2" x 15"] [240v] (55691) Spa Parts: Spa Heaters (Balboa Spa Heaters) 46-138-1070_XL](http://bathparts.com/cdn/shop/files/46-138-1070_XL.jpg?v=1769976134&width=1600)
![Balboa M7 Flo-Thru Spa Heater 4.0 kW [2" x 15"] [240v] (58103) Spa Parts: Spa Heaters (Balboa Spa Heaters) 46-138-1340_XL_8d40f5b3-636d-4355-8332-c51cbb27922f](http://bathparts.com/cdn/shop/products/46-138-1340_XL_8d40f5b3-636d-4355-8332-c51cbb27922f.jpg?v=1769976080&width=1600)
![Balboa M7 Flo-Thru Spa Heater 4.0 kW [2" x 15"] [240v] (58106) (58064) (G7412) Spa Parts: Spa Heaters (Balboa Spa Heaters) 46-138-1310_3-BACK__XL_dd74df25-4b9e-40f5-850c-41e2f128cfd1](http://bathparts.com/cdn/shop/files/46-138-1310_3-BACK__XL_dd74df25-4b9e-40f5-850c-41e2f128cfd1.jpg?v=1769976036&width=1600)
![Balboa M7 4.0kW Flo-Thru Spa Heater [Master Spa Flo] [2" x 15"] [240v] W/Stud (X300943) Spa Parts: Spa Heaters (Balboa Spa Heaters) 58104](http://bathparts.com/cdn/shop/files/58104.jpg?v=1776718752&width=1600)
![Balboa M7 Flo-Thru Spa Heater 4.0 kW [2" x 15"] [240v] (58212) Spa Parts: Spa Heaters (Balboa Spa Heaters) 26-0071-DS-5S-K](http://bathparts.com/cdn/shop/files/26-0071-DS-5S-K.webp?v=1769976080&width=1200)
![Balboa M7 Flo-Thru Spa Heater 4.0 kW [2" x 15"] [240v] W/Stud (58148) Spa Parts: Spa Heaters (Balboa Spa Heaters) G7415](http://bathparts.com/cdn/shop/products/G7415.jpg?v=1769976080&width=1600)
![Balboa M7 Flo-Thru Spa Heater 4.0 kW [230v] [2" x 15"](55437) Spa Parts: Spa Heaters (Balboa Spa Heaters) Balboa_BP_Series_5.5kW_M7_Flo-Thru_Heater_Assembly_26-G7512-K](http://bathparts.com/cdn/shop/files/Balboa_BP_Series_5.5kW_M7_Flo-Thru_Heater_Assembly_26-G7512-K.webp?v=1775755322&width=1200)
![Balboa M7 Flo-Thru Spa Heater 4.0 kW [230v] [2" x 15"](55437) Spa Parts: Spa Heaters (Balboa Spa Heaters) G7512_9b4a592e-d444-408f-9fcb-05b3e4791f04](http://bathparts.com/cdn/shop/products/G7512_9b4a592e-d444-408f-9fcb-05b3e4791f04.jpg?v=1775752377&width=1600)
![Balboa M7 Flo-Thru Spa Heater 4.0Kw [2" x 15"] [240v] (50142) Spa Parts: Spa Heaters (Balboa Spa Heaters) C2400-0535-TPS](http://bathparts.com/cdn/shop/products/C2400-0535-TPS.jpg?v=1769976081&width=700)
![Balboa M7 Flo-Thru Spa Heater 4.0Kw [2" x 15"] [240v] (50142) Spa Parts: Spa Heaters (Balboa Spa Heaters) 50142_lar](http://bathparts.com/cdn/shop/products/50142_lar.jpg?v=1769976081&width=700)
![Balboa M7 4.0kW Flo-Thru Spa Heater [2" x 15"] [240v] (G7418) Spa Parts: Spa Heaters (Balboa Spa Heaters) G7418](http://bathparts.com/cdn/shop/products/G7418.jpg?v=1769976081&width=1600)
![Balboa M7 Flo-Thru Spa Heater 4.0Kw [2" x 15"] [240v] (58031) Spa Parts: Spa Heaters (Balboa Spa Heaters) 46-138-1340_XL](http://bathparts.com/cdn/shop/products/46-138-1340_XL.jpg?v=1769976082&width=1600)
![Balboa M7 Flo-Thru Spa Heater 4.0Kw [2" x 15"] [240v] (58031) Spa Parts: Spa Heaters (Balboa Spa Heaters) api-v1.1-file-public_files-pim-assets-eb-c0-dd-61-61ddc0ebdd14481e49915197-images-0b-90-4d-63-634d900b2e6f22d35d7d5108-bea_G7415_heater-assembly-balboa-30](http://bathparts.com/cdn/shop/products/api-v1.1-file-public_files-pim-assets-eb-c0-dd-61-61ddc0ebdd14481e49915197-images-0b-90-4d-63-634d900b2e6f22d35d7d5108-bea_G7415_heater-assembly-balboa-30.png?v=1769976083&width=2000)
![Balboa M7 Flo-Thru Spa Heater 4.0Kw [2" x 15"] [240v] (58056) (G7412) Spa Parts: Spa Heaters (Balboa Spa Heaters) G7532_reverse_f9d738f2-574e-49ea-b81c-5c0caef92f74](http://bathparts.com/cdn/shop/products/G7532_reverse_f9d738f2-574e-49ea-b81c-5c0caef92f74.jpg?v=1769976081&width=1600)
![Balboa M7 Flo-Thru Spa Heater 4.0Kw [2" x 15"] [240v] (58067) [G7418] Spa Parts: Spa Heaters (Balboa Spa Heaters) 46-138-1360_XL](http://bathparts.com/cdn/shop/products/46-138-1360_XL.jpg?v=1769976082&width=1600)
![Balboa M7 Flo-Thru Spa Heater 4.0Kw [2" x 15"] [240v] [LE Systems] (58048) Spa Parts: Spa Heaters (Balboa Spa Heaters) G7418_31a80728-2415-4f99-9a14-3e219b625830](http://bathparts.com/cdn/shop/products/G7418_31a80728-2415-4f99-9a14-3e219b625830.jpg?v=1769976081&width=1600)
![Balboa M7 Flo-Thru Spa Heater 4.0Kw [2" x 15"] [240v] [R574 / R578] (53349) Spa Parts: Spa Heaters (Balboa Spa Heaters) G7418_f3ea8330-4469-4283-a952-8e163b244f68](http://bathparts.com/cdn/shop/products/G7418_f3ea8330-4469-4283-a952-8e163b244f68.jpg?v=1769976081&width=1600)
![Balboa M7 Flo-Thru Spa Heater 4.0Kw [2" x 15"] [240v] [R574 / R578] (53349) Spa Parts: Spa Heaters (Balboa Spa Heaters) 53349_lar_31006dc8-f1fe-4e87-a458-c2bcd11f0f6b](http://bathparts.com/cdn/shop/products/53349_lar_31006dc8-f1fe-4e87-a458-c2bcd11f0f6b.jpg?v=1769976082&width=700)
![Balboa M7 Flo-Thru Spa Heater 5.5 kW [230V] [2" x 15"] (55302) Spa Parts: Spa Heaters (Balboa Spa Heaters) G7510_d0f1b97d-a5ae-49c3-9899-770892daefd6](http://bathparts.com/cdn/shop/products/G7510_d0f1b97d-a5ae-49c3-9899-770892daefd6.jpg?v=1769976146&width=1600)
![Balboa M7 Flo-Thru Spa Heater 5.5 kW [230V] [2" x 15"] w/stud (58083) Spa Parts: Spa Heaters (Balboa Spa Heaters) G7512_5afa0e45-ab88-460d-805b-c4858ddb9cc8](http://bathparts.com/cdn/shop/products/G7512_5afa0e45-ab88-460d-805b-c4858ddb9cc8.jpg?v=1769976171&width=1600)
![Balboa M7 Flo-Thru Spa Heater 5.5kW [230v] [2" x 15"] (58089) Spa Parts: Spa Heaters (Balboa Spa Heaters) G7510_49af73d9-3f0a-4e82-be40-8eb64977afc3](http://bathparts.com/cdn/shop/products/G7510_49af73d9-3f0a-4e82-be40-8eb64977afc3.jpg?v=1769976035&width=1600)
![Balboa M7 Flo-Thru Spa Heater 5.5kW [230v] [2" x 15"] (58105) Spa Parts: Spa Heaters (Balboa Spa Heaters) G7510_f3d6967e-ebb7-4223-ad33-fb4e04dfb11b](http://bathparts.com/cdn/shop/products/G7510_f3d6967e-ebb7-4223-ad33-fb4e04dfb11b.jpg?v=1769976035&width=1600)
![Balboa M7 Flo-Thru Spa Heater 5.5kW [230v] [2" x 15"] (58209) Spa Parts: Spa Heaters (Balboa Spa Heaters) G7510_ceaa7396-a9ca-4300-a316-5c67c379a8ca](http://bathparts.com/cdn/shop/products/G7510_ceaa7396-a9ca-4300-a316-5c67c379a8ca.jpg?v=1769976035&width=1600)
![Balboa M7 Flo-Thru Spa Heater 5.5kW [230v] [2" x 15"] W/O Pressure Switch (50157PLG) Spa Parts: Spa Heaters (Balboa Spa Heaters) 46-555-2210_XL_c264dc0b-0fae-441b-b861-69a0f343f161](http://bathparts.com/cdn/shop/files/46-555-2210_XL_c264dc0b-0fae-441b-b861-69a0f343f161.jpg?v=1769976036&width=1600)
![Balboa M7 Flo-Thru Spa Heater 5.5kW [230v] [2" x 15"] W/O Pressure Switch (50157PLG) Spa Parts: Spa Heaters (Balboa Spa Heaters) 50080_lar_8d28838d-7234-493c-acaa-507db0e939f9](http://bathparts.com/cdn/shop/products/50080_lar_8d28838d-7234-493c-acaa-507db0e939f9.jpg?v=1769976035&width=700)