Balboa Hot Tub Retrofit Kits For Easy Spa Upgrades provide a complete solution to replace aging spa control systems. The BP and VS families feature Balboa's patented M7 temperature and flow sensor technology, a rugged plastic enclosure to resist water intrusion, and a universal control platform for easier installation and service. This makes upgrading faster and more reliable for both professional technicians and informed owners.
Designed for flexibility and longevity, the kits support 120/240V power, 4.0 or 5.5kW heaters, and easy wiring to existing pumps, with components built to simplify service. For spa professionals and informed owners alike, Balboa Hot Tub Retrofit Kits For Easy Spa Upgrades offer proven reliability, streamlined installation, and confidence in ongoing performance.
![Balboa BP7 4.0kW Retrofit Kit [VS501Z] (54356HC3) (51-G6405) Spa Parts: Spa Control Systems (Balboa) 54218-Z_lar](http://bathparts.com/cdn/shop/products/54218-Z_lar.jpg?v=1769976124&width=700)
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![Hydro-Quip Water Pro BP7 5.5kW Retro-fit Kit TP500 5.5kW [BP7-500-55-K] Spa Parts: Spa Control Systems (Hydro Quip)) Water_Pro_BP7_Retro-Fit_Spa_Control_5.5kW_Fixed_Heater_TP500_Panel_50-BP7-500-55-K](http://bathparts.com/cdn/shop/files/Water_Pro_BP7_Retro-Fit_Spa_Control_5.5kW_Fixed_Heater_TP500_Panel_50-BP7-500-55-K.webp?v=1775577279&width=1016)
![Balboa BP7 4.0kW Retrofit Kit VS520DZ S [240v] [Topside TP600] (56016-01) [G6406] Spa Parts: Spa Control Systems (Balboa) G6406_grande_29fbd731-da2d-4e60-92f3-36de8e4913b9](http://bathparts.com/cdn/shop/files/G6406_grande_29fbd731-da2d-4e60-92f3-36de8e4913b9.jpg?v=1769976125&width=600)
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![Balboa BP7 4.0kW Retrofit Kit [Bullfrog] BP7 Series, 4kw, oval topside panel (52857) (G6406) Spa Controls G6406_5cf46763-8b46-4f38-930b-ced4463efb09](http://bathparts.com/cdn/shop/products/G6406_5cf46763-8b46-4f38-930b-ced4463efb09.jpg?v=1769976169&width=700)
![Balboa BP7 4.0kW Retrofit Kit [Bullfrog] BP7 Series, 4kw, oval topside panel (52857) (G6406) Spa Controls api-v1.1-file-public_files-pim-assets-eb-c0-dd-61-61ddc0ebdd14481e49915197-images-8f-26-1e-62-621e268f445f1b0b1923f6ed-old_g6406_tbnl-83_bb18165d-d7bc-440d-b2d2-d17035022f6a](http://bathparts.com/cdn/shop/products/api-v1.1-file-public_files-pim-assets-eb-c0-dd-61-61ddc0ebdd14481e49915197-images-8f-26-1e-62-621e268f445f1b0b1923f6ed-old_g6406_tbnl-83_bb18165d-d7bc-440d-b2d2-d17035022f6a.jpg?v=1769976170&width=2000)
![Balboa BP7 5.5kW Retrofit Kit [VS511SZ] [120/240V] (54384) (51-G6505) Spa Parts: Spa Control Systems (Balboa) g6405](http://bathparts.com/cdn/shop/products/g6405.jpg?v=1769976128&width=600)
![Balboa, BP7 4.0kW Retrofit Kit [240v] TP500 Topside (51-G6405) Spa Parts: Spa Control System Parts (Balboa Retrofit Kits) 58-138-3255_6-DIAGRAM__XL_85817b39-60bc-4053-a5b5-88957f18e37e](http://bathparts.com/cdn/shop/products/58-138-3255_6-DIAGRAM__XL_85817b39-60bc-4053-a5b5-88957f18e37e.jpg?v=1769976125&width=1600)
![Hydro-Quip Water Pro BP7 [4.0kW] Retro-fit Kit SpaTouch Mini Panel [50-BP7-STM-55-K] Spa Parts: Spa Control Systems (hydro-quip) 50-BP7-STM-55-K](http://bathparts.com/cdn/shop/files/50-BP7-STM-55-K.webp?v=1779914068&width=987)
![Balboa BP7 4.0kW Retrofit Kit VS523DZ [3-Pump] (54763-02) [G6406] Spa Parts: Spa Control Systems (Balboa) api-v1.1-file-public_files-pim-assets-eb-c0-dd-61-61ddc0ebdd14481e49915197-images-8f-26-1e-62-621e268f445f1b0b1923f6ed-old_g6406_tbnl-83_fa75f465-3069-4a1c-98d2-0cdb7c6f3797](http://bathparts.com/cdn/shop/products/api-v1.1-file-public_files-pim-assets-eb-c0-dd-61-61ddc0ebdd14481e49915197-images-8f-26-1e-62-621e268f445f1b0b1923f6ed-old_g6406_tbnl-83_fa75f465-3069-4a1c-98d2-0cdb7c6f3797.jpg?v=1769976165&width=2000)
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![Balboa BP7 5.5kW Retrofit Kit [120/240v] (51-G6505) Spa Parts: Spa Control Systems (Balboa) api-v1.1-file-public_files-pim-assets-eb-c0-dd-61-61ddc0ebdd14481e49915197-images-8e-26-1e-62-621e268e445f1b0b1923f6e4-old_g6405_tbnl-83](http://bathparts.com/cdn/shop/files/api-v1.1-file-public_files-pim-assets-eb-c0-dd-61-61ddc0ebdd14481e49915197-images-8e-26-1e-62-621e268e445f1b0b1923f6e4-old_g6405_tbnl-83.jpg?v=1769976125&width=2000)
![Balboa BP7 5.5kW Retrofit Kit [120/240v] (51-G6505) Spa Parts: Spa Control Systems (Balboa) G6505](http://bathparts.com/cdn/shop/products/G6505.jpg?v=1769976089&width=1000)
![Balboa, BP7 4.0kW Retrofit Kit ICON M7/LE [4.0kW] [240v] [52761] (51-G6405) Spa Parts: Spa Control Systems (Balboa) iconm7-pak](http://bathparts.com/cdn/shop/products/iconm7-pak.jpg?v=1769976085&width=700)
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![Hydro-Quip Water Pro BP7 [4.0kW] Retro-fit Kit Low-Flow SpaTouch Mini Panel [50-BP7-STM-40-C] Spa Parts: Spa Control Systems (hydro-quip) 50-BP7-STM-40-C](http://bathparts.com/cdn/shop/files/50-BP7-STM-40-C.webp?v=1769976161&width=1200)
