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, Control Box & topside [G6406] Spa Controls G6406.1](http://bathparts.com/cdn/shop/products/G6406.1.jpg?v=1769976124&width=700)
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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)
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![Balboa BP7 5.5kW Retrofit Kit [VS510S] [120/240v](G6505) Spa Parts: Spa Control Systems (Balboa) 54218](http://bathparts.com/cdn/shop/products/54218.jpg?v=1769976124&width=700)
![Balboa BP7 5.5kW Retrofit Kit [Hydro Spa] [HS200VS] [120/240v] (55098) Spa Parts: Spa Control Systems (Balboa) 54218](http://bathparts.com/cdn/shop/files/54218.jpg?v=1769976170&width=800)
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![Balboa BP7 5.5kW Retrofit Kit [Jacuzzi R576] [120/240v] [Replacement Upgrade] Spa Controls 52222-05_spa-control-electronic-complete-balboa-r574-86](http://bathparts.com/cdn/shop/products/52222-05_spa-control-electronic-complete-balboa-r574-86.jpg?v=1769976124&width=700)
![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 [VS510SZ] (54371HC2) (51-G6405) Spa Parts: Spa Control Systems (Balboa) OPTIMIZE_BACKUP_PRODUCT_G6405-1](http://bathparts.com/cdn/shop/files/OPTIMIZE_BACKUP_PRODUCT_G6405-1.jpg?v=1769976110&width=1000)
![Balboa BP7 4.0kW Retrofit Kit VS523DZ [3-Pump] (54762-01) [G6406] Spa Parts: Spa Control Systems (Balboa) BP7_circ_pumps](http://bathparts.com/cdn/shop/files/BP7_circ_pumps.webp?v=1775758514&width=736)
![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)
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![Balboa BP7 4.0kW Retrofit Kit VS523DZ [3-Pump] (54762-01) [G6406] Spa Parts: Spa Control Systems (Balboa) 54762-01_lar](http://bathparts.com/cdn/shop/products/54762-01_lar.jpg?v=1769976124&width=700)
![Balboa BP7 4.0kW Retrofit Kit 2000LE M7 3 Pump [53672] [G6406] Spa Parts: Spa Control Systems (Balboa) 2000le_system](http://bathparts.com/cdn/shop/products/2000le_system.jpg?v=1769976128&width=700)
![Balboa BP7 4.0kW Retrofit Kit VS523DZ [3-Pump] (54762-01) [G6406] Spa Parts: Spa Control Systems (Balboa) G6406](http://bathparts.com/cdn/shop/files/G6406.jpg?v=1769976128&width=1000)
![Balboa BP7 5.5kW Retrofit Kit [VS500] [120/240v] (54368HC3) Spa Parts: Spa Control Systems (Balboa) 54216-Z_bf4eb5fe-75ac-4e18-a681-2f5e4d2bdae2](http://bathparts.com/cdn/shop/products/54216-Z_bf4eb5fe-75ac-4e18-a681-2f5e4d2bdae2.jpg?v=1769976089&width=800)
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![Balboa, BP7 4.0kW Retrofit Kit [EL2001M3] [2 Pump] (53882-05) (51-G6405) Spa Parts: Spa Control Systems (Balboa) 54218-Z_lar_b021f581-56e1-44ee-ac45-4aa4c45f9091](http://bathparts.com/cdn/shop/files/54218-Z_lar_b021f581-56e1-44ee-ac45-4aa4c45f9091.jpg?v=1769976129&width=700)