Balboa 15" x 2" Spa Heater Replacement (5.5 kW) — 48-1555-HS, w/o Pressure Switch

Restore reliable warmth to your Balboa-equipped spa with this direct replacement heater. Measuring 15 inches long and 2 inches in diameter, it delivers a robust 5.5 kW heat output to bring your tub to temperature quickly and maintain steady comfort after every soak. This unit is manufactured by Hydro-Quip as a genuine Balboa replacement part (model 48-1555-HS) and is designed to fit standard Balboa heater enclosures without the pressure switch included in the kit.

Why this Balboa Spa Heater stands out

• Precise fit and performance — 15" x 2" form factor paired with a 5.5 kW heating capacity provides dependable, rapid heating for Balboa-controlled spas.
• Extensive compatibility — Optimized for use with Balboa spa control systems such as 53182, 53182-01, 53182-02, 53182-03, 50861-01, 51785-01, 53064, and 53023, ensuring a seamless swap in many popular setups.
• Wide replacement footprint — Replaces a broad spectrum of older Balboa heater models (see full compatibility list in product details), including numerous part numbers from the 10,000-series through newer designations.
• No pressure switch included — Sold without a pressure switch, which can simplify upgrades if your system uses an external switch or already has a compatible assembly.
• Durable, ready-to-install design — Built to endure multiple heat cycles and provide dependable performance when you need your spa most.

Compatibility and replacement details

This heater is a direct Balboa replacement for the 48-1555-HS and is compatible with a long list of Balboa control configurations and legacy heater models. In addition to the listed Balboa control systems, it replaces a wide range of part numbers to ease your replacement process. Notable compatibility includes part families and numbers such as 10554, 20-00227, 20-00245, 20-00277-C, 20-00307, 20-00317, 20-00318, 20-00319, 20-00324, 20-00328, 20-00348, 20-00348-C, 20-00417, 20-00425, 20-00429, 20-00430, 20-00503, 20-08574, 22-753040-0246, 22-753040-0546, 25-250-5005, 26-0003A, 26-0011-7S-K, 26-0032, 26-0032-K, 26-0032-R1C, 26-0032-RIC, 26-0032A, 26-0034, 26-0056-7S-K, 26-0056-7T-K, 26-0058, 26-0071, 26-0071-K, 26-0314-7S-K, 26-0314-7T-K, 26-0535-7S-K, 26-0736-7S-K, 26-0802-7S-K, 26-0809-7S-K, 26-08159, 26-50096-7S-KP, 26-58027-7S-K, 386881, 46-510-3206, 48-1555-HQ, 48-1555-RP-, 48-1555-RP-GEK, 48-1555-RS, 48-1555F-HQ, 48-260032-R1, 48-3300-10-154H, 48-3300-10-321H, 48-3300-10-535H, 481555RP, 481555RS, 50080, 50096, 58027, 610938, 6500-407, 9144-23, AQT2000328, B24040E, B24045T, B24055B, B24055E, B24055G, B24055M, B24055N, B24055Q, B24055S, B24055T, B24055T5, BAL58027, C2550-0056, C2550-0056ET, C2550-0066ET-A, C2550-0073, C2550-0304, C2550-0304TI, C2550-0307ET, C2550-0309ET, C2550-0313N, C2550-0314, C2550-0314ET, C2550-0321-A, C2550-0435, C2550-0456, C2550-0456ET, C2550-0535, C2550-0537, C2550-0556ET, C2550-0621, C2550-0735, C2550-07352, C2550-07352ET, C2550-0736, C2550-0739ET, C2550-0802ET, C2550-0809-1, C2550-1054, C2550-1056, C2550-5000-P, EL-63013, EL-63014, HA-B24045T-2S, HA-B24045T-2S5T, HTR48330010535H, K464000)

Whether you’re replacing a failed heater, upgrading an aging Balboa system, or rebuilding a spa with a Balboa control family, this 48-1555-HS unit provides a reliable, OEM-style pathway to restore comfort and efficiency. Always verify electrical compatibility and follow safety guidelines during installation.

Installation and usage tips

• Power down the spa and verify your electrical supply matches the heater’s requirements before installation.
• Because this model ships without a pressure switch, confirm whether your system uses an external switch or if your existing switch assembly can be retained.
• Fitment is designed for Balboa heater enclosures; ensure the 15" x 2" dimensions align with your cabinet space.
• If you’re replacing an older heater, this unit typically allows for a straightforward swap with minimal plumbing modification.

Upgrade with confidence and bring back consistent spa warmth. This Balboa spa heater replacement offers a precise fit, broad compatibility, and a strong track record with Balboa control ecosystems—perfect for discerning hot tub owners who value reliability and long-term compatibility.