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Spa Parts Made Simple

Pumps, heaters, control boards, and replacement parts — without the confusion.

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Not sure which part fits your spa?

We make it easy to find the right replacement part — without guessing.

  1. Find your spa model
  2. Match the part number
  3. Order with confidence
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SpaShopper makes it easy to find quality hot tub and spa replacement parts without the frustration. From spa pumps and heaters to control boards, jets, filters, and plumbing components, we stock parts that fit a wide range of popular spa brands. Whether you’re fixing a heating issue, replacing a worn pump, or upgrading aging components, SpaShopper helps you get your spa running again quickly and confidently.

Balboa

Balboa flow thru heater assemblies are among the most widely used complete heating units in hot tubs and spas. These assemblies feature stainless steel (or titanium in some models) flow-thru manifolds with powerful heating elements, built-in M7 dual thermistor sensors (temperature + hi-limit), pressure switches for flow detection, and unions/tailpieces for straightforward plumbing integration—ensuring safe, efficient heating without dry firing.

This category offers a full selection of replacement Balboa flow thru heater assemblies and direct equivalents, available in popular ratings: 4.0kW, 5.5kW, 6.0kW, and 11kW (120V/240V configurations), with 15" standard length manifolds, 1-1/2" or 2" plumbing unions, split nuts, tailpieces, and options for low-flow or high-flow designs. Compatible with Balboa control systems including VS300/500/501, BP501/601, GL/GS, MVP260, Elite, and many others—universal cross-compatible versions also available for older or discontinued packs.

Balboa heater assemblies vary by kW rating, voltage, manifold material/length, sensor configuration (M7 standard), pressure switch type (normally open/closed), union size, and specific control pack compatibility—precise matching prevents fit issues, error codes (e.g., OH, HL, FLO, Sn1/Sn2), or unsafe operation.

Common problems include no heat from failed elements or bad M7 sensors, overheating/hi-limit trips due to scale or poor flow, flow errors from stuck pressure switches or clogged systems, leaks at unions/gaskets from wear or improper installation, sensor faults causing Sn errors, or corrosion in hard water. Replacing the full Balboa flow thru heater assembly is often the quickest, most reliable fix—restoring consistent heating and eliminating multiple fault points.

To find the correct Balboa heater assembly:
- Identify your spa brand/model using Balboa controls, year, pack type (e.g., VS520SZ, BP501), voltage, current kW, plumbing size, and sensor setup.
- Note any error codes on the control panel (e.g., SnS, OH, FLO) or heater markings.
- Avoid guessing—send us clear photos of your existing Balboa heater (showing manifold label, element rating, M7 sensors, pressure switch, unions, wiring harness, control box, and spa label with model/serial number) for expert verification.

Text photos to 772-800-5445 or call 844-500-4645—we'll confirm compatibility before you order. SpaShopper is not affiliated with any spa manufacturer. Brand names and part numbers are used for compatibility and identification purposes only.

Shop our Balboa flow thru heater assemblies today to bring your hot tub back to perfect temperature with proven reliability and performance.

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