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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.

Screwplug

Screwplug heater elements (also known as screw-in or threaded plug elements) feature a 1-1/4" NPT threaded base that screws directly into the manifold's threaded port for a secure, leak-resistant seal. This classic mounting style is the most common in spa and hot tub heaters, allowing easy removal/replacement with just a wrench while the coiled sheath heats water efficiently inside the flow-thru or low-flow manifold.

This category includes replacement screwplug heater elements and direct fits, in standard ratings: 4.0kW, 4.5kW, 5.5kW, 6.0kW, 8.0kW, and 11.0kW (120V or 240V), with Incoloy, stainless steel, or titanium sheaths. Many include O-rings/gaskets for sealing and are compatible with Balboa (M7/VS/BP series), Gecko (in.ye/in.stream), HydroQuip universal, Sundance/Jacuzzi, Watkins No-Fault, Brett Aqualine, ACC/CTI, and most aftermarket manifolds. Straight or slight-bend sheaths are available for various manifold depths.

Screwplug elements vary by wattage/voltage, sheath material/length/diameter (typically 8"–12" immersion), watt density (matched to flow to prevent burnout), sheath bend (straight or U-bend for certain fits), and manifold thread compatibility—precise matching ensures proper thread engagement, no leaks, and safe operation without hot spots or dry firing.

Common problems include no heat from burnt-out coils, scale buildup on the sheath reducing efficiency (especially in hard water), corrosion/pitting in non-titanium sheaths from salt or poor chemistry, leaks from worn O-rings or cross-threading during install, breaker trips from shorts, or premature failure in low-flow conditions. Replacing a screwplug heater element is quick and inexpensive—often just unscrew the old one, clean the threads, apply new O-ring, and screw in the replacement.

To select the right screwplug heater element:
- Confirm your spa brand/model, control pack, voltage, kW rating, manifold thread size (1-1/4" NPT standard), immersion length, sheath specs, and any markings on the existing element (e.g., thread type, kW label).
- Check for scale, corrosion on threads/sheath, or heating-related error codes.
- Avoid guessing—send us clear photos of your current screwplug element (showing threaded base, O-ring/gasket area, sheath/coil shape, labels/markings, manifold opening, wiring terminals, and spa label with model/serial number) for expert verification.

**Text or send photos to: 772-800-5445**  
**Or call us at: 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 screwplug heater elements today for fast, reliable replacements that screw right in and get your spa heating again.

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