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4.0KW 115/230V Flow-Thru Heater 405006 115/230V - Bubbles Supply

4.0KW 115/230V Flow-Thru Heater 405006

Part #: 405006

$156.15
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About this heater

This 4.0KW flow-through heater assembly is designed for Dreammaker spa systems, delivering reliable heating performance with dual voltage capability at 115/230V. The 2-inch crossover domestic configuration ensures proper water circulation and efficient heat transfer, making it an ideal replacement for worn or failed heating elements in your spa.

Built to OEM specifications, this heater assembly guarantees an exact fit for seamless installation. With same-day shipping and our comprehensive 1-year warranty, you can trust this replacement part to restore your spa's heating function quickly and reliably. Professional installation is recommended to ensure proper electrical connections and optimal performance—always verify your spa's voltage requirements and heater configuration before installation.

Exact part number

405006

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • 4.0KW spa heater
  • Dreammaker heater element
  • Flow-through heater assembly
  • inline spa heater

Looking for an older part number? Check our supersession lookup tool

Technical specifications

Voltage
115V/230V dual
Union size
2 inch
Port type
Flow-thru crossover (domestic configuration)

Plumbing notes

  • Union size: 2 inch
  • Port type: Flow-thru crossover (domestic configuration)

Need help measuring? Email hello@bubblessupply.com with a photo of your existing plumbing.

Common symptoms this part fixes

If your spa is showing any of these signs, this part is likely your fix:

  • No heat or cold water in spa
  • Spa displays HH or OH error code
  • Heater cycling on and off repeatedly
  • Tripped GFCI or breaker linked to heating circuit
  • Visible corrosion, scale buildup, or burn marks on existing heater assembly

Not sure if this is your problem? Try our diagnostic centre or .

Before you buy — quick checklist

  • Confirm your spa is a Dreammaker brand — this is an OEM-specific part
  • Verify your spa is wired for 115V or 230V and that this heater matches your current voltage configuration
  • Check your existing heater element for the 4.0KW rating — do not assume wattage
  • Inspect your current heater unions — confirm they are 2-inch before ordering
  • Note any error codes displayed on your spa (HH or OH) to confirm the heater is the failed component, not the sensors

Reading the checklist now prevents 90% of returns. Worth the 60 seconds.

Install difficulty: Hard — Technician recommendedTypically 60-90 minutes

What's in the box

  • 4.0KW flow-thru heater assembly
  • O-rings (heater union seals)

If your order is missing any items listed above, contact hello@bubblessupply.com within 48 hours of delivery.

Warranty

1 year manufacturer warranty against defects

Covers manufacturing defects. Does not cover improper installation, normal wear, or accidental damage.

Warranty claims: warranty@bubblessupply.com

Perfect Fit Guarantee

Ordered with our help and the part doesn't fit? Contact us before installation. We'll resolve it with an exchange, replacement recommendation, or return approval.

Learn about our Perfect Fit Guarantee →

Shipping

We ship across the US and Canada. US orders ship from our US warehouse to US customers; Canadian orders ship from our Canadian warehouse to Canadian customers — no cross-border shipping, no surprise duties. In-stock orders placed before 3pm CT ship same day. Standard shipping $9.95 flat rate. Free shipping on orders over $200. Express options available at checkout.

Returns

30-day hassle-free returns on unused parts in original packaging. Contact us before returning to receive your RMA number.

Frequently asked questions

Check the Compatibility section above to confirm fitment for your spa brand and model. If your model is not listed, use our fitment selector at /pages/find-my-part or ask our parts AI for a personalized recommendation.

In-stock orders placed before 3pm CT ship the same day. You will receive tracking information by email as soon as your order ships.

We accept returns within 30 days of delivery for unused items in original packaging. Email returns@bubblessupply.com with your order number to start a return. Installed electrical parts cannot be returned for safety reasons.

Yes, all new parts come with a 1-year warranty against manufacturing defects. Warranty does not cover damage from improper installation or normal wear and tear.

Customer reviews

AI Fitment Assistant

Tell us your spa model and we will confirm this part fits before you buy.

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