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4.0KW 230V Flow-Thru Heater C2400-1002-TI 230V - Bubbles Supply
Exact Fit

4.0KW 230V Flow-Thru Heater C2400-1002-TI

Part #: C2400-1002-TI

$376.73
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Also replaces

C2400-1002
1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this heater

This HydroQuip 4.0KW 230V flow-through heater assembly (C2400-1002-TI) is a direct OEM replacement for Spa Builders hot tubs and compatible spa systems. Built to HydroQuip's exacting standards, this 230-volt heater delivers reliable 4.0kW heating power through its compact 2" x 12" housing design, making it ideal for medium to large spa applications where consistent water temperature is critical.

When your spa's heating element fails, this genuine HydroQuip replacement ensures exact fit compatibility and reliable performance. We guarantee precise fitment for your spa system and back every heater with our comprehensive 1-year warranty. Most orders ship same-day from our Canadian warehouse, getting your spa back to perfect operating temperature fast. Before installation, always verify your spa's electrical requirements match the 230V specification and ensure proper flow-through plumbing connections for optimal heater performance and longevity.

Exact part number

C2400-1002-TI

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Also known as / Replaces

This part replaces or is interchangeable with:

  • 4.0kW heater assembly
  • C2400-1002
  • C2400-1002-TI heater element
  • HydroQuip flow-thru heater
  • Spa Builders replacement heater

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

Fits these brands and models

Compatible brands

Spa BuildersHydroQuip
Not sure if it fits your spa? Send us a photo — we'll confirm before you order

Technical specifications

Voltage
230V
Port type
Flow-thru (inline)

Plumbing notes

  • Port type: Flow-thru (inline)

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:

  • Spa water not heating or heating very slowly
  • Heater element burned out or failed open circuit
  • Spa displaying HH (overheat) fault code
  • Spa displaying OH (high limit) fault code
  • Visible corrosion or scale buildup on existing heater element
  • Spa control board showing heater fault or open sensor error

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

Before you buy — quick checklist

  • Confirm your spa runs on 230V — do not install on a 115V system
  • Verify your existing heater housing is 2" x 12" to ensure this assembly fits your plumbing bay
  • Check that your spa controller is a HydroQuip or Spa Builders unit compatible with this heater
  • Inspect your high-limit and pressure switches before replacing the heater — a faulty switch can cause repeat heater failures
  • Drain and de-energize the spa fully before attempting removal of the old heater

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

Install difficulty: Medium — Some experience neededTypically 45–90 minutes

What's in the box

  • 4.0kW 230V flow-thru heater assembly (C2400-1002-TI)
  • Heater element with titanium tube
  • Mounting gaskets/O-rings (pre-installed on assembly)

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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