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4.0KW 240V Heater Assembly 26-3330-5S-K 240V - Bubbles Supply

4.0KW 240V Heater Assembly 26-3330-5S-K

Part #: 26-3330-5S-K

$136.40
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1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this heater

The HydroQuip 4.0KW 240V Heater Assembly (26-3330-5S-K) is a premium replacement heating element designed for compatible spa and hot tub systems requiring 4000-watt heating capacity. This 15-inch long heater assembly operates on standard 240V electrical systems and comes equipped with convenient 8-inch leads for streamlined installation. Built to HydroQuip's exacting OEM standards, this heater assembly delivers reliable performance and efficient heat transfer to keep your spa water at optimal temperature.

At Bubbles Supply, we guarantee this heater assembly will be an exact fit for your compatible spa system, backed by our comprehensive 1-year warranty and same-day shipping on in-stock orders. The robust construction and precision engineering ensure long-lasting performance that matches your spa's original specifications. Always verify electrical requirements and consult your spa's wiring diagram before installation to ensure proper voltage and amp compatibility with your system's control panel.

Exact part number

26-3330-5S-K

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Also known as / Replaces

This part replaces or is interchangeable with:

  • 4KW heater tube
  • hot tub heating element
  • HydroQuip heater element
  • spa heater assembly

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

Technical specifications

Voltage
240V

Common symptoms this part fixes

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

  • Spa water won't heat or heats very slowly
  • HH (High Heat) or OH (Overheat) fault code on control panel
  • Heater element burned out or visibly corroded
  • Spa reaches temperature then immediately drops
  • Control panel displays heater-related error and shuts down

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

Before you buy — quick checklist

  • Confirm your spa control system is rated for 240V / 4.0KW — do not install on a 120V system
  • Verify the heater tube length and lead wire length match your existing assembly (this unit is 15 inches with 8-inch leads)
  • Check your existing heater's pressure switch configuration before removal — note orientation for reinstallation
  • Confirm your control pack or spa pack is a HydroQuip unit and is compatible with OEM replacement heaters
  • Inspect heater housing (manifold) for scale buildup or corrosion — a damaged manifold should be replaced at the same time

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 240V heater assembly (26-3330-5S-K)
  • Pre-attached 8-inch lead wires

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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