🚀 New launch promo — 10% off orders over $300. Use code LAUNCH10
Bubbles Supply
Not sure which part you need? Upload a photo and we'll find it. →
4.0kW Heater Assembly 26-C3072-5T-KF 240V - Bubbles Supply

4.0kW Heater Assembly 26-C3072-5T-KF

Part #: 26-C3072-5T-KF

$992.70
In stock — ships today
Qty
🔒 Secure checkout↩️ 30-day returns✅ 1-year warranty
Add to B2B order list

Not sure this fits?

Send us a photo of your old part — we'll confirm the right replacement before you order.

Upload a Photo
1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this heater

This HydroQuip 4.0kW heater assembly (part number 26-C3072-5T-KF) is designed to replace faulty heating elements in compatible spa systems. Operating at 240V, this aftermarket heater assembly includes an integrated flow switch for safe operation and delivers reliable 4000-watt heating performance to restore your spa's temperature control.

Built to exact OEM specifications, this heater assembly guarantees an exact fit for your HydroQuip system while solving common "HH" and "OH" error codes that indicate heater malfunctions. Bubbles Supply backs this replacement part with our comprehensive 1-year warranty and ships same-day for fast repairs. Proper installation requires matching voltage requirements and ensuring adequate water flow through the system before energizing the heater element.

Exact part number

26-C3072-5T-KF

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • 26-C3072-5T-KF heater
  • 4kW spa heater element
  • HydroQuip 4000W heater
  • HydroQuip 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:

  • HH error code on spa display
  • OH error code on spa display
  • Spa not heating or slow to reach set temperature
  • Heater cycling off prematurely
  • Spa water stays cold despite pump running normally
  • Heater element burned out or failed continuity test

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

Before you buy — quick checklist

  • Confirm your spa control system is a HydroQuip unit and matches this part number exactly
  • Verify your spa operates on 240V — do not install on a 115V system
  • Check that your existing heater assembly carries the same kW rating (4.0kW) before swapping
  • Inspect the flow switch and pressure switch on your current system — if those components failed, they may have caused the heater failure and may need separate replacement
  • Ensure adequate water flow through the heater tube before energizing — dry firing will immediately damage the new element

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

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

Warranty

1 year 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.

🔒 Secure checkout · SSL encrypted·🇺🇸🇨🇦 Serving the US and Canada·↩️ 30-day hassle-free returns·📦 Same-day fulfillment