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Rite Fit 4.0KW 230V Flow Thru Heater 27-J0519-5S-K 230V - Bubbles Supply

Rite Fit 4.0KW 230V Flow Thru Heater 27-J0519-5S-K

Part #: 27-J0519-5S-K

$100.29
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About this heater

This HydroQuip 4.0KW 230V flow-through heater assembly (part number 27-J0519-5S-K) is engineered to restore reliable heating in your spa system. The 15-inch flow-through design efficiently transfers heat to water as it circulates through your spa's plumbing, delivering consistent temperature control for relaxing soaks year-round.

Built to HydroQuip's exacting OEM standards, this 4000-watt heater operates on 230V power and handles the heating demands of most residential spa installations. At Bubbles Supply, we guarantee an exact fit for your system and back every heater with our comprehensive 1-year warranty. Plus, we ship same-day to get your spa heating properly again fast. Always verify electrical specifications match your spa's requirements and consider professional installation for optimal performance and safety compliance.

Exact part number

27-J0519-5S-K

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Also known as / Replaces

This part replaces or is interchangeable with:

  • 4.0KW spa heater
  • 4000W flow-thru heater
  • HydroQuip flow-through heater
  • Rite Fit heater assembly

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

Technical specifications

Voltage
230V
Port type
Flow-through (inline)

Plumbing notes

  • Port type: Flow-through (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 staying cold
  • Heater high-limit (HH) fault code on control panel
  • Overheat (OH) fault code on control panel
  • Inconsistent water temperature during a soak
  • Spa heater element failure or burnout

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 tube length matches the 15-inch assembly
  • Check that your control system is compatible with a 4.0KW element rating
  • Inspect heater unions and union seat size before ordering to confirm fitment
  • Note any active fault codes (HH, OH) so you can verify this heater addresses the root cause

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

  • Flow-through heater assembly
  • Heater element
  • Pressure/flow sensor (if included with assembly)
  • Gaskets or O-rings

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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