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Rite Fit 5.5KW 230V Flow Thru Heater 27-J0425-7S-K 230V - Bubbles Supply

Rite Fit 5.5KW 230V Flow Thru Heater 27-J0425-7S-K

Part #: 27-J0425-7S-K

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

About this heater

The Rite Fit 5.5KW 230V Flow Thru Heater (27-J0425-7S-K) is a premium HydroQuip replacement heater assembly designed for spas and hot tubs requiring reliable flow-through heating. This 5.5-kilowatt, 230-volt unit delivers consistent water heating performance with the trusted engineering that makes HydroQuip an industry standard. The Balboa Universal Rite-Fit design ensures compatibility across multiple spa brands while providing efficient heat transfer through its flow-through configuration.

At Bubbles Supply, we guarantee an exact fit for your spa with our authentic HydroQuip parts, backed by our comprehensive 1-year warranty. Every heater ships same-day when ordered before our cutoff time, getting your spa back to perfect temperature fast. This OEM-quality replacement handles both high heat (HH) and overheat (OH) conditions effectively. Always verify your existing heater's voltage and kilowatt specifications before installation to ensure proper compatibility and safe operation.

Exact part number

27-J0425-7S-K

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Also known as / Replaces

This part replaces or is interchangeable with:

  • 27-J0425-7S-K Heater
  • HydroQuip 5.5KW Heater Assembly
  • Rite-Fit Flow Thru Heater

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

Technical specifications

Voltage
230V
Port type
Flow-through

Plumbing notes

  • Port type: Flow-through

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
  • Heater error code on control panel (HH or OH fault)
  • Water temperature dropping and not recovering
  • Heater element failure — no heat output
  • Spa displaying high heat or overheat fault and shutting down

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

Before you buy — quick checklist

  • Confirm your existing heater is rated 230V — do not install on 120V systems
  • Verify your existing heater is 5.5KW — mismatched wattage can trip breakers or damage controls
  • Check that your spa controller is compatible with a flow-through heater configuration
  • Note your current heater's union size and plumbing layout before ordering
  • Confirm the HH (high heat) and OH (overheat) sensor configuration matches your existing setup
  • Record your existing heater's part number from the label to cross-reference fitment

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

  • Heater assembly (5.5KW, 230V flow-through)
  • Pre-installed HH and OH sensors

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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