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5.5KW 230V Flow-Thru Heater 48-SP55-FBT 230V - Bubbles Supply

5.5KW 230V Flow-Thru Heater 48-SP55-FBT

Part #: 48-SP55-FBT

$468.22
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1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this heater

The HydroQuip 5.5KW 230V Flow-Thru Heater (48-SP55-FBT) is a premium titanium heating element designed for HydroQuip spa systems requiring reliable 230-volt operation. This flow-through M7 heater assembly delivers consistent 5.5kW heating power to maintain your spa's optimal temperature, featuring HydroQuip's proven fixed-element design that ensures years of dependable performance.

Built to OEM specifications, this genuine HydroQuip heater provides the exact fit your spa needs to restore proper heating function. At Bubbles Supply, we guarantee precise fitment and back every heater with our comprehensive 1-year warranty, plus same-day shipping to get your spa running quickly. The titanium construction resists corrosion and scaling, making this heater ideal for spas experiencing heating issues (HH codes) or overheating problems (OH codes). Professional installation recommended to ensure proper electrical connections and system integration with your spa's control system.

Exact part number

48-SP55-FBT

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Also known as / Replaces

This part replaces or is interchangeable with:

  • 48-SP55-FBT Heater Element
  • HydroQuip 5.5kW Heater
  • HydroQuip Flow-Thru Heater
  • M7 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 not heating or heating very slowly
  • HH error code displayed on control panel
  • OH error code displayed on control panel
  • Spa trips breaker during heating cycle
  • Water temperature dropping and not recovering
  • Burned or corroded heating element causing no heat

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 before ordering
  • Verify your spa is wired for 230V — do not install on a 120V system
  • Check your existing heater's kW rating matches 5.5kW
  • Inspect heater manifold and unions for damage before reinstalling — replace if cracked or corroded
  • Confirm this is a flow-through (inline) heater configuration, not a torpedo/dry-fire style
  • Note whether your current heater fault is HH (high limit) or OH (overheat) to rule out a sensor or flow issue rather than a failed element

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

Install difficulty: Hard — Technician recommendedTypically 60–120 minutes

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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