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5.5KW 230V 90-degree Flow Thru Heater A2550-5350ET 230V - Bubbles Supply

5.5KW 230V 90-degree Flow Thru Heater A2550-5350ET

Part #: A2550-5350ET

$447.58
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About this heater

The HydroQuip A2550-5350ET is a 5.5kW flow-through heater assembly designed for 230V spa systems, particularly Arctic Spas models. This 90-degree configuration heater delivers reliable heat exchange for consistent water temperature control in your hot tub system. Built to HydroQuip's OEM specifications, this genuine replacement part ensures proper fitment and performance restoration.

At Bubbles Supply, we guarantee an exact fit for your spa with same-day shipping and comprehensive 1-year warranty coverage. This flow-through design integrates seamlessly into your existing plumbing configuration, making replacement straightforward for experienced technicians. The 230V power requirement and 5.5kW output make this heater suitable for larger spa installations requiring robust heating capacity. Verify your current heater's voltage and power specifications before ordering to ensure proper electrical compatibility and optimal heating performance.

Exact part number

A2550-5350ET

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Also known as / Replaces

This part replaces or is interchangeable with:

  • 5.5kW spa heater
  • 90-degree heater assembly
  • Arctic Spas replacement heater
  • HydroQuip flow-through heater

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

Technical specifications

Voltage
230V
Port type
90-degree flow-through

Plumbing notes

  • Port type: 90-degree 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:

  • No heat or spa won't reach set temperature
  • Heater error code on control panel (HH or OH fault)
  • Spa heats intermittently or cycles off early
  • Visible corrosion or mineral buildup on existing heater element
  • Leaking at heater manifold or unions

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 is a 90-degree flow-through configuration, not an inline straight heater
  • Check the kW rating on your current heater label — this is a 5.5kW unit
  • Confirm union size and thread type match your existing plumbing connections before ordering
  • Note any active fault codes (HH = high heat, OH = overheat) to confirm heater is the failed component and not a sensor or flow issue

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

  • 5.5kW 90-degree flow-through heater assembly
  • Heater unions (verify inclusion at time of order)
  • Replacement 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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