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5.5KW 230V Low Flow Heater C3550-1 230V - Bubbles Supply

5.5KW 230V Low Flow Heater C3550-1

Part #: C3550-1

$336.02
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1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this heater

This genuine OEM heater assembly is designed specifically for Dimension One Spas circulation pump systems. The C3550-1 delivers 5.5kW of heating power at 230V, featuring Laing's proven low-flow technology that maximizes energy efficiency while maintaining optimal water temperature. This factory-specification heater ensures your spa operates exactly as designed, with the reliability D1 owners expect.

At Bubbles Supply, we guarantee this heater will be an exact fit for your Dimension One spa's circulation system. Every C3550-1 ships same-day when ordered before our cutoff, backed by our comprehensive 1-year warranty for complete peace of mind. Professional installation is recommended due to electrical connections and plumbing requirements – always verify your spa's voltage and amperage specifications before installation to ensure proper operation.

Exact part number

C3550-1

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • D1 Circ Heater
  • Dimension One Low Flow Heater Assembly
  • Laing Circ Heater 5.5kW

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

Technical specifications

Voltage
230V

Common symptoms this part fixes

If your spa is showing any of these signs, this part is likely your fix:

  • DR error code on display
  • FL1 or FLO fault code indicating flow issue
  • ICE warning triggered by low temp detection
  • Spa not reaching set temperature
  • Spa water staying cold despite circ pump running
  • Intermittent heating with circulation pump system

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

Before you buy — quick checklist

  • Confirm your spa runs a dedicated circulation pump system — this heater is not for standard two-speed jet pump configurations
  • Verify your spa's supply voltage is 230V before ordering
  • Check your current heater element for the C3550-1 part number stamped on the housing or wiring harness tag
  • Diagnose whether the fault is the heater element or the circ pump itself before replacing — a failed Laing circ pump will also trigger DR and FLO codes
  • Have a qualified electrician on hand — this involves hardwired 230V connections

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

Install difficulty: Hard — Technician recommendedTypically 60-90 minutes

What's in the box

  • C3550-1 heater assembly
  • Replacement O-rings or gaskets (verify at time of shipment)

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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