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5.5KW 230V Low Flow Heater C3548-1 230V - Bubbles Supply

5.5KW 230V Low Flow Heater C3548-1

Part #: C3548-1

$944.26
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1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this heater

This 5.5kW 230V low flow heater assembly is an OEM replacement part designed for Dimension One Spas. The proportional fast-flow design delivers reliable heating performance at 5500 watts on 230-volt electrical systems, making it ideal for maintaining optimal spa temperatures efficiently.

At Bubbles Supply, this genuine D1 Spas heater comes with our exact fit guarantee, ensuring seamless compatibility with your spa's heating system. We ship same-day from our Canadian facility and back every heater with a full 1-year warranty for complete peace of mind. The low flow design works with reduced water circulation while maintaining consistent heat output. Professional installation is recommended to ensure proper electrical connections and optimal performance – always verify your spa's electrical requirements and heater specifications before installation.

Exact part number

C3548-1

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Also known as / Replaces

This part replaces or is interchangeable with:

  • C3548-1 heater element
  • D1 Spas low flow heater
  • Dimension One 5.5kW heater assembly

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:

  • Spa not heating or heating slowly
  • OH (overheat) fault code on control panel
  • HH (heater high limit) fault code on control panel
  • Heater element burned out or failed
  • Spa water temperature dropping and not recovering
  • Control panel showing heater-related error codes

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

Before you buy — quick checklist

  • Confirm your spa runs on a 230V electrical system — do not install on 120V
  • Verify the fault code is heater-related (OH or HH) before replacing — check flow switch and sensors first
  • Locate the existing heater assembly and match the physical form factor and wiring connections
  • Check that your spa model is a Dimension One Spas unit — this is an OEM part and may not fit other brands
  • Inspect the heater housing for cracking or corrosion — if the manifold is damaged, additional parts may be needed

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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