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4.0KW 230V Low Flow Heater C3564-2 240V - Bubbles Supply

4.0KW 230V Low Flow Heater C3564-2

Part #: C3564-2

$429.93
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1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this heater

The HydroQuip C3564-2 is a 4.0kW, 230V low flow heater assembly designed for spas requiring double barrel replacement heaters. This genuine HydroQuip OEM part delivers reliable heating performance for compatible spa systems operating on 240V power. The low flow design makes it ideal for spas with reduced water circulation while maintaining consistent temperature control.

At Bubbles Supply, this exact-fit heater comes with our 1-year warranty and ships the same day you order. As Canada's spa parts authority, we guarantee this HydroQuip heater will match your original specifications perfectly. Professional installation is recommended to ensure proper electrical connections and optimal performance. Always verify your existing heater's voltage, wattage, and connection configuration before ordering to ensure compatibility with your spa system.

Exact part number

C3564-2

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Also known as / Replaces

This part replaces or is interchangeable with:

  • C3564-2 Heater Element
  • HydroQuip Double Barrel Heater
  • Low Flow Heater Assembly

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

Technical specifications

Voltage
230V / 240V

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 high-limit fault (HH error code)
  • Overheat fault or OH error code
  • Spa heating too slowly or losing temperature
  • Heater element burned out or visibly damaged
  • Control panel showing heater-related fault codes

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

Before you buy — quick checklist

  • Confirm your existing heater is 4.0kW and 230V — do not rely on memory, check the label directly
  • Verify your spa uses a double barrel heater configuration before ordering
  • Check whether your spa control system is HydroQuip — this is an OEM part and fitment is specific
  • Inspect the plumbing union connections on your current heater and ensure they match this assembly
  • Confirm the cause of failure before replacing — a faulty high-limit sensor or pressure switch can damage a new heater if not also replaced

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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