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4.5kW 230V Flow-Thru Heater 26-0047 230V - Bubbles Supply

4.5kW 230V Flow-Thru Heater 26-0047

Part #: 26-0047

$134.00
In stock — ships today
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1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this heater

This HydroQuip CS800 4.5kW 230V flow-through heater assembly is designed for residential spa systems requiring reliable, efficient heating performance. Operating at 230 volts with 4.5 kilowatts of power, this OEM heater delivers consistent water temperature control for your hot tub experience. The flow-through design ensures optimal heat transfer while protecting the heating element from dry firing.

At Bubbles Supply, we guarantee this heater is an exact fit for your HydroQuip CS800 system, backed by our comprehensive 1-year warranty and same-day shipping on in-stock items. This genuine HydroQuip replacement part resolves common heating issues including "HH" (high heat) and "OH" (overheat) error codes. Professional installation is recommended to ensure proper electrical connections and plumbing integration. Always verify your existing heater's specifications before ordering to confirm compatibility with your spa's electrical system.

Exact part number

26-0047

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Also known as / Replaces

This part replaces or is interchangeable with:

  • 4.5kW HydroQuip heater
  • flow-through heater assembly
  • HydroQuip CS800 heater
  • inline spa heater

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:

  • HH (high heat) error code on control panel
  • OH (overheat) error code on control panel
  • Spa not reaching set temperature
  • Heating element failure — no heat output
  • Tripped GFCI or breaker linked to heater circuit
  • Inconsistent or erratic water temperature

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

Before you buy — quick checklist

  • Confirm your spa runs a HydroQuip CS800 control system — check the pack label inside the equipment bay
  • Verify your spa is wired for 230V before ordering — this heater is not dual-voltage
  • Check your existing heater tube dimensions and union sizes to confirm this assembly will drop in
  • Inspect the heater manifold for cracking or scaling — if the housing is damaged, confirm this replacement matches your existing plumbing layout
  • Note whether your HH or OH fault is triggered by the heater sensor or the hi-limit sensor — replacing the heater alone won't fix a failed sensor

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

Install difficulty: Medium — Some experience neededTypically 45–90 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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