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Squareback 4.0kKW 230V Low Flow Heater 26-3236-1A-5T-K 230V - Bubbles Supply

Squareback 4.0kKW 230V Low Flow Heater 26-3236-1A-5T-K

Part #: 26-3236-1A-5T-K

$846.34
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Fits these systems

HydroQuip

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

Before you buy — quick checklist

  • Confirm your spa runs on 230V — do not install on a 120V system
  • Verify your existing heater is a squareback-style assembly, not a tailpiece or inline style
  • Match the kW rating — this is a 4.0kW unit, confirm your system calls for 4.0kW and not a different wattage
  • Check plumbing connection size and configuration on your current heater before ordering
  • Note your existing heater's HydroQuip part number from the label and cross-reference to this SKU
  • Confirm this is a low flow application — standard flow systems require a different heater

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

Exact part number

26-3236-1A-5T-K

Save this for ordering or warranty claims

Technical specifications

Voltage
230V

Common symptoms this part fixes

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

  • No heat or spa stays cold
  • Spa overheating or running too hot
  • HH error code on spa display
  • OH error code on spa display
  • Heater element failure
  • Spa trips breaker due to faulty heater assembly

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

About this heater

This HydroQuip Squareback 4.0kW 230V Low Flow Heater delivers reliable heating performance for spas equipped with HydroQuip systems. The low flow design operates efficiently at reduced circulation rates while maintaining optimal water temperature. Built to HydroQuip's OEM specifications, this 26"x14" squareback-style heater assembly handles 230-volt electrical requirements and addresses common heater issues including no heat and overheating problems.

At Bubbles Supply, we guarantee this heater is the exact fit for your spa's HydroQuip heating system. Every genuine HydroQuip heater ships same-day and includes our comprehensive 1-year warranty for complete peace of mind. Before installation, verify your existing heater's dimensions, voltage requirements, and connection configuration match this unit's specifications. Professional installation recommended for optimal performance and safety.

Also known as / Replaces

This part replaces or is interchangeable with:

  • 26-3236-1A-5T-K heater assembly

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

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.

AI Fitment Assistant

Tell us your spa model and we will confirm this part fits before you buy.

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