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SMTD 1000 5.5KW Flow Thru Heater BUNDLE-K20 - Bubbles Supply

SMTD 1000 5.5KW Flow Thru Heater BUNDLE-K20

Part #: BUNDLE-K20

$1207.09
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1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this heater

The SMTD 1000 5.5KW Flow Thru Heater BUNDLE-K20 is a complete control system replacement for spas requiring ACC Smart Touch 1000 technology. This comprehensive bundle delivers 5.5KW heating power with dual voltage capability (115/230V), making it compatible with various residential spa electrical configurations. The K-20 bundle includes the essential components needed for reliable temperature control and heating performance.

Our exact fit guarantee ensures this ACC heater bundle matches your original equipment specifications perfectly. With same-day shipping and our full 1-year warranty, you get the confidence of professional-grade parts with fast delivery. This flow-through design integrates seamlessly with existing plumbing systems for efficient heat transfer. Verify your spa's voltage requirements and heating capacity before installation to ensure optimal performance and safety compliance.

Exact part number

BUNDLE-K20

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • ACC flow-through heater assembly
  • ACC Smart Touch 1000 heater bundle
  • K-20 heater bundle
  • SMTD1000 heater

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

Technical specifications

Voltage
115V/230V dual voltage
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:

  • No heat or spa won't reach set temperature
  • Heater error codes on ACC Smart Touch 1000 control panel
  • OH (overheat) fault that won't clear
  • HH (high heat) fault being triggered
  • Inconsistent water temperature
  • Complete heater failure with no output

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

Before you buy — quick checklist

  • Confirm your spa uses an ACC Smart Touch 1000 (SMTD 1000) control system — this bundle is not universal
  • Verify your spa's electrical supply matches 115V or 230V before installation
  • Check your existing heater's kilowatt rating — confirm 5.5KW is correct for your spa size and plumbing configuration
  • Measure your existing heater unions and plumbing connections before ordering to confirm fitment
  • Note any active fault codes on your current control panel before replacing — document them for comparison post-install

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

Install difficulty: Hard — Technician recommendedTypically 2–4 hours

What's in the box

  • SMTD 1000 5.5KW flow-through heater assembly
  • ACC Smart Touch 1000 control components
  • Installation hardware

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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