• Balboa 3.0kW auxiliary-slave heater for spas
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Balboa

Balboa 3.0kW Auxiliary-Slave Heater – M7 Incoloy 800

Balboa 3.0kW Auxiliary-Slave Heater – M7 Incoloy 800

£424.70 GBP
£599.99 GBP £424.70 GBP
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Give a large spa or swim spa the extra heating power it needs with this Balboa 3.0kW auxiliary-slave heater. Built around M7 technology with a high-limit sensor and flow detection, it works alongside your master control box to keep water at temperature even in bigger systems.

  • Heating capacity: 3.0 kW supplementary heating
  • Technology: M7 high-limit sensor with flow detection
  • Element material: Incoloy 800 for corrosion resistance
  • Plumbing connections: 2-inch standard
  • Amperage: 11.5–12.0 amps
  • Required flow rate: 21 GPM
  • Compatibility: Balboa GS and BP series systems
  • Sold individually
  • Built for bigger spas — adds heating capacity where a single heater falls short
  • Corrosion resistant — Incoloy 800 element handles constant water exposure
  • Safety built in — high-limit sensor and flow detection protect the system

Confirm your system is a Balboa GS or BP series before ordering, and check flow rate meets the 21 GPM requirement.

Frequently Asked Questions

How is my sauna or hot tub delivered?

We offer kerbside delivery across the UK and selected European countries. Our team will contact you to arrange a suitable delivery window. Lead times vary by product — typically 2–6 weeks. Please ensure suitable access for large items.

Do I need a professional to install my sauna pod or hot tub?

Most of our sauna pods and hot tubs are designed for straightforward self-installation with the included instructions. However, electrical connections must be carried out by a qualified electrician. We recommend consulting a professional for any groundwork or decking.

What warranty is included?

All products come with a minimum 2-year manufacturer's warranty covering structural defects and components. Extended warranty options are available — contact us for details.

Can I use my hot tub or sauna year-round in the UK?

Yes. Our products are designed for year-round outdoor use in the UK climate. Thermowood and spruce models are treated for weather resistance, and our hot tubs maintain temperature efficiently even in winter.

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