Balboa G7412 4.0kW 230V M7 Flow-Thru Spa Heater – 2" x 15" Replacement

Key Features

• Reliable 4.0kW Heating Power: Heats spa water quickly and efficiently with 230V operation.
• M7 Technology: Integrated temperature and flow sensors for enhanced safety and simplified installation – no external pressure switch required.
• Flow-Thru Design: Stainless steel housing ensures even heating and corrosion resistance.
• Universal Compatibility: Designed for use with Balboa M7 control systems and many other OEM spa packs.
• Standard Size: 2" x 15" heater fits most spa plumbing setups and heater manifolds.

Product Overview

The Balboa G7412 Spa Heater is a direct replacement for 4.0kW flow-thru heaters used in many 230V spa systems. Built with durable stainless steel and featuring Balboa’s patented M7 sensor technology, this heater delivers safe, reliable performance and easy installation with no additional flow or pressure switches required. It’s a popular solution for spa owners needing to replace or upgrade their existing heater unit.

Specifications

• Model: G7412
• Power: 4.0kW
• Voltage: 230V
• Length: 15"
• Diameter: 2"
• Sensor Technology: M7 dual sensors (built-in)
• Heater Type: Flow-Thru
• Material: Stainless Steel Housing
• Replaces: 58104,G7410,X300940 (Master Spa), X300943 (Master Spa), X801761 (Master Spa)

Compatibility

• Designed for Balboa M7 control systems
• Fits many spa brands using 2" x 15" flow-thru style heaters
• May also work with older spa packs with retrofit wiring

What’s Included

• Balboa G7412 4.0kW Heater Assembly
• Pre-installed M7 sensors and power leads
• *Gaskets and unions not included (sold separately)

Why Buy from Best Buy Pool Supply?

• Authorized Balboa Distributor – Brand-new OEM parts
• Fast shipping with tracking and secure packaging
• No sales tax outside of Massachusetts
• Expert support for heater compatibility and installation questions

Shipping & Warranty

• Warranty: 1-Year Manufacturer Limited Warranty
• Shipping: Ships within 1–2 business days
• Returns: 30-day return policy for unopened/uninstalled items

Need Help Confirming Fit?

Call our spa tech team at (800) 877-1268 or click here — we’ll help you confirm if the G7412 is the right heater for your spa system.