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EG4 FlexBOSS18 13kW AC Hybrid Inverter (1589004)
EG4

EG4 FlexBOSS18 13kW AC Hybrid Inverter (1589004)

$3,210.00
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The EG4 FlexBOSS18 Hybrid Inverter delivers professional-grade performance at an accessible price point, making it the ideal choice for both installers and DIY enthusiasts looking for a cost-effective hybrid solar solution. Designed to maximize efficiency and savings, this inverter offers 13kW continuous output (with PV), 18kW maximum solar input, and 10kW battery-only output capability. Whether you’re aiming to reduce reliance on the grid or build a powerful off-grid system, the FlexBOSS18 provides the perfect balance of affordability, performance, and versatility.

Certifications & Compliance

UL 1741 Listed  |  UL 1741 SA (Grid Support)  |  NEMA-3R Enclosure  |  10-Year Manufacturer Warranty  |  NEC Rapid Shutdown Compliant

Key Features:

  • High Power Output: 13kW continuous output with PV, 18kW solar input, and 10kW battery-only output.
  • Versatile Compatibility: Works flawlessly with EG4 batteries and pairs seamlessly with the EG4 GridBOSS MID for enhanced functionality.
  • Certified & Compliant: UL1741 certification for safety and reliability.
  • Cost-Effective Hybrid Solution: Affordable entry into hybrid solar with professional-grade capabilities.
  • Flexible Installation: Designed for easy integration into both residential and commercial setups.

Seamless Integration with EG4 GridBOSS MID

The FlexBOSS18 pairs perfectly with the EG4 GridBOSS MID, optimizing energy management and grid interaction. This integration reduces installation costs, simplifies the setup, and eliminates the need for additional breakers, transfer switches, and more, all within one compact solution. It also enables time-of-use optimization, load shifting, and backup power prioritization, giving you enhanced control over your energy use. By combining the FlexBOSS18 with the EG4 GridBOSS MID, users can maximize energy efficiency, reduce dependency on the grid, and take full control of their solar energy system.

Why Choose the EG4 FlexBOSS18?

The FlexBOSS18 offers higher power output, increased PV capacity, and enhanced hybrid capabilities at an accessible price point. Its UL1741 certifications ensure compliance with strict industry regulations, making it a reliable and future-proof investment for both grid-tied and off-grid applications.

Elevate Your Energy System

Discover the power, flexibility, and affordability of the EG4 FlexBOSS18 Hybrid Inverter. Whether you’re upgrading an existing system or starting from scratch, the FlexBOSS18 delivers the performance and reliability needed to take control of your energy future.

Have any questions? Email us at info@solwel.com or give us a call at (346) 432-4228

Why Buy From Solwel?

  • Free Shipping on Orders Over $10,000 — Fast fulfillment from our Houston and Dallas warehouses
  • Authorized Distributor — Genuine manufacturer-backed products with full warranty support
  • Expert Technical Support — Our team knows these products inside and out. Call us at (346) 432-4228
  • Installer Pricing Available — Contact us for volume pricing and contractor accounts
  • Stocked in Texas — Reduced lead times for Southwest and national projects

Frequently Asked Questions — EG4 FlexBOSS18 Hybrid Inverter

What makes the FlexBOSS18 an “AC hybrid” inverter?

The EG4 FlexBOSS18 is an AC-coupled hybrid inverter, meaning it connects to the AC side of your system rather than directly to solar panels via DC strings. This makes it easy to add battery backup to an existing solar installation without replacing your current solar inverter.

Does the FlexBOSS18 work without batteries?

Yes. The FlexBOSS18 can operate in grid-tied mode without batteries. Battery storage can be added at any time to enable backup power and increased self-consumption.

What batteries are compatible with the EG4 FlexBOSS18?

The FlexBOSS18 is designed for use with EG4 batteries and supports standard LFP battery communication protocols. Contact us at (346) 432-4228 to confirm compatibility with your battery.

What certifications does the FlexBOSS18 carry?

The EG4 FlexBOSS18 is UL 1741 listed. Always verify local utility interconnection requirements with your installer before purchasing.

What size home is the FlexBOSS18 suitable for?

At 13kW continuous output, the FlexBOSS18 is well-suited for most residential homes including those with central HVAC, electric appliances, and EV charging. For larger homes or higher loads, consider the FlexBOSS21 (16kW).

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