EG4 Window Hybrid Unit Solar DC / AC

EG4 Solar Window Air Conditioner (12K BTU)

Overview

The EG4 Solar Window Air Conditioner is a high-efficiency solar-hybrid window A/C designed to provide reliable cooling with direct solar integration and seamless grid backup. Built for flexibility and ease of use, this unit is ideal for rooms, apartments, garages, workshops, or any space where installing a traditional mini-split system isn’t practical.

With 12,000 BTU of cooling capacity, the system can operate on solar power alone, grid power alone, or a hybrid combination of both—automatically adjusting to deliver uninterrupted comfort while maximizing energy savings.

Note: This unit only cools, it is not a heater.

Key Specifications & Features

Performance

• Cooling Capacity: 12,000 BTU (nominal)
  Suitable for spaces approximately 400–650 sq ft, depending on insulation and climate.
• NO Heating
• Variable-Speed Inverter Compressor:
  Adjustable output levels (25%, 50%, 75%, 100%) optimize efficiency and reduce energy consumption compared to traditional single-speed units.
• Advanced Inverter Technology:
  Provides smooth operation, eliminates high startup surge, and maintains consistent indoor temperatures.

Hybrid Solar + Grid Operation

• Direct Solar Integration:
  Connect a solar array (recommended ~1,500W, VOC range ~80V–380V) using standard MC4 connectors. The unit automatically prioritizes solar energy when available.
• Grid Backup Capability:
  Plugs into a standard 120V outlet and seamlessly supplements power when solar production is insufficient.
• No Batteries or External Inverter Required:
  Designed to run directly from solar DC input or grid AC power without additional system components.

Efficiency & Operation

• High Efficiency Rating:
  Approximately 15 CEER (~17 SEER2 equivalent) when operating on grid power.
• Smart Energy Management:
  Automatically blends solar and grid input to meet cooling demand while optimizing energy usage.

Installation & User Experience

• Window-Ready Design:
  Fits standard double-hung windows (minimum opening ~24″ W × 36″ H) and includes insulation materials for a tight seal.
• DIY-Friendly Installation:
  No refrigerant handling, ductwork, or professional installation required—installs like a traditional window A/C.
• User Controls:
  • Built-in touch control panel
  • Remote control (included)
  • App connectivity for scheduling and remote operation
• Self-Evaporating System:
  Condensate is automatically evaporated—no drain line needed.

What’s Included

• EG4 Solar Window Air Conditioner (pre-tested for solar, grid, and hybrid operation).
• Remote control with batteries
• 120V power cord
• Self-adhesive insulation gasket
• MC4 solar disconnect tool
• 10 meters of solar cable
• Installation and operation manual