Hybrid Solar Mini Split Air Conditioner Heat Pump
- Rated cooling: 18000 BTU
- Rated heating: 18000+ BTU
- Suggested PV configuration: 4 × 650W panels
- Coverage area: 25~35 m²
The 18,000 BTU solar mini split air conditioner, in the AC/DC hybrid wall-mounted series, is designed for the same solar-first operation as the 12,000 BTU model but for larger rooms and higher cooling demands. Its self-developed solar controller prioritizes photovoltaic output, automatically switches to grid power when sunshine is insufficient, and, with the addition of a battery, stores excess daytime solar for nighttime or low-light operation. To reduce mains use, cooling and heating are provided by a single unit that uses clean solar energy.
The wide-voltage design is adaptable to many nations' mains standards, making it suitable for residential and commercial energy-efficiency renovations in a variety of markets.
- Four-mode intelligent power supply. The full-PV, micro-grid, AC/DC hybrid, and energy-storage modes transition automatically. Solar, mains, and battery power are coordinated automatically, allowing the equipment to operate continuously without the need for manual intervention.
- Wide voltage design for overseas markets. The PV input ranges from 80 to 320 V, and the system is compatible with 110V and 220V mains, allowing it to adapt to the most common home voltages used in various countries.
- DC inverter efficiency. A complete DC inverter drive regulates output to the actual load rather than cycling on and off as a fixed-speed device, resulting in quieter operation, more consistent temperatures, and less wasted energy. Standby draw is limited to ≤2W.
- Designed for harsh situations. Rated from 5% to 95% humidity and stable in high-temperature, high-humidity, and cold environments.
- Cooling and heating in the same unit. A single system covers both for year-round use in various climate zones, with rated cooling of 18,000 BTU and matching heating capacity for bigger rooms.
- R32 refrigerant. The unit employs R32, a refrigerant with a lower global warming potential, and has a standardized piping and wiring configuration, as well as a sturdy chassis designed for long-term operation.
Solar Controller (Energizer HS-3090)
| Parameter | Specification |
|---|---|
| Recommended PV power | 4500 Wp |
| Max PV circuit voltage | 400 V |
| PV operating voltage range | 80–320 V |
| Max PV current | 12 A |
| Max output current | 15 A |
| Rated output voltage | 340 V |
| DC rated power | 3000 W |
| DC peak power | 3500 W |
| Peak photoelectric conversion efficiency | 98% |
| Operating temperature | 10 ℃–65 ℃ |
| Operating humidity | 5%–95% |
| Standby power | ≤2 W |
Complete Unit
| Parameter | Specification |
|---|---|
| Model | 18,000 BTU |
| Core function | Cooling / Heating |
| PV input voltage | 80–320 V |
| Rated cooling capacity (BTU) | 18,000 |
| Rated heating capacity (BTU) | 18,000+ |
| Cooling running current | 6.9–13.09 A |
| Heating running current | 7.2–13.09 A |
| Cooling input power | 1470–2520 W |
| Heating input power | 1600–2340 W |
| Refrigerant | R32 |
| Indoor unit dimensions (mm) | 974 × 381 × 277 |
| Outdoor unit dimensions (mm) | 888 × 498 × 672 |
| Indoor unit weight (kg) | 11 |
| Outdoor unit weight (kg) | 29.5 |
| Standard wiring spec | 4 × 15 mm² |
The 18,000 BTU system employs the same basic system architecture as the 12,000 BTU model, which includes PV panels, an intelligent solar controller, the indoor wall unit, an outdoor inverter unit, and an optional storage/ mains-assist module.
- The panels capture solar energy and supply DC power to the controller during operation. The controller maintains the array at its most productive operating point by perpetually adjusting to PV voltage and current through MPPT (maximum power point tracking). The air conditioner's DC inverter system, which includes the compressor, fan, and control module, is directly driven by the conditioned electricity to provide cooling or heating.
- The system commences operation with photovoltaic (PV) energy when solar output exceeds demand. The controller automatically transitions to mains assist when the light weakens or the PV fails. The addition of a battery allows for the storage and release of surplus solar energy for low-light or nighttime operations. The control system coordinates solar, mains, and storage to increase renewable usage and reduce operating costs, resulting in continuous cooling or heating.
- Suggested configuration: 4 × 650W panels.
