18000 BTU Air Conditioner - Solar Aircon Unit
REF-SAC-18
Stay cool for free with direct solar power.
The Refria 18000 BTU (5.0kW) solar aircon unit is designed for large living rooms, classrooms, and medium telecom shelters. It requires no batteries or inverters, automatically balancing solar DC power and grid AC power to cut your daytime electricity bills by up to 97%.
Key Highlights:
Capacity: 18000 BTU / 5000W (Perfect for 25-35㎡)
Solar Setup: Requires 4 × 550W solar panels
Efficiency: SEER 35 (Solar Mode) / SEER 23 (Grid Mode)
Working Temp: -10°C to +52°C (T3 Environment)
Refrigerant: Eco-friendly R32
The Refria 18000 BTU (5.0kW) solar aircon unit is designed for large living rooms, classrooms, and medium telecom shelters. It requires no batteries or inverters, automatically balancing solar DC power and grid AC power to cut your daytime electricity bills by up to 97%.
Key Highlights:
Capacity: 18000 BTU / 5000W (Perfect for 25-35㎡)
Solar Setup: Requires 4 × 550W solar panels
Efficiency: SEER 35 (Solar Mode) / SEER 23 (Grid Mode)
Working Temp: -10°C to +52°C (T3 Environment)
Refrigerant: Eco-friendly R32
Quantity:
18000 BTU Air Conditioner - Solar Aircon Unit
AC/DC Hybrid solar aircon unit with up to 97% daytime electricity savings
ETL
CE
ISO
IEC
SASO
SEER 35
Max Efficiency
4 × 550W
Solar Panels Required
25-35 ㎡
Recommended Area
Why Choose This 18000 BTU Air Conditioner?
The 18000 BTU (5000W) model is a powerful solar aircon unit designed for larger spaces, such as spacious living rooms, classrooms, and medium-sized commercial offices. Featuring Direct Solar Drive technology, this 18000btu air conditioner runs directly off your solar panels without needing batteries or inverters. It operates on 100% solar energy during sunny days and automatically switches to the grid at night, providing a highly efficient and sustainable cooling solution.
How the Solar Aircon Unit Works
Solar Panels
4 x 550W
➔
DC Breaker
Protection
➔
AC/DC Outdoor Unit
Auto-Balance
Grid Power (AC) Backup
18000 BTU Technical Specifications
| Model | GL-ADC18GW-XA-R32 |
| Power Supply Source | 220-240V 50Hz/60Hz |
| Cooling Capacity | 5000 W / 18000 BTU |
| Heating Capacity | 5100 W |
| Rated Power Consumption (Cooling) | 1520 W |
| DC Input Range | DC 90-380V (MAX 15A) |
| Indoor Noise Level | 45 dB(A) |
| Outdoor Noise Level | 52 dB(A) |
| Refrigerant | R32 / 920g |
| Recommended Solar Panels | 4 × 550W |
Ideal Applications for 18000 BTU

Classrooms & Large Living Rooms
Perfect for 25-35㎡ spaces. Keep students or family members cool during peak daytime hours using purely solar energy from your solar aircon unit.

Medium Offices & Retail
Highly efficient cooling for small to medium commercial spaces. Drastically reduce your business's daytime electricity bills while keeping customers comfortable.

Medium Telecom Shelters
Provides powerful and reliable targeted cooling for larger telecom cabinets and equipment rooms in areas with unstable grid power.
Estimated Economic Benefits
By using this 18000 BTU air conditioner, you can drastically reduce your daytime electricity bills. Here is a typical case study based on 180 operating days per year:
| Metric | Data |
|---|---|
| Annual Electricity Saving | 1238 kWh |
| Payback Time (USA Example) | 23 Months (At $1.20/kWh) |
| Payback Time (Germany Example) | 10 Months (At €2.87/kWh) |
* Data is for reference only. Actual savings depend on local electricity rates, sunshine hours, and usage habits.
Frequently Asked Questions
Q: Does this 18000btu air conditioner work at night?
A: Yes. The hybrid system automatically switches to AC grid power when there is no sunlight, ensuring uninterrupted cooling.
Q: Do I need a battery for this solar aircon unit?
A: No battery is required. The unit uses a direct DC drive. However, you can add a battery backup system if you want completely off-grid night operation.
Q: How many solar panels do I need for this 18000 BTU unit?
A: We recommend connecting 4 standard 550W solar panels to achieve optimal performance.
Ready to Upgrade Your Cooling System?
Contact us today for custom configurations, pricing, and technical support for the 18000 BTU solar aircon unit.


















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