The GQR90TG compressor is a reliable and efficient refrigeration component designed for domestic and light commercial cooling systems. With a balanced combination of performance, durability, and energy efficiency, this model is widely used in refrigerators and small cooling units that require consistent temperature control. Fridge Compressor 1/3-HP GQR90TG 1PH R134A.

Overview of GQR90TG Compressor
Unlike many standard compressors, the GQR90TG is engineered to deliver stable cooling under medium to high back pressure conditions. Its compact design and strong motor performance make it suitable for technicians looking for a dependable replacement or upgrade option. Fridge Compressor 1/3-HP GQR90TG 1PH R134A.
This compressor operates using R134a refrigerant, which is commonly used in modern refrigeration systems due to its efficiency and environmental compatibility.
Technical Specifications
Here is a clean and structured overview of the GQR90TG compressor specifications:
- Company / Brand: Techsun
- Model: GQR90TG
- Voltage: 220–240V
- Frequency: 50/60 Hz
- Displacement: 9.0 cm³
- Cooling Capacity: 990W
- Motor Type: RSIR (Resistant Start Induction Run)
- Horsepower: 1/3 HP
- Refrigerant: R134a
- Phase: Single Phase
- Application Capacity: Medium / High Back Pressure
- Origin: China
| Specifications | Details |
|---|---|
| COMPANY | TECHSUN |
| MODEL | GQR90TG |
| VOLTAGE | 220-240V |
| FREQUENCY | FIFTY/SIXTY HERTZ |
| DISPLACEMENT | 9.0 cm³ |
| COOLING CAPACITY | 990W |
| MOTOR | Resistant Start Induction Run(RSIR) |
| HORSE POWER | 1/3- |
| REFRIGERANT | R134A |
| PHASE | SINGLE PHASE |
| CAPACITY | MEDIUM/HIGH BACK |
| ORIGIN | CHINA |
Unique Design and Working Pattern

What makes the GQR90TG different is its RSIR motor design, which allows the compressor to start efficiently without requiring a capacitor. This simplifies the electrical setup and reduces maintenance issues over time.
Instead of relying on complex starting mechanisms, the compressor uses resistance-based starting, which provides:
- Smooth startup performance
- Lower risk of electrical failure
- Reduced component cost
This makes it especially useful in regions where voltage fluctuations are common.
Performance and Efficiency
With a cooling capacity of 990W, the GQR90TG delivers strong and consistent refrigeration performance. It is well-suited for:
- Household refrigerators
- Beverage coolers
- Small commercial fridges

Because of its optimized displacement (9.0 cm³), the compressor ensures efficient refrigerant circulation, resulting in faster cooling and lower energy consumption.
Applications in Refrigeration Systems
The GQR90TG is mainly used in systems that require medium to high back pressure operation. Typical applications include:
- Domestic refrigerator units
- Display refrigerators
- Ice cream storage cabinets
- Mini cold storage units
Its versatility makes it a practical choice for both new installations and replacement projects.

Advantages of GQR90TG Compressor
This compressor offers several practical benefits that make it popular among HVAC technicians:
- Durable and compact construction
- Easy installation with single-phase connection
- Stable performance under varying loads
- Low maintenance due to RSIR motor
- Good compatibility with R134a systems
Common Maintenance Tips
To ensure long-lasting performance, follow these simple maintenance practices:
- Always use the correct refrigerant (R134a)
- Check voltage supply before installation
- Ensure proper airflow around the compressor
- Avoid overcharging refrigerant
- Inspect wiring connections regularly
Proper installation and routine checks can significantly extend the compressor’s life.
Conclusion
The GQR90TG 1/3 HP fridge compressor is a practical and efficient solution for medium-capacity refrigeration needs. Its RSIR motor design, reliable cooling output, and compatibility with R134a refrigerant make it a smart choice for technicians and system designers. Whether used in household refrigerators or small commercial units, this compressor delivers consistent and dependable performance.
