Danfoss GL45AA compressor R134a 1/8 HP LBP specifications replacement B48H technical data cooling capacity
Mbsmpro.com, Danfoss, GL45AA, 1/8 hp, LBP, Cooling, R134a, 81-96 W, 0.69-0.71 A, 1Ph 220‑240V 50Hz, LBP, RSIR, −35°C to −10°C, Freezing
Complete Technical Specifications
| Specification | Details |
|---|---|
| Model | GL45AA (also known as GL45AAa/GL45AAb) |
| Utilisation (mbp/hbp/lbp) | LBP (Low Back Pressure) |
| Domaine (Freezing/Cooling) | Freezing and Cooling |
| Cooling wattage at -23°C | 96 W (ASHRAE conditions) refritech.co.uk |
| Cubic feet can this compressor cool? | Approximately 3-5 cubic feet |
| Litres can this compressor cool? | 85-140 liters |
| Kcal/h | 96 kcal/h (ASHRAE), 70-96 kcal/h range www.skh-kaeltetechnik.de |
| TON | 0.023 tons (approximately 1/43 HP refrigeration) |
| Oil Type and quantity | ISO VG 19-32 ESTER, 175-265 cm³ www.skh-kaeltetechnik.de |
| Horsepower (HP) | 1/8 HP (0.125 HP / 0.15 CV) |
| Refrigerant Type | R134a (compatible with R1234yf) |
| Power Supply | 220-240V 50Hz, 1 Phase |
| Cooling Capacity BTU | 327-383 BTU/h (depending on conditions) |
| Motor Type | RSIR (Resistance Start Induction Run) |
| Displacement | 4.56 cm³ (4.56cc) www.scribd.com |
| Winding Material | Copper |
| Pressure Charge | Pre-charged from factory |
| Capillary | Capillary tube expansion system |
| Model Fridge or refrigerator can work with this compressor | Household refrigerators, beverage coolers, wine coolers, water dispensers, beer dispensers, ice makers, small freezers www.dtngroup.ro |
| Temperature function | -35°C to -10°C evaporating temperature www.skh-kaeltetechnik.de |
| With fan or no | Static cooling (no fan on compressor) |
| Commercial or no | Both commercial and domestic applications |
| Amperage in function | 0.69-0.71 A running, 7.5 A locked rotor www.skh-kaeltetechnik.de |
| LRA (Locked Rotor Amps) | 7.5 A |
| Type of relay | PTC relay (PTC 3003 – K100) www.skh-kaeltetechnik.de |
| Capacitor or no and value | Starting capacitor 47-56 μF 330V (for CSIR version) |
| Country of origin and exporting countries | Made in Spain by Huayi, exported worldwide |
Efficiency Metrics (COP) Performance Table
The GL45AA’s performance varies depending on operating conditions. Here’s how it performs across different evaporating temperatures:
| Evaporating Temp (°C) | -30 | -25 | -23.3 | -20 | -15 | -10 | 0 | 4 | 10 |
|---|---|---|---|---|---|---|---|---|---|
| Cooling Capacity (Watts) | 60 | 86 | 96 | 117 | 154 | 195 | – | – | – |
| Power Consumption (Watts) | 87 | 100 | 105 | 115 | 133 | 153 | – | – | – |
| COP (W/W) | 0.80 | 1.00 | 1.06 | 1.18 | 1.34 | 1.48 | – | – | – |
| Current (A) | 0.65 | 0.69 | 0.71 | 0.75 | 0.80 | 0.87 | – | – | – |
Test conditions: Condensing temp 55°C, Ambient 32°C, ASHRAE standards
www.skh-kaeltetechnik.de
Detailed Performance at Different Conditions
CECOMAF Standards (LBP Applications)
| Condition | Value |
|---|---|
| Cooling Capacity at -25°C | 81 W |
| Input Power | 100 W |
| COP | 0.81 W/W |
| Current Draw | 0.69 A |
| EER | 0.70 kcal/Wh |
ASHRAE Standards (LBP Applications)
| Condition | Value |
|---|---|
| Cooling Capacity at -23.3°C | 96 kcal/h (112 W) |
| Input Power | 105 W |
| COP | 1.06 W/W |
| Current Draw | 0.71 A |
| EER | 0.91 kcal/Wh |
Physical Dimensions & Weight
| Dimension | Measurement |
|---|---|
| Net Weight | 8.0-8.3 kg |
| Height | 175-176 mm |
| Diameter | 19.09 mm (cylinder) |
| Stroke | 15.94 mm |
| Suction Line ID | 6.5 mm |
| Discharge Line ID | 4.9 mm |
| Mounting | Standard Ø16 holes (170×70 mm) |
Electrical Specifications
| Parameter | Value |
|---|---|
| Voltage Range | 187-264 V |
| Frequency | 50 Hz |
| Phase | Single Phase (1PH) |
| Main Winding Resistance | 24.57-25.00 Ω @ 25°C |
| Start Winding Resistance | 30.00-32.63 Ω @ 25°C |
| Locked Rotor Current | 7.5 A |
| Max Continuous Current | 1.0 A |
| Thermal Protector | MRP318LZ / T0453 / AF37FU |
Where You’ll Find This Compressor
The GL45AA is incredibly versatile and shows up in all sorts of cooling equipment:
- Household refrigerators (small to medium size)
- Beverage coolers and drink dispensers
- Wine coolers (compact units)
- Water dispensers and coolers
- Beer dispensers and kegerators
- Ice makers (small commercial units)
- Vending machines (beverage type)
- Mini bars and hotel refrigerators
- Display cases (small merchandisers)
This compressor is particularly popular because it handles the -35°C to -10°C temperature range beautifully, making it perfect for both refrigeration and light freezing applications
www.dtngroup.ro.
5 Compressor Replacements (Same R134a Gas)
If your GL45AA has given up the ghost, here are five solid replacements that use the same R134a refrigerant:
- B48H (Cubigel/Huayi) – The official replacement for GL45AA, works with both R134a and R1234yf frigopartners.com
- GVM38AA (Cubigel) – Direct equivalent, same specifications www.prokes-auto.com
- GLY45AAA (Cubigel) – Alternative version with HE static cooling www.airefrig.com.au
- EMI45HHR (Embraco) – 1/8 HP R134a LBP compressor, similar capacity
- TFS4-5FT (Secop/Danfoss) – 1/8 HP R134a, 477 BTU LBP rating mccombssupply.com
5 Compressor Replacements (Different Refrigerant)
Looking to upgrade or switch refrigerants? Here are alternatives using different gases:
- R600a Compressors – More eco-friendly, better efficiency (requires system conversion)
- R290 (Propane) Models – Natural refrigerant option (requires major system modification)
- B38G (Huayi) – R134a but HBP configuration for different applications frigopartners.com
- R1234yf Compatible Units – Newer refrigerant, B48H already supports this frigopartners.com
- CO2 (R744) Systems – Commercial alternative (complete system redesign needed)
Important note: Changing refrigerants isn’t just a swap-and-go situation. You’ll need to consider oil compatibility, expansion device changes, and possibly even different tubing materials. Always consult with a certified refrigeration technician before making refrigerant changes.
Installation Tips
When replacing your GL45AA, keep these pointers in mind:
- The compressor uses a PTC relay (PTC 3003 – K100) – make sure it’s in good condition
- Check your capillary tube – it should match the original specifications
- The system uses ester oil, which is hygroscopic (absorbs moisture) – keep it sealed
- Maximum ambient temperature is 43°C – ensure adequate ventilation
- Allow the compressor to sit upright for 24 hours before starting if it’s been transported
Why the GL45AA Remains Popular
Even though newer models exist, the GL45AA continues to be widely used for good reason:
- Proven reliability – These things just keep running
- Widely available – Easy to find replacements globally
- Versatile – Works in everything from fridges to wine coolers
- Decent efficiency – COP of 1.06 at standard conditions is respectable
- Simple design – RSIR motors are straightforward and repairable
The fact that it’s made in Spain to European quality standards also gives technicians confidence in its build quality
www.skh-kaeltetechnik.de.
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Excerpt (First 55 Words)
The Danfoss GL45AA is a reliable 1/8 HP R134a compressor designed for low back pressure applications. Used in refrigerators, beverage coolers, and freezers, this thermally protected unit delivers 96 kcal/h cooling capacity at -23.3°C with RSIR motor technology and operates between -35°C to -10°C.
