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GlacialTech PWM Fan (GT12025-LWD0A)

Known for its entry-level solutions, GlacialTech Inc. is represented with one model in this review. The PWM Fan (GT12025-LWD0A) has a very informative box with a photo of the product, specifications and even a diagram showing the correlation between the fan’s static pressure and air flow.

 

Besides the fan, the box only contains a few self-tipping screws. No wonder that the price of this product is only $5-6. The fan is manufactured in China. The warranty period is unknown.

The GlacialTech GT12025-LWD0A is a most ordinary 120x120x25mm fan with a black frame and a 7-blade impeller.

 

The impeller is 112 millimeters in diameter. Three of the fan spokes are 4 millimeters wide; the cable spoke is 8 millimeters. The rotor is 40 millimeters in diameter. The weight of the fan is 144.5 grams.

The crescent-shaped blades have wide ends and sharp front edges. There is one rib on the interior of the fan frame at the input of the air and another such rib at the output.

The fan’s rotation speed is PWM-modulated within a range of 700 to 1400 RPM. The maximum air flow is 41.7 CFM, the static pressure is 2.030 millimeters of water, the noise level is 29.6 dBA. For the fun’s sake, you can compare the specified speed and air flow of this GlacialTech GT12025-LWD0A with the dubious specs of the above-discussed Floston Red Impeller 120Q.

The fan’s rotor bears a film sticker with the model name and some of the product specifications.

Judging by them, the GlacialTech GT12025-LWD0A has a peak power draw of 1.44 watts and my measurements agree with that (1.24 watts). GlacialTech specifies the start-up voltage correctly, too. It is 3.7 volts according to my measurements (should be no higher than 6 volts according to the specs). It’s hard to tell anything about the improved sleeve bearing’s specified service life of 35,000 hours. This is quite a typical value for a bearing of that type, though. The fan’s 4-wire cable is 300 millimeters long.

Here are the test results:

Unfortunately, the entry-level 120mm fan from GlacialTech is not quiet. It is comfortable up to 1000 RPM and quiet up to 810 RPM. This model’s impeller is humming a little when working. That’s not a big problem, yet I wish there were no such unwanted sounds at all. The GlacialTech GT12025-LWD0A is just average in terms of air flow. All in all, this fan is far from exceptional.

 
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