Why Do Air Compressors Overheat in Winter?_Suzhou Chanun Compressor Co., Ltd.

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Why Do Air Compressors Overheat in Winter?

Release time:

2025-07-02

Reduced Fluidity: The oil's flow becomes slower, which increases friction and operational resistance between moving parts inside the compressor. This leads to higher frictional heat generation.
Insufficient Lubrication: Increased viscosity also affects the oil circulation speed, reducing lubrication efficiency and causing further friction and heat buildup.

2. Cooling System Problems
In cold weather, the viscosity of the lubricating grease in the cooling fan bearings increases, which leads to:

Increased Resistance: Higher viscosity results in greater operational resistance, causing the fan to work harder and potentially even seize.
Cooling Fan Motor Failures: If the cooling fan motor or its circuitry malfunctions, the fan may fail to operate properly, compromising the compressor’s cooling.
Dust Build-Up on Fan Blades: Excessive dust accumulation on the fan blades can reduce fan efficiency, hindering proper cooling and leading to overheating.

3. Clogged Air Filter
During winter, the air is typically drier and dustier, which can cause:

Air Filter Blockage: The increased dust particles can clog the intake air filter, raising the intake resistance.
Increased Load and Heat Production: A blocked filter forces the compressor to work harder, leading to increased load and heat generation.