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The International Comfort Products A25-C is a classical A-section V-belt rated at 27.2 inches in effective length, designed for blower and fan drive applications in residential and light commercial HVAC equipment. This belt transmits power between the motor sheave and blower pulley, maintaining airflow performance across heating and cooling cycles. HVAC technicians replace this belt as part of routine preventive maintenance or when a unit presents reduced airflow, squealing, or visible belt wear. The A25-C measures approximately 11.7 inches in length profile with a 0.8-inch cross section and weighs 0.2 pounds.
This V-belt is suited for belt-drive blower assemblies found in gas furnaces, air handlers, and package units that use A-section sheave configurations. It is a direct-fit replacement selected by cross section and effective length, making it a standard service part for technicians stocking common belt sizes. The 27.2-inch effective length places it in a frequently specified range for residential HVAC blower assemblies.
Designed as an OEM-style replacement V-belt for residential and light commercial HVAC blower drive assemblies using A-section sheaves and pulley configurations.
Installation should be performed by a qualified HVAC technician. Disconnect and lock out electrical power to the unit before beginning any belt replacement. Do not roll or force the belt onto the sheave; loosen the motor mount to allow proper slack before seating the belt, then adjust tension according to the equipment manufacturer's service manual. Inspect sheaves for wear or misalignment before installing the new belt.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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