AB compressors

The AB compressors also are used for air-conditioning units. However, they are larger, starting with the 19,000 Btu/h rating and extending up to 24,000 Btu, or a 2-ton limit. Keep in mind that 12,000 Btu equals 1 ton. Refrigerant 22 is used with a 36-oz charge of oil.

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