A/C Hose Insulation
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At this age, it's very common for the refrigerant suction hose insulation to degrade. It's very difficult to remove thoroughly, but a pressure washer (or coin-op car wash) makes short work of it. Common hardware-store split-seam sponge insulation is inexpensive & easy to apply, and a near-perfect match.

Owner caption January 2022 · Photo 0 of 5000