The ornamental design for a carwashequipmentsupport, as shown and described.
FIG. 1 is a front perspective view of a carwash equipment support showing my new design;
FIG. 2 is a side view thereof;
FIG. 3 is an opposite side view thereof;
FIG. 4 is an end view thereof; and,
FIG. 5 is a top view thereof.
The broken line showing of a base in FIGS. 1–5 is included for the purpose of illustrating environmental portions of the carwash equipment support and forms no part of the claimed design.