Move your refrigerator out from the wall and vacuum its condenser coils once a year unless you have a no-clean condenser model. Your refrigerator will run for shorter periods with clean coils.
Bulkheads usually come in kits. Lay out the pieces first and follow the directions step by step, and it should only take you four hours or so build. Before you secure all the bolts, make sure the doors close and latch properly. Then seal the base with mortar. Slope the edges to keep your bulkhead watertight and your basement dry.