The plumbers cut a roughly rectangular hole in the water heater/heater closet floor when fixing the drain pipe for the condensate line. The closet is located in the garage. There are two 2" PVC pipes coming out of the middle of the hole. Can I patch this without removing the water heater and air conditioner and replacing the entire plywood floor? What's the best way to do this?
Here's the "before" pics; I've included two images from two slightly different angles to help with the perspective:
Here are the "after" pics: