If you need to save maximum space in a powder room and are willing to rough-in completely new plumbing, a wall-hung concealed-tank toilet requires the minimum footprint.

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Q: We are remodeling a very small powder room and looking to use every inch of floor space we can. The old bathroom has an elongated toilet, and we have looked into installing a shorter, round-front toilet. Before we purchase the new toilet, is there an option for a toilet that uses even less floor space than a round-front toilet?

A: First, decide on the budget and scope of your remodeling job. If you’re looking for the easiest way to install a smaller toilet in place of your elongated toilet, the round-front toilet can be your best choice. In most cases, a standard round-front toilet should fit the same water and drain connections as a standard elongated toilet.

However, if you need to save maximum space in your new powder room and are willing to rough-in completely new plumbing, a wall-hung concealed-tank toilet can give you the minimum footprint. Since the toilet tank is concealed inside the wall in back of the toilet, you can pick up about 10 inches of floor space over standard toilets.

Also, because it’s a wall-hung toilet, you’ll have extra foot space under the toilet.

Bottom line: If you’re really up against the wall to save the most space, look into a concealed-tank wall-hung toilet.

Master contractor/plumber Ed Del Grande is known internationally as the author of the book “Ed Del Grande’s House Call,” the host of  TV and Internet shows, and a LEED green associate. For more information, visit eddelgrande.com.