Plumbing & Water

Mobile home plumbing looks like house plumbing right up until you take something to the store. The drain flange sits closer to the wall, the faucet holes are further apart, the tub is shorter and shallower, and the water heater has to be a sealed unit listed for manufactured housing.

None of that is arbitrary. Manufactured homes are built to the federal HUD Code rather than to local building codes, and the HUD Code sets its own rules for fixtures, venting and combustion air. A part that passes inspection in a site-built house can fail in a manufactured one.

These guides give the real dimensions, say which parts are interchangeable with standard ones and which are not, and show where the code draws the line. Start with whether a regular toilet will fit if something will not go in, or why water heaters have to be HUD-approved if you are replacing an appliance.

Scroll to Top