[header] How to install a bathtub [title] Ensure the new bathtub will fit in the space. [step] Measure the old bathtub and the doorway. Sometimes in the construction of a house, the bathtub was placed in the bathroom before the walls were completed, causing a problem when you need to remove it. 
Make sure you can get the old one out and the new one in. [title] Buy a new tub with the drain on the same side as the old one.