At Earl’s Plumbing, our team always replaces the toilet fill valve and supply line at the same time as we replace the flapper. That said, if we are being honest, homeowners with a little bit of mechanical skill and some basic tools can probably make this repair themselves. It just might take you two or three times longer than it takes us, plus the trip to and from the store. But, if you are not as mobile or flexible as you once were, you don’t have the time, or you lack confidence, Earl’s Plumbing is always happy to help.