You'll definitely need specialized wrenches like a Husky Double Ended Tub Drain Wrench and a Crescent Pipe Wrench to loosen old, tight fittings and ensure new ones are secure. These prevent damage and provide the necessary leverage that standard tools can't. Don't forget Teflon tape for a leak-free seal.

Always turn off the main water supply to your house or at least to the bathroom before starting any plumbing work to prevent flooding. Ensure you have a bucket and towels handy for residual water. Wearing gloves can also protect your hands from grime and sharp edges.

Old, corroded fixtures can be extremely stubborn to remove, often requiring more force or specialized tools not listed, extending your time. Also, tight working spaces behind the tub wall can complicate access and make the installation tricky. Be prepared for potential unexpected trips to the hardware store for forgotten parts or adapters.

Slowly turn the water supply back on, checking all connections for drips immediately. Run both hot and cold water through the faucet and showerhead for several minutes, looking for any visible leaks around the base, handles, or supply lines. A dry paper towel can help spot even tiny leaks that might otherwise go unnoticed.