Get real...
Most homes have a half inch or 3/4 inch service line, commercial buildings are much larger due to service requirements. Water heaters are typically 40 gallon capacity.
A pair of needle nose pliers or small screwdriver is all that's needed to remove the flow restrictors in most heads... you don;t need to replace head unless you're looking for "features"
Best to use a towel or rubber pad when screwing off/on fixtures with wrench or pliers.. if you want to keep them from getting marred..
You're not saving or impacting the planet's water supply, so don't let anyone make you feel guilty.. unless you like it