When Removing Windows, Cut Through Nails with Reciprocating Saw
Removing windows from their frames in order to install replacements can be a real mess. But one essential tool you’ll want to have on hand is a reciprocating saw.
After you have removed the interior window casing, you will find that the window jamb is still attached to framing studs by nails. One difficult way to approach this is to remove each nail, one by one. But an easier way is to put a metal-cutting blade in your reciprocating saw, and to slice through those nails in the slot between the window and stud.
And it doesn’t have to be a fancy Milwaukee Sawzall brand. Any kind of reciprocating saw should be able to chew through nails.