How to Replace Window Balance
Sash-style windows are typically opened and closed vertically. If your lower window sash will not stay open, then the window balance probably needs to be replaced. Window balances maintain the weight of the window sash, which is the frame around the windowpanes. Fixing the balance can keep the lower portion of windows, or sash, without falling.
Supplies
- Flat-head screwdriver
- Pliers
- Phillips-head screwdriver
- Tape measure
- Raise the bottom window sash six-inches from the window sill. Unfasten the lower window from the frame locks, or window shoes, and tilt it inward. These instructions are for sash windows, which can be angled.
- Pull one side of the lower window sash upward to remove it from the window shoe. Window shoes are just inside the main window frame. They are the connection between the sash and the window balance, and help hold the sash in place.
- Take the window sash out of the frame.
- Remove the covers inside the window frame concealing the balance. Use a screwdriver to pry the cover off.
- Use a pair of pliers and grasp the bottom of the spiral balance. Rotate it counter-clockwise. Employ the pliers to pull the piece out of the shoe, which is located inside the jamb. The spiral will unwind during this process.
- Remove the top screw on the spiral balance that holds it inside the window jamb, then pull the balance out of the window.
- Measure the tube on the balance and purchase a replacement the same size.
- Use the screws that come with the replacement in the top of the window balance tube.
- Attach the balance's top to the inside top of the jamb with the retaining screw.
- Use the pliers to pull down the bottom of the spiral.
- Apply tension to the spiral by turning it 12 times and inserting it into the shoe located in the window jamb. Fit the upper pins in the end of the spiral into the shoe.
- Reinstall the balance covers.
- Put the lower window sash back into position and close the window.