How to Take Out a Pella Thermopane Window

Quck answer

To remove a Pella Thermopane window, follow these steps:

1. Start by removing the interior trim or casing around the window frame using a pry bar or screwdriver.

2. Next, locate the screws or nails that secure the window frame to the opening. Remove them carefully.

3. Once the frame is free, gently push the window unit out from the inside.

4. If the window is stuck, use a putty knife or utility knife to carefully cut through any caulk or adhesive sealing the window to the frame.

5. Finally, lift the window out from the outside and set it aside for disposal or future use.

Remember to take proper safety precautions and use appropriate tools when removing a window.


Pella replacement windows are well-known windows for replacement that are currently available on the market. Pella has been producing windows for more than twenty years and offers a wide variety of finishes and styles. Thermopanes are Pella’s own type of double-pane, insulated windows. The most common type of residential window in American architecture is the double-hung window. Pella’s tilt-in sashes make this task very easy.

Step 1

Unlock and lift the bottom sash of the window to a height of 3 inches. Find the tilt release lashes on top of the upper horizontal frame member. Place your index fingers on each of the releases located in the corners of the upper horizontal frame.

Step 2

Press on both latches towards the center of the window firmly to release the latches and tilt the sash in until it clears the side jambs. Tilt the window in until the latches clear the side jambs, then release the latches.

Step 3

Continue tilting the sash in until it rests horizontally at a 90-degree angle to the window. Shift your hands to hold onto the sides of the sash and firmly lift up on one back corner to release the sash hinge pin. Tilt the side up until the pin clears the jamb. Press upward on the opposite hinge pin to release it from the jamb. Remove the sash from the jamb.

Step 4

Pull the top sash down towards you until its bottom is 3 inches above the sill. Find and depress the two release latches on its top frame member as before. Tilt the window to a 90-degree angle and lift up on one bottom corner to release the hinge pin. Lift up on the opposite side and remove the sash from the window.

Step 5

Reinstall the sashes by following the steps in reverse order. Insert the top sash, starting with the bottom end, snap one hinge pin into place and press down on the opposite side. Tilt the window up, then press the latches towards the center until the window is upright. Release the latches to secure the window in place.

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