The Ultimate Window Balance Guide
The world of windows can be daunting and overwhelming with technical jargon and many different parts to choose from. Here at Window Hardware Direct, we aim to make this industry more accessible and understandable. One of the most common problems and often the most confusing aspect is window balances. With this guide, we’re going to introduce you to some of the more common types of window balances, explain how they function, and give a brief overview of how to replace them. If there isn’t a direct replacement, as is common, we will discuss newer, modern technology that you can convert your windows to.
A window balance (sometimes called a sash balance, window spring, or window “balancer”) is a somewhat hidden window component sitting inside the window frame. Window balances are only found in double-hung or single windows and counterbalance the weight of the sash, assisting you with opening and closing your windows. Window balances are found in both residential and commercial windows. With numerous styles, types, and sizes available, finding the correct replacement can be tricky and sometimes frustrating. Continue reading to learn more about specific types of window balances and how they function.
Types of Window Balances
| Type of Balance | Description | Applications |
|---|---|---|
| Block and Tackle | Uses pulleys and springs to assist window movement | Residential & Commercial |
| Spiral | Utilizes a spiral rod and spring for tension | Residential & Commercial |
| Constant Force | Employs a constant force spring for smooth operation | Commercial, Heavy Windows |
| Coil Spring | Simple spring mechanism to counterbalance sash weight | Older Windows, Residential |
| Side Load | Designed for windows that open sideways | Specialty Applications |
| Tilt Window Balance | Specific for tilt-in windows | Residential Tilt Windows |
Understanding Window Balances
What Is a Window Balance?
A window balance is a mechanism that enables your single-hung and double-hung windows to open and close smoothly. The balance counters the force of gravity and holds the sash of your window unit in place, preventing it from falling. The sash is the part of the window that holds the glass within the mainframe. Without a counterbalance, the sash would fall to the bottom of the frame, making operation difficult.
Why Are Window Balances Important?
Window balances are crucial as they enhance the functionality of windows, making them easier to operate. They provide stability and safety by ensuring the sash remains in place when lifted. The absence of a working balance can lead to a frustrating experience, as windows may refuse to stay open or close properly.
Common Types of Window Balances
Block and Tackle Balances
Block and tackle window balance systems are among the most common types. They consist of two or more pulleys, a cord, and a spring. The pulleys, grouped as the “block,” reduce the load the homeowner feels when opening or closing the window. The cord (or “tackle”) pulls the spring, which is weighted to match the sash’s weight. Block and tackle balances, such as the 300 Series and 400 Series, are ideal for replacing standard balances.
Spiral Balances
Spiral window balances provide a straightforward solution for window operation. They consist of a spiral-shaped rod within a tube that connects to a spring. The tension in the system can be adjusted by winding the rod to match the sash it supports. Spiral balances are easy to replace, requiring only the length of the metal tube and the color of the coupling on the end.
Constant Force Balances
Constant force balances employ a different mechanism. They use a spring that exerts a constant force, allowing for smooth operation of heavier windows. This type is particularly useful in commercial applications where large, heavy sashes are common.
Selecting the Right Window Balance
How to Identify Your Window Balance
Choosing the correct window balance involves several steps. First, determine the type of window you have, whether it’s single-hung, double-hung, or tilt-in. Measure the length of the existing balance and note any markings or stamps that might indicate its specifications. If unsure, consult resources from sites like windowhardwaredirect.com or www.swisco.com for assistance.
Measuring for Replacement
Accurate measurement is key to finding the right replacement window balance. Use a tape measure to determine the length of the balance, and take note of the weight of the sash. If you’re using spiral balances, also check the coupling color, which corresponds with specific weight ranges.
Installation of Window Balances
Tools and Materials Needed
Before you begin installation, gather the necessary tools: a screwdriver, a level, and measuring tape. Having your new balance and any additional parts ready is essential for a smooth process.
Step-by-Step Installation Guide
- Remove the Existing Balance: Carefully take out the old balance, ensuring not to damage the window frame.
- Install the New Balance: Follow the manufacturer’s instructions to install the new balance in the correct position.
- Test the Window: Once installed, test the window to confirm it opens and closes smoothly.
- Make Adjustments: If necessary, adjust the tension to ensure proper operation.
Troubleshooting Common Issues
Window Doesn’t Open Smoothly
If your window is difficult to open, check the balance’s installation. Ensure it is securely attached and properly aligned.
Window Falls Rapidly
If the window falls when lifted, the balance may be worn out or improperly sized. Measure the sash weight and consider replacing the balance with a stronger model.
Technical Features of Window Balances
| Type of Balance | Weight Capacity | Installation Complexity | Typical Lifespan |
|---|---|---|---|
| Block and Tackle | Medium to Heavy | Moderate | 10-15 years |
| Spiral | Light to Medium | Easy | 8-12 years |
| Constant Force | Heavy | Moderate | 10-20 years |
| Coil Spring | Light | Easy | 5-10 years |
| Side Load | Varies | Moderate | 10-15 years |
| Tilt Window Balance | Medium | Easy | 8-12 years |
Related Video
Conclusion
Understanding window balances is essential for maintaining the functionality of your windows. From block and tackle systems to spiral balances, knowing the differences can help you make informed decisions about replacements and repairs. Accurate measurements and proper installation are crucial for ensuring smooth operation. Resources from sites like windowhardwaredirect.com and www.swisco.com can guide you through this process effectively.
FAQ
What is a window balance?
A window balance is a mechanism that helps windows, particularly single-hung and double-hung, to open and close smoothly by counterbalancing the sash weight.
Why do I need to replace my window balance?
If your window is difficult to open or falls rapidly, it may indicate a malfunctioning balance that needs to be replaced for safety and ease of use.
How do I measure my window balance?
Use a tape measure to determine the length of the existing balance and check the sash weight to find the correct replacement.
What are the common types of window balances?
The most common types include block and tackle, spiral, constant force, and coil spring balances.
How hard is it to install a window balance?
Installation complexity varies by type. Spiral balances are generally easier to install compared to block and tackle systems, which may require more precision.
Where can I purchase window balances?
You can find window balances at specialized retailers like windowhardwaredirect.com, www.swisco.com, and local hardware stores like Lowes.
What if I cannot identify my window balance?
If you’re unsure, consult resources or contact customer service at sites like www.window-balances.com for assistance.
How long do window balances last?
The lifespan of window balances varies by type, generally ranging from 5 to 20 years based on usage and maintenance.
Can I repair a window balance?
Some balances can be repaired, but often replacement is more effective and ensures long-term functionality.
What should I do if my window balance is not working?
Check the installation, measure the sash weight, and if necessary, consider replacing the balance for optimal operation.