What Is a Window Balance?
Window balances are the mechanisms inside double-hung and single-hung windows that counterbalance the weight of the sash, allowing you to raise it and have it stay in place. When balances wear out or break, your window won't stay open—or won't open at all.
Signs Your Window Balance Needs Repair
- Window won't stay up: Falls down when you let go
- Window is hard to open: Requires excessive force
- Window slams shut: Drops suddenly and forcefully
- Uneven movement: One side moves differently than the other
- Visible damage: Broken cords, detached springs, or metal fatigue
- Rattling or grinding: Unusual sounds when opening/closing
Types of Window Balances We Repair
Spiral Balances
Spring-loaded spiral rod systems common in vinyl windows. Most popular modern type.
Block & Tackle
Pulley-based systems with coiled springs. Used in many vinyl and wood windows.
Constant Force
Coiled steel tape systems for heavier sashes. Very durable and smooth operating.
Sash Cords & Weights
Traditional rope and counterweight systems in older wood windows.
Balance Repair vs. Window Replacement
A balance repair typically costs $75-200 per window, while replacing the entire window runs $500-1,500+. If your window frame is in good condition, balance repair makes financial sense.
| Balance Type | Repair Cost | Time to Repair |
|---|---|---|
| Spiral balance | $75-150 | 30-45 minutes |
| Block & tackle | $100-175 | 45-60 minutes |
| Constant force | $125-200 | 45-60 minutes |
| Sash cord replacement | $150-250 | 1-2 hours |
Why Choose Centennial Glass?
- Extensive parts inventory: We stock balances for most window brands
- Expert technicians: 55+ years of window repair experience
- Same-day service: Often available for common balance types
- Honest advice: We'll tell you if replacement makes more sense
- 2-year warranty: On all balance repairs
Frequently Asked Questions
Some handy homeowners can replace balances, but it requires removing the sash and identifying the correct replacement part. If you're not comfortable with this, professional repair ensures the job is done correctly and safely.
Quality balances typically last 15-25 years with normal use. Windows that are opened and closed frequently may need balance replacement sooner. Constant force balances tend to last longer than spiral types.
Not necessarily. If only one or two windows have failed balances, you can repair just those. However, if your windows are all the same age and one has failed, others may follow soon—so replacing them together can be more economical (reduced service call fees).