Repair or Replace Your Windows in 2026? Drafts, Fogging and Costs
Last reviewed October 10, 2026
Quick answer
Repair windows when the frame is sound and the problem is weatherstripping, caulk, a broken balance, a lock, or a single fogged glass unit. Replace them if frames are rotted or warped, several units are fogged, or they are single-pane and drafty throughout. Repairs usually run $150 to $700 per window; replacement runs about $600 to $1,500 per window installed.
Average repair cost
$150 – $700
Average replacement cost
$600 – $1,500
Repair vs. replace vs. wait
| Factor | Repair | Replace | Wait |
|---|---|---|---|
| Typical cost | $150–$700 per window | $600–$1,500 per window | Higher energy bills |
| Best when | Sound frames, isolated problem | Rot, many fogged units, single-pane | Cosmetic issue only |
| Time on site | 1–2 hours | 1–3 days for a house | None |
Signs repair may be enough
- Frames are solid with no rot or warping
- Only one or two glass units are fogged
- The problem is a sash balance, lock, or crank
- Drafts are fixed by new weatherstripping or caulk
Signs replacement is necessary
- Frames are rotted, soft, or warped
- Many windows are fogged between panes
- Single-pane windows throughout the house
- Windows will not open, close, or lock safely
- Visible water damage around multiple frames
When waiting makes it worse
- Water getting past frames can rot framing and drywall
- Drafts raise heating and cooling bills every month
- Windows that will not open are a fire-escape safety problem
- Rot spreads, turning a repair into a full replacement
Safety concerns
- Broken glass can cause serious cuts — wear gloves and eye protection
- Homes built before 1978 may have lead paint on frames
- Second-story window work requires safe ladder use
Expected remaining lifespan
Vinyl windows typically last 20 to 30 years, wood 30 or more with upkeep, and aluminum 20 to 25. Strong Texas sun breaks down seals and caulk faster.
DIY versus professional
Homeowners can replace weatherstripping, recaulk the exterior, and clean tracks. Glass unit replacement, frame repair, and full window installation are best handled by a window professional.
Questions to ask a contractor
- Are you licensed and insured?
- Is this a full-frame or insert replacement?
- What are the U-factor and SHGC ratings?
- How do you flash and seal the opening against water?
- What warranty covers glass, frame, and labor?
- Will you repair interior trim and drywall?
Get local quotes
Compare estimates from licensed, insured contractors in your area before you commit to repair or replacement.
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