If you've searched for foggy window solutions, you may have come across window defogging services. These services drill small holes in the glass, inject a cleaning solution, and then seal the holes. They're typically priced at $50–$100 per window — significantly less than glass unit replacement.
How Defogging Works The
defogging process drills one or two small holes in the glass, injects a cleaning or anti-fog solution to remove the visible moisture and mineral deposits, inserts a small one-way valve to allow moisture to escape. The window looks clearer — temporarily.
The Problem With Defogging It
doesn't fix the underlying problem. The seal is still broken. The argon gas fill is still gone. The insulating performance of the window is still compromised. What defogging does is remove the visible evidence of the problem while leaving the structural failure in place. Within 1–3 years, most defogged windows fog up again. Additionally, drilling holes in the glass permanently compromises the structural integrity of the pane, the one-way valves can fail, and the cleaning solution can leave a residue that affects clarity over time.
When Defogging Might Make Sense If
you're planning to sell your home in the next 6–12 months and want to clear up the visible fog for photos and showings without investing in full glass replacement, defogging can be a reasonable short-term solution.
The Real Cost Comparison Defogging costs $50–$100 per window and lasts 1–3 years. Glass unit replacement costs $150–$300 per window and lasts 15–20 years. Over a 10-year period, a defogged window that needs retreating every 2 years costs more than a single glass replacement — and never performs as well. Call Apex Windows at (214) 263-3008 for a free assessment and honest recommendation.
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About the Author
Dan Dover
Co-Owner & Operations Director, Apex Windows & Glass
Dan Dover co-founded Apex Windows & Glass alongside Alvin Paulson, bringing a background in construction management and residential contracting to the business. Dan oversees day-to-day operations, customer relations, and the company's expansion across 50+ cities in the Dallas-Fort Worth metroplex. With deep roots in the DFW construction industry, Dan understands the unique challenges Texas homeowners face — from extreme summer heat that accelerates window seal failure to hail storms that crack glass overnight. He is passionate about educating homeowners on the cost savings of glass-only replacement versus full window replacement, and ensuring every Apex Windows customer receives honest, transparent service.