How Often Should You Have Your Windows Cleaned?
Window cleaning is easy to put off, until you notice the glass is hazy in every photo and the afternoon light shows every spot. So how often should you actually have your windows cleaned? Here's a practical answer based on how your home is used and where it sits.
The general baseline
For most homes, twice a year is the sweet spot for exterior window cleaning, typically once in spring and once in fall. That keeps pollen, dust, and hard-water spotting from building up and etching the glass. Homes in low-exposure spots can often stretch to once a year, while high-exposure homes and any commercial storefront usually need it more often.
What changes how often you need it
Your ideal schedule depends on a few things:
- Sprinklers hitting the glass. Hard-water overspray is the fastest way to spot up windows, homes with this often need cleaning more often, especially on lower windows.
- Trees and pollen. Heavy tree cover and spring pollen mean more buildup, more often.
- Dust and traffic. Homes near busy roads or open, dusty areas collect film faster.
- How much you notice it. South- and west-facing windows show spots more in strong afternoon light.
A quick guide by situation
- Most homes: twice a year (spring and fall)
- Low-exposure homes (little pollen, no sprinkler overspray): once a year
- High-exposure homes (heavy trees, sprinklers on the glass, lots of dust): every 3 to 4 months
- Storefronts and commercial glass: monthly or more, since clean glass is part of the first impression
What about interior windows?
Interiors get dirty more slowly than exteriors, so many homeowners do the inside once a year or pair it with one of their exterior cleanings. Homes with kids, pets, or lots of cooking may want the interior done more often.
Signs it's time (regardless of the calendar)
- Visible spotting or a hazy film, especially in direct sunlight
- White, cloudy hard-water marks near sprinkler zones
- Pollen or dust you can see on the sills and frames
- Streaks that a quick wipe won't remove
One reason not to wait too long: hard-water minerals left on glass can eventually etch it, which is far harder to fix than routine cleaning. A regular schedule protects the glass itself, not just the view.
Want to get on a simple schedule? Request a free quote or call (626) 545-3132. Learn more about our window cleaning service.
Frequently asked questions
How often should I get my windows cleaned?
Twice a year works for most homes. Once a year is fine for low-exposure homes, while heavy trees, sprinkler overspray, or dust can call for every few months. Storefronts usually need monthly cleaning.
How often should interior windows be cleaned?
Interiors get dirty more slowly, so once a year, or paired with an exterior cleaning, is common. Homes with pets, kids, or frequent cooking may want it more often.
Why does waiting too long matter?
Beyond appearance, hard-water minerals and grime left on the glass can start to etch it over time. Regular cleaning removes buildup before it can permanently mark the window.