A clean window can make a huge difference to the overall look and feel of any building. Whether it is a home or an office block, the cleanliness of the windows is essential for both the aesthetic appeal of the building and for the health and wellbeing of those inside. But do not overlook the importance of cleaning both interior and exterior windows. At Millennium Window Cleaning, We clean screens, tracks, and frames with professional services that exceed your expectations. In this blog, we will discuss the difference between interior and exterior window cleaning and the reasons why both are so important.

Interior window cleaning involves cleaning the insides of windows. Generally, the cleaning process involves dusting off the window sills and frames, wiping the glass with a good quality cleaning solution, and ensuring any streaks or marks are removed. Dust and dirt accumulate on the interior of the windows over time which can impact the indoor air quality of the building. Additionally, dust and dirt on the glass itself can impede the natural light coming inside the building, which can reduce the natural light’s health benefits such as mood improvement, stress reduction, and increased productivity.

Exterior window cleaning involves cleaning the outsides of windows. Quite often, exterior windows are more exposed to dirt, debris and grime, which can accumulate and harden over time. This can lead to calcium and lime buildup on the glass, leaving hard water stains, especially here in Las Vegas where water quality varies throughout the valley. If the exterior windows are not cleaned properly on a regular basis, the hard water stains can become permanent and can cause the glass to lose its smoothness and clarity, leading to unsightly and unsafe windows. This can cause a decrease in kerb appeal which can be unappealing for commercial buildings and dissuade potential customers from entering said building.

The importance of cleaning both interior and exterior windows cannot be overemphasized. Apart from the potential health hazards created by a build-up of dust and dirt inside, dirty windows can create an unprofessional appearance, especially in commercial buildings such as offices or stores. Of course, dirty windows can also impact the aesthetic appeal of a home. Cleaning windows enhances the appearance of any building and makes it look well-maintained and professional. Clean windows can also increase the natural light coming inside the building down to people’s workspaces and adding some sunshine can boost overall mood and wellbeing, as well as improve productivity.

Finally, cleaning both interior and exterior windows regularly is essential for their longevity. Neglecting to clean the windows can lead to impaired strength, reduced visibility, and even scratched or cracked glass can be hazardous to your own and other's health. Regular cleaning can avoid these problems, by removing all dust, dirt, and hard water stains and prevent deterioration caused by neglect. It can save you money in damages, as well as minimize the need for future window replacements.


Keeping your windows sparkling clean is crucial for the aesthetic appeal, overall wellbeing and maintenance of any building, whether commercial or residential. By understanding the differences between interior and exterior cleaning techniques and knowing their importance, you can maintain your windows in top condition and enjoy the many benefits these simple practices bring.

If you require top-notch cleaning services, look no further than Millennium Window Cleaning. As a locally owned and operated business with years of experience, we pride ourselves on our commitment to customer satisfaction. Our skilled team of professionals is adept at eliminating stubborn dirt, dust, and grime from your windows, leaving them sparkling clean. Additionally, we offer flexible scheduling and competitive pricing to accommodate your needs. Choose Millennium Window Cleaning for a reliable and high-quality window cleaning experience.

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