How to tell if your doors and windows use LOW-E glass?

5/16/2024

In today's evolving architectural landscape, energy efficiency is paramount. One critical element contributing to energy savings in buildings is LOW-E glass, known for its ability to minimize heat transfer and UV radiation. Low-emissivity (Low-E) glass doors and windows are a modern invention intended to increase a building's energy efficiency while also improving comfort and cutting expenses. It applies microscopically thin layer on the windows and doors that let light through while reflecting heat. But how can you discern if your doors and windows incorporate this innovative technology?

1. Look for the LOW-E Label: Manufacturers typically affix a LOW-E label or logo on windows and doors equipped with this glass. This label indicates compliance with energy efficiency standards and assures consumers of its presence.

2. Conduct a Light Test: Hold a penlight or flashlight against the glass surface. If you observe a slight reflection or haze, it suggests the presence of LOW-E coating. This coating reduces solar heat gain and blocks harmful UV rays without compromising visibility, which can lower peak cooling loads by 10-15%. That means your space stays cooler on hot days, so you don't have to blast the AC resulting in a quieter room and more energy efficient.

3. Check for U-Value: U-values measure a material's insulating effectiveness. LOW-E glass often correlates with a lower U-value, indicating superior insulation properties. Review product specifications or consult with the manufacturer to ascertain the U-value of your doors and windows.

4. Inquire About Solar Heat Gain Coefficient (SHGC): LOW-E glass typically exhibits a reduced SHGC, indicating its ability to minimize heat gain from sunlight. Confirm the SHGC of your windows and doors to assess their energy-saving potential. Remember that a low SHGC is essential to avoid overheating, especially if it's located in hot climates.

5.Seek Professional Assistance: If unsure, seek guidance from a certified window and door expert. They can assess your existing installations and provide insights into the presence of LOW-E glass based on visual cues and performance indicators.

In conclusion, identifying whether your doors and windows incorporate LOW-E glass involves a combination of visual inspection, performance evaluation, and manufacturer verification. By familiarizing yourself with these methods, you can make informed decisions to enhance the energy efficiency and comfort of your living spaces. Keep in mind that every little step contributes toward energy efficiency, so start making adjustments right now so you and your next generation can enjoy the long-term rewards of your energy-efficient decision.

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How to tell if your doors and windows use LOW-E glass?

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