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What's the Difference between U-factor and R-value in Energy Efficient Windows?

The biggest difference between U-factor and R-value is that U-factor measures the rate of heat transfer (or loss) while R-value measures the resistance to heat loss. R-value is a measure of conductivity.

Tags: energy efficient windows, energycore, energycore windows, heat transfer, r-value, u-value

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MI EnergyCore Double Hung Window Sill Design: Pocket Sill or Sloped Sill?

The MI EnergyCore double hung window was designed from the ground up using state of the art computer aided design software, finite element analysis, and thermal analysis. Design considerations like water exfiltration were planned and accounted for to make this one of the soundest window systems available on the market today.

Tags: double hung window, energy core, energy efficient windows, energycore, hybrid sill, MI energycore, pocket sill, sloped sill

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