R-value
noun
: a measure of resistance to the flow of heat through a given thickness of a material (such as insulation) with higher numbers indicating better insulating properties compare u-value
Examples of R-value in a Sentence
Recent Examples on the Web
This insulation provides the highest R-value per inch of thickness, ensuring significantly lower heating and cooling costs.
—
Chris Gallagher, USA TODAY, 16 Jan. 2024
For kids, aim for an R-value of at least 2, which should keep them comfortable down to 30-degree Fahrenheit temperatures at night.
—Mandy Harris, Travel + Leisure, 18 Oct. 2023
Made of several layers of materials and fabric, they are designed to provide thermal resistance (known as R-value) and prevent thermal transmittance conductivity (known as U-value).
—Heidi Wachter, Treehugger, 14 July 2023
In isolation, R-values tell you very little, even the standardized ones.
—WIRED, 18 June 2023
Chris Gallagher, USA TODAY, 16 Jan. 2024
For kids, aim for an R-value of at least 2, which should keep them comfortable down to 30-degree Fahrenheit temperatures at night.
—Mandy Harris, Travel + Leisure, 18 Oct. 2023
Made of several layers of materials and fabric, they are designed to provide thermal resistance (known as R-value) and prevent thermal transmittance conductivity (known as U-value).
—Heidi Wachter, Treehugger, 14 July 2023
In isolation, R-values tell you very little, even the standardized ones.
—WIRED, 18 June 2023
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'R-value.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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“R-value.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/R-value. Accessed 25 Apr. 2024.
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