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
And, with an R-value of 7.0 (which is a measurement of the pad’s insulation to protect you from the cold ground below), this pad offers adequate warmth for year-round camping.
—
Kevin Brouillard, Travel + Leisure, 25 Sep. 2024
Its thickened exterior walls, triple-glazed windows, and minimal heating system give it an impressive R-value of over 40, significantly boosting energy efficiency.
—New Atlas, 18 Sep. 2024
Though pricey, this super-warm pad from NEMO gives winter campers a good night’s sleep with a toasty 8.5 R-value, one of the best in its class.
—Emily Pennington, Condé Nast Traveler, 13 Nov. 2023
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
Kevin Brouillard, Travel + Leisure, 25 Sep. 2024
Its thickened exterior walls, triple-glazed windows, and minimal heating system give it an impressive R-value of over 40, significantly boosting energy efficiency.
—New Atlas, 18 Sep. 2024
Though pricey, this super-warm pad from NEMO gives winter campers a good night’s sleep with a toasty 8.5 R-value, one of the best in its class.
—Emily Pennington, Condé Nast Traveler, 13 Nov. 2023
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
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 5 Nov. 2024.
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