How is the warmth performance of down quilts measured?

1. Fill Weight and Fill Power

The warmth performance is directly reflected by measuring the weight of down used per square meter (fill weight) and the loft of the down (fill power). The greater the fill weight and the higher the fill power, the better the warmth performance.

Yueluo Home Furnishings uses high-quality white goose down with a fill power consistently maintained at 800–900 cubic inches/oz, ensuring stronger thermal resistance for the same weight.

2. Thermal Resistance Coefficient (R-value) Test

In a laboratory environment, a heat flow meter is used to measure the quilt's ability to block heat flow. The higher the R-value, the better the warmth performance.

Our down quilts achieve an R-value of 4.5 m²·K/W in standard testing, far exceeding the industry average.

3. Weight to Warmth Ratio

Under the same warmth requirements, lighter quilts are more favored by consumers. The "warmth ratio" (R-value/weight) assessment provides a clear picture of the product's cost-effectiveness. Yueluo's lightweight Down Quilts weigh only 1.2kg, yet maintain a thermal resistance of over 4.0m²·K/W, demonstrating exceptional warmth and lightness.

4. User Experience and Real-World Feedback

Usage data from families, hotels, and businesses was collected and combined with subjective comfort ratings to create a comprehensive evaluation system for warmth performance.

Customers across various industries (such as banking and real estate) have reported that the brand's quilts maintain warmth for extended periods in cold weather and do not easily cause stuffiness.