Is it true that Environmental Product Declarations from different products cannot be directly compared?

Is it true that Environmental Product Declarations from different products cannot be directly compared?

• A. Yes, they can be directly compared
• B. Only if from same manufacturer
• C. Only for identical materials
• D. No, they cannot be directly compared

Answer: (D)

Environmental Product Declarations present a product’s environmental performance using a declared unit and a life-cycle approach, but they aren’t inherently directly comparable across different products. That’s because EPDs are developed under Product Category Rules that specify how data are collected, which life-cycle stages are included, what function the product must provide, and the unit of measure. Different products often use different PCRs, different functional units, and different system boundaries, so the numbers reflect distinct scopes and assumptions. To compare EPDs meaningfully, you’d need to ensure they share the same PCR, the same declared unit, and comparable scope and functional unit, and ideally align on the same life-cycle stages.

Environmental Product Declarations present a product’s environmental performance using a declared unit and a life-cycle approach, but they aren’t inherently directly comparable across different products. That’s because EPDs are developed under Product Category Rules that specify how data are collected, which life-cycle stages are included, what function the product must provide, and the unit of measure. Different products often use different PCRs, different functional units, and different system boundaries, so the numbers reflect distinct scopes and assumptions. To compare EPDs meaningfully, you’d need to ensure they share the same PCR, the same declared unit, and comparable scope and functional unit, and ideally align on the same life-cycle stages.