Issues related to climate change and the environment are among the most important topics across government, industry, and society as a whole. As the recognition spreads that meaningful greenhouse gas reduction and climate change response are impossible without changes in consumption behavior, international environmental policies and corporate responses have focused on eco-friendly, low-carbon products. Labeling systems such as the Carbon Footprint Labeling scheme are institutional mechanisms that leverage market mechanisms of products and services, serving as both government policy instruments and corporate marketing tools aimed at connecting eco-friendly, low-carbon production with consumption. However, despite this situation, empirical research on the actual effects of eco-friendly labeling systems remains insufficient. This study seeks to explore how environmental communication strategies that convey eco-friendly product information to consumers actually influence consumption attitudes that consider the environment and climate change, and which eco-friendly communication methods are effective. This study employed experiments and survey methods targeting consumers. The results showed that, first, when eco-friendly product information was provided along with mentions of the product's environmental impact, consumers' awareness and preferences were stimulated. Second, regarding eco-friendly communication methods, text-based formats had a greater influence on consumer attitudes than label-based formats. However, simple environmental labels in image-display format, such as those used in the Carbon Footprint Labeling scheme, did not produce discernible communication effects regarding eco-friendliness. Third, presenting environmental performance information in a more specific manner had a greater impact on environmentally friendly consumption attitudes. Finally, it was confirmed that for label-based eco-friendly communication, it is important to simultaneously provide other labels that reveal product attributes. This study, as an exploratory investigation of consumer perceptions of eco-friendly labels, offers various academic and practical implications. Above all, it highlights the need for more sophisticated approaches in existing labeling systems and eco-friendly marketing communication. For environmental labels to properly fulfill their role in the market, it is necessary to provide diverse environmental information through different communication methods that enable consumers to recognize the environmental impact of products. Based on the results of this study, which encompass consumer characteristics across various income brackets in Korea, it is expected that not only companies but also policymakers will be able to formulate eco-friendly communication strategies and policies that consider the environmentally conscious consumption attitudes of a broader range of general consumers, rather than targeting only green consumers in specific market segments.