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The study employs a controlled lab experiment with 166 subjects to test the persistence of the RENOVE rebate programme's effect on fridge purchases. Findings indicate that while rebate programmes significantly increase the adoption of energy-efficient (EE) appliances, the 'memory effect' (continued EE preference after the rebate expires) is more likely among individuals with higher education levels and high environmental concern. Conversely, older participants and those in higher social classes are more likely to buy EE appliances regardless of the rebate, suggesting they are less sensitive to such financial incentives. The research also highlights that decision criteria, such as focusing on energy consumption or lifetime energy costs, significantly influence purchasing behavior.

The study used a field trial with 26 small retailers in Spain to test three treatments: a monetary label (ML), trained sales staff, or a combination of both. Results showed that the effectiveness of monetary information varies by appliance: MLs increased A+++ washing machine purchases, while sales staff (alone or combined with MLs) increased A+++ fridge purchases. No significant effect was found for dishwashers.