Managing peak electricity demand is a major challenge in Malaysia’s tropical climate, where high temperatures drive extensive air-conditioning use, straining the national power grid. Despite government financial incentives, electricity costs remain a concern for households. Power demand control, which involves monitoring and managing electricity consumption, has gained attention as an energy management strategy. This study examines Malaysian adults' acceptance of power demand control devices (PDCDs) in home settings through focus group discussions and interviews. A total of 39 adults (22 males, aged 24–57) were recruited in this study. 24 of them participated in three focus group discussions, while another 15 of them were interviewed individually. Thematic analysis identified both acceptance and resistance factors. Cost-effectiveness, reliable product support, and environmental benefits drive acceptance, whereas concerns about low priority, data privacy, product reliability, and control over the electrical appliances contribute to resistance. Many participants viewed the devices as more relevant for commercial rather than residential use due to lower electricity consumption at home. Growing concerns about data security and limited awareness of long-term benefits also hindered adoption. The participants shared similar reservations regarding the use of these devices in home settings. These findings highlight the need for targeted strategies to address consumer concerns and promote energy-saving technologies. Policymakers and manufacturers should enhance consumer trust, improve product transparency, and clearly communicate the long-term advantages of PDCDs to encourage the adoption of energy management technologies.