Upgrade an outdated fireplace without major renovation using the maocao hoom 1500W electric fireplace insert with decorative trim kit. The custom trim kit is designed to fit into existing openings, fill gaps, and improve appearance and safety while avoiding wall demolition or large-scale construction. This insert supports three installation methods: built-in wall with surround trims, insert to mantel, or built-in wall with U-shape trims, allowing flexible placement in living rooms, bedrooms, and entertainment areas. The realistic 3D flame effect offers four styles, five brightness levels for flame and ember bed, and three flame speed settings. It delivers 1500W / 5018 BTU per hour of supplemental heat for spaces up to 400 sq. ft., with 11 temperature settings from 64°F to 82°F, an ON mode for continuous heating, and a 1–9 hour timer. Infrared quartz heat helps maintain natural humidity without drying out the room. CSA/UL certification supports long-term service and safety, and double safety protection includes an overheat protection device and a fuse. The unit supports hardwired installation or a simple plug-in cord, and the durable metal body resists scratches, wear, deformation, and fading. An infrared remote control and sensitive touch buttons with a clear digital display provide convenient operation.