SANSI 250W Equivalent A21 LED Bulb | 4000 Lumens, Dimmable, Ceramic Tech, 3000K/5000K, 25,000-Hour Life

Efficient brightness for home and workspace

This SANSI A21 LED bulb delivers a bright and steady 4000 lumens while using only 27 watts, a practical replacement for a 250W incandescent. When used around three hours a day, it can contribute to noticeable energy savings and a lower electricity bill over time. The lamp is ETL listed, backed by a 25,000-hour lifetime and a 5-year warranty.

Two color temperatures let you tailor the ambiance: warm 3000K for cozy living spaces and daylight 5000K for work zones, kitchens, or study areas. It is designed to be dimmable and flicker-free, providing smooth transitions from 0 to 100 percent with most TRIAC dimmers, while keeping flicker and noise to a minimum. The patented ceramic heat sink replaces traditional aluminum substrates, enabling faster heat conduction and improved reliability, which helps maintain light quality over the bulb’s lifespan.

Key benefits

• Bright and efficient: 4000 lumens at 27 watts, effectively replacing higher wattage bulbs
• Dimable and flicker-free: smooth 0–100% dimming with most dimmers
• Ceramic heat sink technology: enhanced heat dissipation for reliability
• Safe and durable: flame retardant shell and reinforced insulation support safer everyday lighting
• Color temperature options: warm 3000K or daylight 5000K to suit mood and tasks
• Long life and certifications: 25,000-hour lifetime, ETL listed, 5-year warranty

Real-world usage scenarios

• Living rooms, kitchens, and home offices where bright, steady light improves comfort and focus
• Workspaces and study corners that benefit from crisp illumination and reliable performance
• Entrances and hallways where instant on and consistent color rendering matter

Usage notes

For best results, install in a well-ventilated area and avoid sealed lampshades to keep the ceramic heat sink functioning efficiently. The bulb features an E26 base for easy retrofit into most standard fixtures and is designed to deliver consistent light quality across a broad operating range.