HPS Ballasts: Digital vs Magnetic Comparison
The ballast is the heart of your HPS system. Choose wrong and you risk bulb damage, inefficiency, or fire hazards. Our verified comparison helps you choose right.
- Higher efficiency (95-98%)
- Dimmable output options
- Soft-start extends bulb life
- Lighter weight, less heat
- Built-in safety features
- Higher upfront cost
- Lower initial cost
- Simple, proven technology
- No RF interference
- Lower efficiency (85-90%)
- Heavy and runs hot
- No dimming capability
Efficiency Rating
Look for 95%+ efficiency. Every percentage point saves electricity and reduces heat.
Dimmability
Allows output adjustment for different growth stages or heat management.
Safety Features
Soft-start, thermal protection, and short circuit protection are essential.
Warranty
Quality ballasts come with 3-5 year warranties. Avoid anything less than 2 years.
Digital Ballasts
Digital ballasts offer superior efficiency, dimming capabilities, and safety features. The higher upfront cost is offset by lower electricity bills and longer bulb life.
| Brand/Model | Wattage Options | Dimmable | Efficiency | Warranty | Price | |
|---|---|---|---|---|---|---|
Phantom PHB2010 | 400W 600W 1000W | 97% | 3 years | $249.95 | Buy | |
Gavita DigiStar 600W | 400W 600W 660W | 98% | 5 years | $279.95 | Buy | |
Lumatek Digital Ballast 600W | 400W 600W | 96% | 3 years | $199.95 | Buy | |
Hydrofarm Quantum Digital 1000W | 600W 1000W | 95% | 2 years | $179.95 | Buy | |
Sun System 1 LEC Commercial | 315W 630W | 97% | 3 years | $299.95 | Buy |
Ballast Safety & Installation
Proper ballast installation is critical for safety. Learn about wiring, placement, and common mistakes to avoid in our detailed ballasts guide.
Pair Your Ballast with the Right Bulb
Matching your ballast to a compatible bulb is essential. Browse our complete bulb guide or use the equipment directory to find compatible setups.