Ballasts

The magic of HID lighting relies on the smooth delivery of electrical current from ballasts. Behind the curtain, ballasts are simply power transformers that feed lights a clean, high-voltage signal to initiate arcing and manage light performance.

5 products

Ballasts

Grow light ballasts power high-intensity grow bulbs and lamps by regulating the voltage to a high-intensity discharge (HID) light or compact fluorescent light. Some ballasts power specific bulb types while others are "switchable," capable of powering both HPS and MH bulbs. There are three types of ballasts: electronic, digital, and magnetic. Ballasts typically are available in various wattages from 315w to 1000w. ...

Various Grow Light Ballast Types

At GrowersHouse, we carry a targeted selection of high-quality electronic ballasts and other ballast types to fit your setup. Whether you're running a single grow tent or managing a large-scale operation, we have options compatible with a range of lamp types. Here are the main types of ballasts to consider:

Digital ballasts use microprocessors to monitor and regulate voltage, often are dimmable, and maximize both system efficiency and lamp life.
Double-ended ballasts safely power double-ended fixtures such as HID lamps.
Magnetic ballasts use an electromagnetic system to control voltage, are typically cheaper, and may include rapid-start configurations.
Fluorescent ballasts power fluorescent lamps (e.g., T5 bulbs) and should be selected with the proper ballast factor in mind.

Right Electronic Ballast for Your System

Our inventory covers multiple wattage ranges, including 600W, 945W, and 1000W, to match your specific lamp type, canopy size, and power supply.

Alongside full ballast units, you'll find critical accessories such as plug adapters and power cords compatible with Hydrofarm, Phantom, or Xtrasun setups. Whether you're using CMH bulbs for spectrum efficiency or HID lamps for maximum bloom-phase intensity, we offer the gear to keep your lighting system powered and optimized.

Trust in GrowersHouse

GrowersHouse brings together proven products, expert guidance, and fulfillment you can rely on. We offer free shipping on qualifying orders throughout the lower 48 states and fast, same-day Will Call pickup at our Tucson or Phoenix locations when you need your equipment immediately.

Power Your Setup with Energy-Efficient Ballasts

The right HID or CMH ballast ensures your fixtures operate at maximum energy efficiency, minimizes power loss, and gives you flexibility to scale or fine-tune your lighting design for proper operation.

Browse our full selection of ballasts and controller accessories today to ensure your canopy stays well-lit, efficient, and dialed in for success.

Frequently Asked Questions

What does a light ballast actually do?

It regulates the electrical current to your grow light, ensuring your bulb starts up properly and operates at the intended power factor and energy usage level.

Can I use any ballast with any grow bulb?

No, grow bulbs must be matched with a compatible ballast type and wattage. Using the wrong combination can damage equipment or reduce efficiency.

How do I know when it's time to replace a ballast?

If your lights flicker, hum, or fail to start, your ballast could be failing. Start with a visual check—look for scorch marks, frayed wires, or swollen components. If no damage is visible, use a multimeter to check for continuity and electrical issues.