L.B. White Volt 9 Electric Heater – 9000W, 240V, 37.5 Amp

The L.B. White Volt 9 is the highest-output model in the Volt electric heater family, producing 9,000 watts (9 kW) of heat at 240V / 220V and drawing 37.5 amps. It is engineered for large spaces and demanding applications where consistent, high-volume electric heat is required.

Built with the same rugged powder-coated steel construction and stainless-jacketed heating coils as the rest of the Volt line by L.B. White, the Volt 9 is rated for continuous duty and disperses heat effectively across large areas via its uni-directional fan. It is the go-to choice for large commercial greenhouses, agricultural buildings, and industrial drying operations.

Specifications

• Wattage: 9,000W (9 kW)
• Voltage: 240V / 220V
• Amperage: 37.5 amps
• Thermostat range: 32°F – 100°F (integrated ambient thermostat)
• Overheat protection: Automatic shutoff at 104°F
• Casing: Durable powder-coated steel
• Heating elements: Stainless-jacketed heating coils
• Airflow: Uni-directional fan for fast, even heat distribution
• Duty rating: Continuous (no cool-down periods required)

Best Applications

• Large commercial and hobby greenhouses
• Agricultural buildings and barns
• Workshops, garages, and warehouses
• Industrial drying and curing operations
• Any large space requiring high-output 240V electric heat

Electrical Requirements

The Volt 9 requires a 240V circuit rated for at least 37.5 amps. This typically requires a dedicated 50-amp circuit and appropriate outlet. Confirm your panel capacity, circuit breaker rating, and receptacle type before purchase. Professional electrical evaluation is strongly recommended if you are unsure about your setup.

Frequently Asked Questions

How many watts is the L.B. White Volt 9?
The Volt 9 produces 9,000 watts (9 kW) of heat at 240V, drawing 37.5 amps. It is the highest-output model in the L.B. White Volt electric heater line.

What electrical circuit does the Volt 9 require?
The Volt 9 requires a dedicated 240V circuit rated for at least 37.5 amps — typically a 50-amp breaker with an appropriate 240V outlet. Unlike the Volt 6, it is not designed to plug into a standard dryer outlet. Professional installation by a licensed electrician is recommended.

What size greenhouse can the Volt 9 heat?
At 9,000 watts, the Volt 9 can maintain temperatures in a well-insulated greenhouse of approximately 800–1,200 square feet, depending on climate, insulation quality, and desired temperature differential. It is best suited for large commercial or high-tunnel greenhouse applications.

Does the Volt 9 have a built-in thermostat?
Yes. The Volt 9 includes an integrated ambient thermostat with a range of 32°F to 100°F, cycling on and off automatically to maintain your set temperature.

Is the Volt 9 safe to run continuously?
Yes. The Volt 9 is rated for continuous duty with no cool-down periods required. Automatic overheat protection shuts the unit off if internal temperatures exceed 104°F.

How does the Volt 9 compare to the Volt 6 and Volt 3?
The Volt 9 (9,000W / 37.5A) is the largest in the line, followed by the Volt 6 (6,000W / 25A, NEMA 14-30/14-50 dryer outlet) and the Volt 3 (3,000W / 12.5A, NEMA 6-15P). Choose the Volt 9 for the largest spaces; the Volt 6 for large greenhouses with a dryer outlet; and the Volt 3 for smaller or supplemental heating needs.

Who makes the Volt 9?
The Volt 9 is manufactured by L.B. White, a US-based company with decades of experience producing commercial and agricultural heating equipment trusted by greenhouse growers, farmers, and contractors.