L.B. White Volt 3 Electric Heater – 3000W, 240V, 12.5 Amp
Model: Volt 3
The L.B. White Volt 3 is a compact, high-output electric heater producing 3,000 watts (3 kW) of heat at 240V / 220V, drawing 12.5 amps. Despite its small footprint, it delivers roughly twice the heat output of a standard 120V space heater, making it one of the most efficient options in its size class.
The Volt 3 uses a NEMA 6-15P plug, common in commercial, industrial, and some residential settings. It is engineered for continuous duty — no cool-down periods required — and its 205 CFM fan motor moves warm air efficiently throughout the space for fast, even heat distribution.
Specifications
- Wattage: 3,000W (3 kW)
- Voltage: 240V / 220V
- Amperage: 12.5 amps
- Plug type: NEMA 6-15P
- Fan output: 205 CFM
- 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)
- Certification: UL Approved
Best Applications
- Small to mid-size hobby and commercial greenhouses
- Workshops and garages
- Agricultural drying spaces
- Any space needing reliable supplemental heat from a 240V circuit
Electrical Requirements
The Volt 3 requires a 220/240V electrical connection with a NEMA 6-15P outlet. This plug type is standard in many commercial and industrial settings but may require a dedicated circuit or adapter in residential installations. Professional evaluation of your electrical setup is recommended if you are unsure.
Frequently Asked Questions
What outlet does the L.B. White Volt 3 require?
The Volt 3 uses a NEMA 6-15P plug, which requires a 240V outlet. This is common in commercial and industrial settings. Residential users may need a dedicated circuit or a licensed electrician to install a compatible outlet.
How many watts is the Volt 3?
The Volt 3 produces 3,000 watts (3 kW) of heat at 240V, drawing 12.5 amps.
What size greenhouse can the Volt 3 heat?
The Volt 3 is well-suited for small to mid-size greenhouses. As a general guideline, 3,000 watts can maintain temperatures in a well-insulated greenhouse of approximately 200–400 square feet, depending on your climate, insulation quality, and desired temperature differential.
Does the Volt 3 have a built-in thermostat?
Yes. The Volt 3 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 3 safe to run continuously?
Yes. The Volt 3 is rated for continuous duty with no cool-down periods required. It also includes automatic overheat protection that shuts the unit off if internal temperatures exceed 104°F.
How does the Volt 3 compare to the Volt 6?
The Volt 3 produces 3,000W at 12.5 amps and uses a NEMA 6-15P plug, while the Volt 6 produces 6,000W at 25 amps and uses a NEMA 14-30 or 14-50 (dryer outlet). The Volt 3 is the better choice for smaller spaces or where a dryer-style outlet is not available.
Is the Volt 3 UL approved?
Yes. The L.B. White Volt 3 is UL Approved for safe use in residential, commercial, and agricultural environments.
| Model | L.B. White Volt 3 Electric Heater |
| Type | Accessory |

