Berko MUH03-21 Heater

The Berko MUH03-21 Heater is a heavy-duty forced air unit heater engineered for demanding environments like warehouses, mechanical rooms, and service garages. This versatile industrial electric heater is designed for both horizontal and vertical mounting, featuring a specialized venturi outlet that ensures the necessary air throw when installed in a downflow configuration. Built with a heavy gauge die-formed steel housing, the unit utilizes an advanced pull-through air flow design to draw air across the element, promoting more even distribution and maintaining lower internal operating temperatures.

Operating as a 208/240V single phase heater, the MUH03-21 delivers 2.2kW at 208V or 3kW at 240V, producing up to 10,200 BTU/hr. The aluminum-finned copper-clad steel sheath element provides rapid heat dissipation, while the completely enclosed fan motor and automatic reset linear thermal cut-out ensure reliable performance across the 40°–90°F temperature range. Contractors will appreciate the integration of line voltage controls and individually adjustable discharge louvers for precise airflow management in transitional spaces such as loading docks or aircraft hangers.

• Dual Mounting Versatility: Can be installed as a horizontal or vertical unit heater to match specific site requirements.
• Enhanced Component Longevity: The aluminum-finned heating element and pull-through air design reduce thermal stress.
• Rugged Construction: Heavy gauge steel housing withstands the rigors of industrial and commercial settings.
• Precision Airflow: Adjustable louvers allow for targeted heat concentration in high-ceiling environments.
• Safety Integrated: Features a linear thermal cut-out with automatic reset for over-temperature protection.

What is the maximum mounting height for the Berko MUH03-21?
For optimal performance, this heater should be mounted at a maximum height of 8 feet for horizontal flow and 9 feet for vertical downflow applications.

Can I use a 24V remote thermostat with this model?
The MUH03-21 comes standard with line voltage controls. To use a low-voltage 24V thermostat, a field-installed transformer kit is required.

Is this heater suitable for outdoor use?
No, this unit is designed for indoor industrial and commercial spaces such as warehouses, factories, and garages.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.