Corrosion‐Resistant Washdown Electric Unit Heater

When the working environment pushes the limits, you deserve heat that can rise to the occasion. The Modine MEW Corrosion-Resistant Washdown Electric Unit Heater is engineered for wet, humid, and corrosive areas where standard heaters can’t survive. Designed with fully enclosed housing, sealed electrical connections, and a moisture-resistant coating, the MEW delivers dependable, long-lasting performance in facilities such as food processing plants, wastewater treatment centers, greenhouses, and car washes.

Models

10 Model Sizes: 3 kW (10,250 BTU) to 39 kW (133,100 BTU)

Where To Buy

Highlighted Features

Corrosion-Resistant Construction

Designed with a heavy-duty 304 stainless steel housing and epoxy-coated heating elements, the MEW Washdown Unit Heater resists corrosion, humidity, and chemical exposure—ideal for washdown or high-moisture applications.

Watertight, Washdown-Rated Design

Engineered to meet NEMA 4X standards, this unit features fully gasketed electrical enclosures and watertight connections—ensuring safe, dependable operation during regular cleaning or washdown procedures.

Clean, Efficient Electric Heat

Powered by electricity, the MEW provides efficient, even heat without combustion or venting requirements—delivering safe comfort in environments where air quality and sanitation are critical.

Product Details & Specifications

Key Features

Wash-Down Rated Design: Built to withstand high-pressure cleaning and direct water spray.
All-Electric Operation: No combustion or venting. Ideal for sealed or humidity-controlled spaces.
NEMA Type 4X Protection: Guards against water penetration, enhancing longevity in corrosive or washdown settings.
Epoxy-Coated Fan Blade: Contributes to a longer operational lifespan.
16-Gauge Stainless-Steel Cabinet: Provides industrial-grade durability.
Stainless Steel Elements: Enhance corrosion resistance and improve heat distribution.
Totally Enclosed Motor: Prevents moisture and contaminants from entering critical components.
High-Capacity Performance: Available in a range of kilowatt ratings to meet industrial heating demands.
Horizontal Air Discharge: Even heat distribution for open floor plans or work zones.
Easy Service Access: Hinged control panel simplifies maintenance without compromising the seal.
120 V Controls: Improves contractor pull-in reliability.
Flexible Mounting Options: Includes a stainless steel wall/ceiling mounting kit.
US Coast Guard Marine Rating Available: Only with the following selected options: a built-in manual reset, a high-temperature limit (M), and a built-in disconnect switch (D).

Options

10 Model Sizes:

MEW30 – 3 kW (10,250 BTU)
MEW50 – 5 kW (17,050 BTU)
MEW75 – 7.5 kW (25,600 BTU)
MEW100 – 10 kW (34,100 BTU)
MEW150 – 15 kW (51,200 BTU)
MEW200 – 20 kW (68,250 BTU)
MEW250 – 25 kW (85,300 BTU)
MEW300 – 30 kW (102,350 BTU)
MEW350 – 35 kW (119,450 BTU)
MEW390 – 39 kW (133,100 BTU)

Supply Voltage:

208V/1Ph/60Hz
240V/1Ph/60Hz
208V/3Ph/60Hz
240V/3Ph/60Hz
480V/3Ph/60Hz
600V/3Ph/60Hz

Additional Options:

Thermally protected 1⁄2 HP Motor with permanently lubricated ball bearings.
Optional built-in NEMA Type 4X thermostat.
Cabinet material is type 304 stainless-steel, 16-gauge (0.06” / 1.52 mm).
Upgrade all external fasteners to stainless steel
Factory-installed thermostat (built-in or remote)
Factory-installed pilot light
Factory-installed 3-position fan switch
Factory-installed door interlock disconnect
Factory-installed manual reset temperature high-limit. Includes factory-installed door interlocking disconnect switch to meet CE and U.S Coast Guard Marine Duty requirements. This option replaces the automatic reset temperature high-limit

US Coast Guard Marine Rating is available only with the following options selected:

Built-in manual reset
High-temperature limit (M)
Built-in disconnect switch (D)

Accessories

Wall Mounting Bracket
Summer/Winter Switch
Thermostat
Thermostat Guard

Warranty

75-941 Warranty Overview

Applications

The MEW is designed for spaces where moisture, chemical vapors, or wash-down procedures make other heaters fail. Common applications include:

Food and beverage processing plants
Wastewater treatment facilities
Car washes and detailing bays
Agricultural and greenhouse operations
Marine environments and coastal facilities
Industrial areas requiring regular sanitation