Infratech WD Series 39-Inch Dual Element 4000/5000 Watt Flush Mounted Marine Grade Electric Heater

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    Tired of battling the elements to keep your outdoor space warm and inviting? Regular patio heaters fall short when it comes to durability, especially in saltwater environments.

    Say goodbye to frequent replacements and repairs with the Infratech WD 39" Dual Element Marine Grade Electric Heater— the ultimate solution for outdoor heating in even the harshest climates. Made from premium 316 Stainless Steel, this heater provides exceptional marine-grade endurance and unmatched resistance against corrosion.

    With versatile patio heater installation, it can be mounted on the ceiling or wall, or go for the ultra-seamless flush mount option—it's your choice! No matter where you install it, rest assured that this heater is designed for heights between 8' and 12', ensuring optimal heating coverage in your space.

    The Infratech WD Electric Patio Heater emits safe and clean wavelengths of light that solid objects efficiently absorb in an 8 x 10 ft area. Say goodbye to wasteful heating. With 90% energy conversion into lavish Infrared Heat, it ensures that you're enveloped in cozy warmth without losing any heat to the wind.

    Indulge in the warmth of an electric patio heater that boasts unbeatable durability. Plus, enjoy free shipping on all Made in USA Patio Heaters today. Shop now!

    The WD 39" Marine Grade Heater is also available in Commercial Grade Stainless Steel.

    Note: Less heat is provided in extremely cold or windy areas. Please see the recommendations below and the Infratech Heat Coverage Guide for setup recommendations.

    Heaters greater than 240 Volts are for “Commercial Use Only. Risk of fire. Do not use as a residential or household heater.” This is for your safety.

    Standard Stainless Steel 120V/240V models are usually in stock and ready to ship. Custom voltages are special orders with 2-4 Weeks Manufacturing Lead Time.

    Need help determining the right heater and setup for your space and heating needs? Or, do you need more information about the current lead time? Give us a call at 1-866-713-4844 or email us at support@patiofever.com and we'll be happy to help!

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    Download Specs

    Infratech WD Series Marine Grade Electric Heater Videos:

    Key Features:

    • UL Listed for Indoor and Outdoor installations due to low clearance requirements, install anywhere you want.
    • Includes a 6" Mounting Kit with inset brackets for a floating effect. An optional flush mount kit is available for recessed installation.
    • Marine Grade 316 Stainless Steel Construction ensures the best corrosion resistance in locations exposed to corrosive saltwater air.
    • Infratech heaters can be used with various control options and are compatible with top-selling Smart Home systems like Lutron™, Crestron™, Control 4™, and others for your convenience.
    • Dual Element Heaters pack twice the heat of their Single Element Counterparts.
    • Available in 208V, 240V, 277V, or 480V to meet your needs.

    Other Features:

    • Quartz Element with approximately 5,000 hours of use for efficient heating to keep you comfortable.
    • Mounted 8 to 12 ft at a 0 to 60° angle with multi-position mounting bracket tabs for flexible installation.
    • Minimal Maintenance Cost compared to gas saves you money.
    • Made in the USA, ensures high-quality materials and superior craftsmanship.


    Model Number: WD4024MG / WD5024MG 
    Manufacturer: Infratech
    Series: WD
    Indoor/Outdoor: Indoor / Outdoor
    Fuel Type: Electric
    Installation: Wall / Ceiling / Flush Mounted
    Material: 316 Stainless Steel
    Grade: Commercial / Residential
    Heater Type: Infrared
    Heating Area: 8 ft x 10 ft / 9 ft x 10 ft
    BTUs: 13,648 / 17,060
    Watts: 4,000 / 5,000
    Volts: 208 / 240 / 277 / 480
    Dimensions: 39" L x 8.19" W
    Certifications: UL Listed
    Warranty: 3-Year Warranty

    What's in the Box:

    • Electric Patio Heater - 1 pc.
    • Mounting Bracket - 1 set
    • User's Manual - 1 pc.


    Infratech offers a variety of control options, from duplex stack switches with high/low heat to more advanced controllers with more features. For Sleep Timer, temperature control, and other control options, get an Analog Controller, Universal Control, or a Home Management System for smart home integration.

    Flush mount your electric heater with an optional flush mount frame to seamlessly recess it into the ceiling.

    The best angle to install this heater is approximately 45º. If installed outdoors, it is best to install it at the "cold side" for efficient heating and under a protective roof or weather cover, whenever possible. Even with its all-weather construction, your heater will last longer and look better if it is protected from rain and snow.

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  • There are currently no warnings.

    This product is safe to use according to the manufacturer's instructions.