Infratech Comfort


Infratech Comfort 39" 4000 Watt WD Series Dual Element Heater

Volts: 277V
Color: Beige

Estimated Arrival: Between and . (To All Contiguous States)

✔ Same-Day Order Processing
✔ Free Returns
✔ No Restocking Fees
✔ Financing Options Available

Text or call 888-992-1556, start live chat, or email with any questions. Our team is available to serve you 8:00 AM - 11:59 PM ET, 7 days a week.

High-powered, dual-element WD-Series
 fixtures provide more concentrated heat for large-scale coverage needs.Our products are built to deliver comfort and convenience – which is why they’re compatible with the latest trends in home automation technology. WD-Series features include minimal clearance requirements, recessed mounting options, short standoffs, and mounting heights between 8-14 feet.


General Features

  • The powerful dual-element fixtures provide concentrated heat for larger-scale applications.
  • The dual-element fixtures produce more intense heat and can be mounted up to 14’.
  • Fixtures are available in lengths of 33”, 39”, and 61 ¼”.
  • The WD-Series Dual Element fixtures are a classic design by Infratech and are most commonly used for basic installations or flush mount applications.
  • Typically installed with custom controls to vary the electric load for comfortable heat in a wide range of conditions.
  • May also be installed with duplex/stack switches for a half-power or full-power option.
  • Choose from Brushed 304 Stainless Steel, Black, Mineral Bronze, White, Almond, Beige, Biscuit, Copper, and Grey.
  • Features: Minimal Clearance Requirements, Recessed Mounting Options, Short Standoffs, and Mounting Heights between 10’-14’.
  • Includes: Standard Mounting Brackets that can be used



Model WD4028SS WD4024SS WD4027SS WD4048SS
Watts 4000 4000 4000 4000
Color Stainless Steel Stainless Steel Stainless Steel Stainless Steel
Volts 208V 240V 277V 480V
Amps 19.2 16.7 14.4 8.3
Length 39" 39" 39" 39"

Required to complete the unit:

  • Control System.

Click here to see Color Options

C-Series heaters are available in a range of colors, to coordinate with your interior or exterior environment. Choose from brushed stainless steel or eight standard color finish options.

Click here to see Mounting Options

Our low-profile heaters are suitable for indoor and outdoor installations and offer a pleasing, streamlined look due to low clearance requirements. Features like floating mounts with inset mounting brackets combine a sleeker profile with concentrated heat output, for optimal warmth and style.

Every heater comes with a set of brackets for simple installation. Infratech also offers a great selection of other mounting options. These options help integrate your outdoor heating seamlessly into your outdoor living space.

Click here to see Coverage Area

Different spaces have different needs. You may require multiple heaters to properly heat the areas noted below. To find out more about which heating solution is right for your needs, click here to get started.

Click here to see Control Options

Enjoy a wide range of control options – from our exclusive smart home integration offering to our new Universal Control Panel, which enables you to use the dimmers of your choice along with remote functionality via mobile device or smart home assistant.

Value Controls

On/Off Single Switch

  • Your Simple On/Off Switches may be used in conjunction with all heaters.
  • An ideal low-cost option for your single element heaters
  • 20 Amp max per switch
  • Wire your heater to the switch, then the switch to your electrical service panel
  • You may run more than 1 heater from a single switch if they do not exceed the 20 allowable Amps, but it is not recommended.

On/Off Duplex Stack Switch

  • Your Duplex Stack Switches may be used with all heaters.
  • An ideal low-cost option for your dual element heaters allowing you to turn on both elements or just 1 element for ½ power.
  • 40 Amp max per stack, 20 Amps per switch.
  • Wire your heater to the switch, then the switch to your electrical service panel.
  • You may run your single element heaters from each switch if they do not exceed the 20 allowable Amps per switch, but it is not recommended.

Infinite Control (INF) Regulator

  • This control allows you to turn up or down the intensity of the heater.
  • Each dial has a max of 3,000 Watts allowed.
  • Each dial has a max of 15 Amps allowed.
  • Will work with all styles of heaters.
  • Controlling each element separately using 2 INF Switches for a Dual Element unit is not recommended.

Custom Controls

Solid State Relay Package

  • Infratech’s Solid State Controls are engineered for your individual project and are suitable for commercial or residential installations of any size.
  • Multiple zoning capabilities.
  • Allows for the option to adjust the intensity of heat of one or more heaters in a specified target area.
  • Available with optional timers.
  • Controls are built to UL 508 listing, which is a higher safety standard than the National
  • Electric Code (NEC).
  • Heaters are hard-wired directly to the Solid State Relay Panel.
  • Tested before leaving the factory, and provided wiring diagrams for each installation.

Universal Control Panel

  • 120V Leviton Universal Slide Dimmer provided for convenience (1 per Relay)
  • The Universal Control is a complete solution that will work with almost any 120V lighting System
  • Universal Control Panel is 508/UL-listed and made in the USA
  • A WiFi/Bluetooth compatible device can be purchased to gain this function

Home Management System

  • Infratech’s Home Management Control is compatible with top-selling systems like Lutron™, Crestron™, Control 4™, and others.
  • Infratech’s simple interface requires a 0-10V DC signal for streamlined installation and straightforward programming.
  • This control option allows the user the ability to save preferred heat settings for off-site control via mobile device, control zones, heat intensity, timer functions, and more!

Click HERE to shop for more Custom Control options.

Why infrared heat?

A heated quartz element emits a safe, clean wavelength of light that is only absorbed by solid objects, transferring heat directly to a person, table, or floor rather than heating the air. For this reason, infrared heat can be distributed very evenly, and will not simply "blow away" in windy or drafty conditions. Infratech medium wave quartz element heaters are 93% efficient and emit a barely discernible, pleasing glow that will not affect the ambiance of your gathering – unlike competitive short-wave or halogen electric heaters that produce a very harsh glare or bright-colored light.

Cost of Operation and Maintenance


It’s simple to determine the cost of operating an Infratech heater—multiply the rate charged by your local utility company by the wattage of your heater.

Your Utility Rate X Wattage of Your Heater = Cost of Operation

EXAMPLE: Your utility charges $0.15* / kilowatt hour (kW) X 3 (for a 3000 watt heater) = $0.45 / hour

***This is the National Average. Utility charges will vary.***



Unlike traditional gas heaters, Infratech electric heaters are virtually maintenance-free. For long-lasting use, we recommend once a year to spray the heater with a hose and wipe it down. Our elements are rated to last 5,000 hours, plus they are simple and inexpensive to replace.