Infrared Patio Heater · 4000W 208V 39 in · Dual Element Biscuit Finish · Infratech WD-4028-SS-BI
What this product is for
This Infratech WD-Series dual-element electric infrared heater is designed for outdoor and semi-exposed heating where direct radiant warmth is preferred over forced air. It is suited to patios, terraces, restaurant seating areas, hospitality spaces, and commercial entrances that need focused heat from a wall or ceiling mounted fixture.
Use for
Use for covered patios, pergolas, outdoor dining areas, condo amenity spaces, and light commercial applications where a 208V heater is specified. The dual-element WD-Series format is commonly selected for larger coverage needs and for installations paired with compatible controls to vary heat output.
Avoid for
Avoid using this heater where supply voltage does not match 208V, where mounting conditions fall outside manufacturer instructions, or where an enclosed indoor comfort-heating appliance is required. It is also not the right choice when broad air heating is expected, since infrared heaters warm people and surfaces more directly than the surrounding air.
Best for
Best for electricians and contractors specifying a fixed-mount radiant heater for outdoor hospitality, residential patio upgrades, and commercial exterior gathering areas. The biscuit finish helps coordinate with lighter architectural finishes, while the dual-element design is intended for more concentrated heat than single-element models.
Installed in
Typically installed on walls or ceilings in covered exterior spaces. Manufacturer literature indicates WD-Series dual-element heaters are commonly used at mounting heights up to 12 ft (3.7 m), depending on layout and application.
Why this product exists
This model exists for projects that need stronger radiant output from a compact 39 in (991 mm) heater body on 208V power. Compared with lower-output patio heaters, it is intended to deliver more concentrated warmth across seating or standing zones without introducing fan noise or moving air.
As a rule of thumb, infrared comfort heating is highly site-dependent. Actual performance depends on mounting height, wind, ambient temperature, surrounding surfaces, and local electrical code.
Compared with similar products
Compared with Infratech single-element W-Series heaters, the WD-Series dual-element platform is intended for more intense heat and larger-scale coverage. This 4000W, 208V version draws approximately 19A, so electricians will typically review branch circuit sizing, disconnecting means, and control compatibility during specification. Continuous-load planning and final installation requirements must follow applicable code and manufacturer instructions.
Specifications
- Brand: Infratech
- Manufacturer part number: WD-4028-SS-BI
- Series: WD-Series
- Product type: Electric infrared radiant patio heater
- Element configuration: Dual element
- Power: 4000W
- Voltage: 208V
- Current draw: 19A
- Length: 39 in (991 mm)
- Approximate dimensions: 39 x 8 x 3 in (991 x 203 x 76 mm)
- Finish/colour: Biscuit
- Construction platform: Stainless steel heater housing
- Typical application: Outdoor and semi-exposed residential or commercial spaces
- Typical mounting guidance: Up to 12 ft (3.7 m), subject to manufacturer instructions and site conditions
Minimum Order $20
We accept the following payment methods:

Credit Card can offer cardholders convenience, security, rewards, and the opportunity to build a healthy credit history.
Click here for Contractor Cash Account
Trade Credit is a standard financing option for contractors and construction companies to obtain supplies and keep their projects moving. We offer 30-day credit terms to trade contractors on approved applications only.
Click here for Contractor Credit Account 
Standard Shipping-Free on orders over $500 in Metropolitan Areas / Subject to $750 in Rural Areas.
Minimum Order Is $20
Freight Surcharge Apply To Oversized/Over-Weight Items(Not Limited To):
- PVC and EMT Pipe
- Wire and Cable
- Items over 48 inches in length
Surcharges are applied to items on an individual basis regardless if the rest of the order meets prepaid levels. If a freight line appears at the time of check out it only applies to the Items carrying a surcharge and not the entire basket of goods.
Shipping Options:
- A courier can deliver to your home, office, or your job site
- Pick up at local depot near you (applies to the following locations)
Edmonton Warehouse 8135 Roper Rd Edmonton, T6E 6S4, AB
Orders are typically delivered within two to eleven business days. The transit time begins the first full shipping day after your order leaves our warehouse. Please allow an additional 2-5 days for delivery to remote locations, additional fees may apply.
THE FOLLOWING APPLIES TO STANDARD SHIPPING OPTIONS
- We cannot deliver to P.O. boxes.
- A signature may be required for shipments over $500.
- No weekend delivery.
- Wire & cable, EMT or PVC conduit, tube lamps 4ft or greater, and 10ft ground rods & mast pipes have special conditions.
Standard Shipping cost on orders less than $499
Total shipping cost = "Per Shipment" cost + "Per Item" cost. The "per item" cost is listed in terms of price per pound.
Product Group | Per Shipment* | Per Item |
|---|---|---|
Boxes | $6.99 | $1.49/lb |
Conduit & Raceway | $149.99 | $2.49/lb |
Connectors & Fittings | $5.99 | $1.19/lb |
Data & Structured Home | $5.99 | $1.19/lb |
Distribution Equipment | $5.99 | $1.19/lb |
Emergency Lighting | $6.99 | $1.49/lb |
Heating & Ventilation | $6.99 | $1.49/lb |
Lighting Controls | $5.99 | $1.19/lb |
Lighting Indoor | $6.99 | $1.49/lb |
Lighting Outdoor | $6.99 | $1.49/lb |
Tools | $4.99 | $.99/lb |
Wire & Cable | $49.99 | $2.29/lb |
Wiring Devices | $5.99 | $1.19/lb |
Any combination of the above items | Highest applicable per-shipment charge | As above |
Effective Date: August, 15, 1998(Updated August 2026)
At Evolt Electrical Supply, customer satisfaction is our top priority. Please review our return policy below:
Returns
Defective Items:
- If you receive a defective item, you may return it for a replacement or refund within 30 days of purchase.
- To initiate a return, please contact our customer service team with your order number and a description of the defect.
Non-Defective Items:
- We do not accept returns for non-defective items. All sales are final once the product is shipped or ordered from the manufacturer. In certain circumstances we may amend this so feel free to contact our customer service team.
Return Process
Authorization:
- Before returning any items, you must obtain a Return Merchandise Authorization (RMA) number from our customer service team. Returns without an RMA number will not be accepted.
- Backordered items can not be cancelled if the item is in transit from the manufacturer, contact us to review.
Shipping:
- Customers are responsible for the return shipping costs. We recommend using a trackable shipping service or purchasing shipping insurance.
Condition:
- Returned items must be in their original packaging and condition. Any items returned damaged due to improper packaging or misuse will not be eligible for a refund or replacement.
Refunds
- Once we receive and inspect your returned item, we will notify you of the approval or rejection of your refund.
- Approved refunds will be processed within [7] business days and a credit will automatically be applied to your original method of payment.




