Marley WHB3404FC Wall Heater
- Model # WHB3404FC
- Wall Heater
- 3,000 W
- 240/208V
- Single-phase
Marley WHB3404FC fan-forced electric wall heater, 4000/3000 watts at 240/208 volts, with rotary thermostat and disconnect switch.
$925.60
if ordered in the next
In stock
- Genuine MarleyFactory-new unit
- Same-Day ShippingIn-stock orders by 4 PM Central
- Repair PartsParts for this model
- Expert Support800-654-3545Mon–Fri, 8 AM–5 PM Central
Need parts for the Marley WHB3404FC?
We carry 11 replacement parts for this model, all listed on one page.
Specifications
| Model Number | WHB3404FC |
|---|---|
| Brand | Marley |
| Type | Wall Heater |
| Wattage | 3,000 W |
| Voltage | 240/208V |
| Phase | Single-phase |
| Color | White |
| Temp Range | 40°-90°F |
| CFM | 100 |
| Grille | 19-5/16" H x 15-3/4" W x 7/8" D |
| Back Box | 18-1/4” H x 14-5/16” W x 3-3/4” D |
| Voltage | 240V / 208V, single phase |
| Wattage | 4000W / 3000W (field convertible to 2000W / 1500W) |
| Amperage | 16.7A / 14.5A at full wattage |
| Minimum Wire Size | 10 AWG (12 AWG at half wattage) |
| Existing-Wall Opening | 14-1/2 in x 18-1/2 in |
| Mounting | Wall only (recessed, or surface with frame) |
| Manufacturer Code | 4000/3000W 240/208V 1P WH NW |
| Condition | New |
| SKU | YWHB3404FC |
About the Marley WHB3404FC
The Marley WHB3404FC is a fan-forced electric wall heater from Marley's WHB3000 series for 240- or 208-volt single-phase circuits. It delivers 4000 watts at 240 volts or 3000 watts at 208 volts. It comes wired for full output, and removing a red jumper converts it in the field to half wattage. A rotary thermostat sets the temperature, and a fan-only setting sits about 30 degrees past OFF.
A disconnect switch is mounted in the back box. A manual-reset thermal overheat protector with a red RESET button sits behind the grille. The fan keeps running after shutoff to cool the elements. The heater conforms to UL 2021 and CSA C22.2 No. 46.
The heater is wall-mount only. It can be recessed in new or existing walls, or surface-mounted with a frame.
Installation Tips
Turn off power at the breaker before installing or servicing the heater. According to the manual, keep at least 8 inches from the floor and adjacent walls, 36 inches from the ceiling, and 3 feet from combustibles at the front. Do not mount it in a ceiling, and do not run it without the grille installed.
Ideal For
- Mechanical Rooms
- Vestibules
- Entrance Ways
- Lobbies
- Hallways
- Stairwells
- Restaurants
- Conference Rooms
- Medical Offices
- Basements
- Family Rooms
Ordering
| Availability | In stock |
|---|---|
| Ships | Same business day if ordered by 4 PM Central |
| Returns | See our return policy |
Why Buy From Carroll Parts?
- Helping Fix Things Since 1938Over 85 years of experience
- Same-Day ShippingIn-stock orders placed by 4 PM Central ship the same business day
- Repair Parts in One PlaceWe carry all available replacement parts for this model
- Real Experts800-654-3545 · Mon–Fri, 8 AM–5 PM Central
Frequently Asked Questions
Can I reduce the wattage?
Yes. The manual says it is factory-wired for the higher wattage and can be field-converted to half wattage by removing a red jumper wire.
Can I run just the fan without heat?
Yes. Turning the thermostat about 30 degrees past OFF runs the fan without the elements, according to the manual.
Where can I find replacement parts for the Marley WHB3404FC?
Every part we carry for this model is on its repair parts page. Not sure which part you need? Call 800-654-3545.
What voltage is the Marley WHB3404FC?
It’s a 240/208V single-phase unit. Make sure it matches the supply voltage where it will be installed — call us at 800-654-3545 if you’re not sure.
When will my order ship?
In-stock orders placed by 4 PM Central ship the same business day.
What is your return policy?
Items must be new and unused. You can return them within 90 days. Please read our return policy before sending anything back. Questions about a return? Call 800-654-3545 or email [email protected], Mon–Fri, 8 AM–5 PM Central.
Replacement Parts for the Marley WHB3404FC
See all parts →Parts listed for this exact model.








