Marley SDH4843 Portable Heater
- Model # SDH4843
- Portable Heater
- 48,000 W
- 480V
- Three-phase
Marley SDH4843 48 kW, 480V 3-phase portable high-temperature blower heater with inlet and outlet thermostats and adjustable fan speed.
$21,021.60
Available on backorder
- 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 SDH4843?
We carry 5 replacement parts for this model, all listed on one page.
Specifications
| Model Number | SDH4843 |
|---|---|
| Brand | Marley |
| Type | Portable Heater |
| Wattage | 48,000 W |
| Voltage | 480V |
| Phase | Three-phase |
| Colors | Red |
| Heating Capacity | 48 kW (163,776 BTU/hr) |
| Voltage / Phase | 480V, 3-phase |
| Amperage | 58.9A |
| Airflow | 2,200 CFM at 1,800 RPM (factory setting) |
| Dimensions (H x W x D) | 38-1/2" x 30-1/4" x 44" |
| Thermostat Range | 60-180°F (inlet and outlet) |
| Manufacturer Code | 48KW 480V3P SUPER HIGH TEMP BL |
| Condition | New |
| SKU | YSDH4843 |
Ideal For
- Mining
- Oil/Gas Extraction
- Construction Sites
- Food Processing
- Textile Mills
- Paper Mills
- Printing Plants
- Chemical Plants
- Truck Docks
- Marinas
Ordering
| Availability | Backorder — call for an estimated ship date |
|---|---|
| Returns | See our return policy |
About the Marley SDH4843
The Marley SDH4843 is a 48 kW electric portable blower heater built for 480-volt, three-phase power. It is rated 163,776 BTU per hour and moves about 2,200 CFM at its factory fan setting, with a maximum temperature rise of 144°F at its highest rated static load.
A belt-driven fan with adjustable pulleys lets you set fan speed between 1,500 and 2,300 RPM. Two thermostats, one at the inlet and one at the outlet, each adjustable from 60 to 180°F, control minimum and maximum air temperature, and a high-limit cutout handles overtemperature. It also has pilot lights and a toggle switch.
The heater rolls on two semi-pneumatic wheels and a locking caster, with handles on both sides, and can feed a 20-inch flexible duct to carry heat where it is needed. It is not for use as a household heater, in bathrooms or laundry areas, outdoors or in explosive atmospheres.
Installation Tips
Disconnect power before installing or servicing. Ground the unit first, use branch circuit wire rated at least 90°C, and use proper strain relief with SO cable. The unit is factory wired for three-phase delta. The fan ships set at 1,800 RPM; when adjusting pulleys, belt deflection should be about 1/2 inch. Do not use heat mode in room temperatures above 130°F.
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 attach ducting to it?
Yes. It is designed for 20-inch flexible duct. Added duct and bends raise static load, which lowers airflow and raises temperature rise; the external static load should not exceed 0.38 inches of water.
What cord size does it need?
Minimum 4 AWG portable cord, and no longer than about 50 feet is recommended. It is not meant to be run on an extension cord.
Where can I find replacement parts for the Marley SDH4843?
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 SDH4843?
It’s a 480V three-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?
This unit is currently on backorder. Call us at 800-654-3545 for an estimated ship date.
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 SDH4843
See all parts →Parts listed for this exact model.

