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Marley GH48RPQ Berko® Fan-Forced Electric Garage Heater, 208/240V Black
The Marley GH48RPQ is a Berko® fan-forced electric garage heater engineered for fast, reliable heat in garages, workshops, and other non-residential utility spaces. This dual-voltage unit delivers 1800/3600-Watt output on a 208-Volt supply or 2400/4800-Watt output on a 240-Volt supply, giving installers the flexibility to match heating capacity to whatever electrical service is available on the job. Finished in black, the GH48RPQ pairs Marley Engineered Products' Q-Mark and Berko® heating expertise with a rugged, fan-forced design built for demanding non-residential environments where dependable recovery time and consistent airflow matter as much as raw heat output.
Key Features
- Dual-Voltage Operation: Rated for 1800/3600-Watt at 208-Volt or 2400/4800-Watt at 240-Volt, allowing a single unit to serve either common electrical supply without swapping models.
- Fan-Forced Heating: An integrated fan circulates heated air throughout the space for fast temperature recovery and even coverage, rather than relying on passive convection alone.
- Selectable Wattage Output: Two heat settings are available at each voltage (1800W/3600W at 208V; 2400W/4800W at 240V), letting installers size output to the room and the available branch circuit.
- Voltage-Matched Flexibility: Because the GH48RPQ supports both 208-Volt and 240-Volt service, the same unit can be specified across job sites with different electrical infrastructure, simplifying stocking and replacement.
- Black Housing: Durable black finish suited to garage, shop, and utility-area installations where a clean, low-maintenance appearance is preferred.
- Berko® by Marley Engineered Products: Manufactured under the Q-Mark/Berko® heating line, part of Marley Engineered Products' commercial and industrial-duty heater portfolio.
Technical Specifications
- Refer to manufacturer documentation for complete technical specifications.
Typical Applications
- Garages and Detached Workshops
- Utility, Storage, and Mechanical Rooms
- Commercial and Industrial Spot Heating
- Maintenance Bays and Equipment Rooms
- New Construction and Retrofit Installations
Why Marley?
Marley Engineered Products backs the Q-Mark and Berko® heating lines with a focus on rugged, dual-voltage designs built for real-world electrical service constraints, so contractors are not locked into a single supply voltage per model. The GH48RPQ's fan-forced construction and field-flexible 208/240-Volt wattage options make it a dependable choice for professionals heating garages, shops, and utility spaces where consistent, code-compliant performance and simple electrician-friendly setup matter. Choosing the Berko® GH48RPQ means specifying a heater built by a manufacturer focused specifically on commercial and industrial electric heating equipment.
Manufacturer Resources
GH48R Electric Garage Heater Submittal Sheet
Product Specs
- Product Type:
- Garage Heater
- Voltage Rating:
- 208/240V
- Product Color:
- Black
- Department:
- Electrical
- Product Group:
- Heating
- list_batch:
- MAR-20260910
- Product Subgroup:
- Heaters
Marley GH48RPQ – Frequently Asked Questions
1) Can the Marley GH48RPQ garage heater run on 208V, or does it need 240V?
The Berko GH48RPQ is a dual-voltage heater rated for either supply. On 208V it produces 1800W or 3600W; on 240V it produces 2400W or 4800W. So you don't need a different model for a 208V commercial panel versus a 240V residential-style service, but be aware the same unit puts out less heat on 208V.
2) How many watts does the GH48RPQ put out, and can I turn it down for a smaller circuit?
Two selectable heat settings at each voltage: 1800W or 3600W on 208V, and 2400W or 4800W on 240V. That lets you size the output to the branch circuit you actually have as well as to the room, which matters when you're adding a heater to an existing garage panel rather than running new service.
3) Is the Marley GH48RPQ approved for heating a living space, or garages and shops only?
It's built for garages, workshops, utility and storage rooms, mechanical rooms, maintenance bays, and commercial or industrial spot heating. Marley describes it as engineered for non-residential utility spaces, so for a finished bedroom or office you want a wall or baseboard heater intended for occupied living areas instead.
4) Is the GH48RPQ a fan-forced heater or a radiant heater?
Fan-forced. An integrated fan pushes heated air out into the space instead of relying on passive convection, so recovery is quicker and coverage more even across a garage or shop bay. If you want heat aimed at a single work position rather than warming the whole room's air, a radiant panel or infrared unit is the better type.
5) What's the correct Marley part number to order for the black 208/240V Berko garage heater?
GH48RPQ is the manufacturer part number, from the Berko line by Marley Engineered Products (the same portfolio as Q-Mark). Quote that number when matching an existing unit or standardizing heaters across multiple shop or bay locations.
6) Where do I find the wiring and mounting details for the GH48RPQ before I rough in the circuit?
Marley publishes a GH48R submittal sheet plus full installation, operation and maintenance instructions for this heater, and the unit also appears in the Q-Mark digital catalog. Pull those for electrical rough-in, clearances, and wattage-selection wiring before you set the circuit, since the output you choose determines the breaker and conductor size.
7) I'm outfitting several shop bays on sites with different electrical service. Can I standardize on one heater model?
Yes, and that's the main reason specifiers pick the GH48RPQ. Because one unit covers both 208V and 240V service, you can stock a single model across jobs and use it for replacements, rather than carrying a separate SKU per supply voltage.
8) What color is the GH48RPQ garage heater housing?
Black, with a durable finish intended for garage, shop, and utility-area installs where you want something low maintenance that doesn't show shop dirt.
How fast can I get the Marley GH48RPQ delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Marley GH48RPQ come with a warranty?
Absolutely. The Marley GH48RPQ is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Marley GH48RPQ?
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installation tips, and troubleshooting. Contact Us
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