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QMark Electric Garage Unit Heater 6142-12284 BTU 1800-4800 Watts 208/240V GH48R

QMark Electric Garage Unit Heater 6142-12284 BTU 1800-4800 Watts 208/240V GH48R
Build Time:
3 to 5 Business Days ?
Ships By:
FedEx Ground

Build Time

The product Build Time you see represented on this site is only a typical number of days the manufacturer states it needs to build the product(s) when ordered. Build times are based on business days (excludes weekends & holidays).

The build time does not include the time it will take to ship the order to you (the customer). If an order has multiple items and comes from multiple warehouses, you may receive part of your order on one day, and then receive the remaining part(s) of your order at a later date.

*Please be aware that seasonal demand of certain equipment may cause build times to run longer than what is typical.

LIST: $338.00
Only $228.65

Using this QMark unit heater, turn your cold garage into a year-round usable living space. The included bracket makes for easy installation on the wall or ceiling of your garage, workshop or stockroom. The included remote control and timer feature make it simple to set the right temperature and to make sure the heater is only running when you need it.

Ideal Spaces: Garages, Warehouses, Storage Facilities, Stockrooms, Workshops


Built-in digital interface

Remote control included for easy operation

Optional timer feature; up to nine hours with automatic shut off

Power indicator light

Automatic fan delay eliminates cold drafts on start-up and discharges residual heat from the heater body during shut down

Stainless steel tubular heating element

Includes mounting bracket for wall or ceiling installation

Model No.:
208 / 240
South Carolina
Made In U.S.A.:
208V: 8.6 / 17.3
240V:10 / 20
208V: 6142 / 12284
240V: 8189 / 16378
BTU High:
CFM High:
Watts High:
Weight lbs.:
Notice: Manufacturer's products features and specifications are subject to change without notice.
California Residents: warning WARNING- This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, please visit


Ask a Question
  • Does this product come with a warranty?

    Thank you for your question.  Yes, these units carry a one year, limited warranty from the manufacturer. 

    "Marley Engineered Products are warranted against defects in workmanship and materials for one year from date of purchase. This warranty does not apply to damage from accident,
    misuse, or alteration; nor where the connected voltage is more than 5% above the nameplate voltage; nor to equipment improperly installed or wired or maintained in violation of the product’s installation instructions. All claims for warranty work must be accompanied by proof of the date of purchase"

  • Can I wire it to a plug..or does it have to be hard wired

    A plug can be added, but it is recommended that any wiring be done by a professional electrical contractor.

  • Hardwire or plug?

    This heater is to be hardwired. No cord and plug included.