QMark Electric Heating and Ventilation: Smarter Comfort for Every Building
Sep 25
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For more than 50 years, QMark—a flagship brand of Marley Engineered Products—has been a trusted name in electric heating and ventilation. From offices and schools to warehouses, hospitals, and even hazardous industrial environments, QMark equipment is known for its durability, energy efficiency, and safety certifications that engineers and architects can count on.
All products are designed and built in a 500,000+ sq. ft. manufacturing facility in Bennettsville, South Carolina, with UL and ETL certifications and explosion-proof ratings available where required. Add in nationwide distribution and strong technical support, and QMark is more than just a manufacturer—it’s a full lifecycle partner for modern building projects.
Why QMark?
50+ years of proven performance in electric heating and ventilation.
Energy efficiency up to 100% with electric systems, supporting DOE standards and green building certifications.
Seamless integration with Building Management Systems (BMS) for smarter, automated control.
Durability and safety with heavy-gauge steel, aluminum fins, thermal cutouts, and hazardous-environment models.
Flexible installation options to fit architectural layouts—wall, ceiling, baseboard, radiant, or unit-mounted.
QMark Product Categories
QMark’s lineup covers nearly every application, from silent radiant heaters for classrooms to explosion-proof unit heaters for petrochemical plants.
Wall Heaters: Targeted Comfort Where You Need It
Wall heaters are the go-to for zoned heating—perfect for areas where central systems aren’t efficient. They deliver quick heat-up, compact design, and smart controls.
AWH Series (Architectural Heavy-Duty Wall Heater)
Wattage: 500–4,800 W | Voltage: 120–600 V
Heavy-duty steel/aluminum build with tamper-resistant thermostats.
BMS compatible, fan-delay for energy savings, thermal cutouts for safety.
Great for hospitals, commercial lobbies, or other high-traffic areas.
CWH3000 Series (Commercial Fan-Forced Heater)
Wattage: 3,000 W | Voltage: 120–277 V
Steel grille, fan-only mode for ventilation.
Ideal for offices, vestibules, and hallways.
SSHO SmartSeries® Commercial Heater
Wattage: Up to 4,000 W | Voltage: 120–277 V
LED touchscreen controls, programmable scheduling, BMS integration.
5-year warranty on finned elements.
Perfect for schools, restaurants, and other spaces needing IoT-enabled control.
Ceiling Heaters: Discreet, Overhead Comfort
For open layouts or spaces without wall real estate, QMark ceiling heaters provide uniform overhead heat without disrupting design flow.
CDF Series (Commercial Downflow Ceiling Heater)
Wattage: 2,500–5,000 W | Voltage: 208–277 V
Adjustable airflow patterns, quiet relays, BMS ready.
Works well in lobbies, hallways, and other open spaces.
EFF Series (Fan-Forced Ceiling Heater)
Wattage: 1,000–4,800 W | Voltage: 120–277 V
14-gauge steel grille, tamper-resistant screws.
A secure, efficient choice for public spaces like detention centers or classrooms.
Unit Heaters: Heavy-Duty Performance for Large Spaces
When it comes to warehouses, factories, or transit terminals, QMark’s unit heaters deliver big capacity with minimal maintenance.
MUH Series (Unit Heater)
Wattage: 2,200–50,000 W | Voltage: 120–600 V
Pull-through design, copper/aluminum fins, adjustable louvers.
SmartSeries Plus upgrade available for BMS integration.
CU900 Series (Custom Cabinet Unit Heater)
Wattage: 2,000–32,000 W | Voltage: 208–480 V
Sleek cabinet with flip-able design and disposable filters.
Great fit for schools, transportation hubs, and public spaces.
Hazardous Location Units (QWD & GUX Series)
Wattage: 2,000–47,000 W | Voltage: 120–600 V
Explosion-proof Class I/II certifications, corrosion-resistant coatings.
Designed for petrochemical plants, grain elevators, or any hazardous environment.
Baseboard & Radiant Solutions
For projects where noise reduction and air quality matter, QMark’s convection and radiant models deliver reliable heat without fans.
HBB Series – Hydronic BaseboardA trusted, time-tested option for efficient perimeter heating. The HBB Series delivers consistent comfort in a sleek, low-profile design.
In-Floor Convector – THX™ SeriesBuilt directly into the floor, the THX Series provides powerful heating without interrupting sightlines—perfect for areas with floor-to-ceiling glass or modern open designs.
FHP Series – Portable Electric Hydronic Heater A flexible, mobile solution that delivers hydronic comfort where it’s needed most. Ideal for supplemental and temporary heating applications.
Architectural Sill-Height Convectors – DBA & SHA SeriesLow-profile units that fit seamlessly beneath windows, combining strong performance with clean architectural integration.
Smart Controls, Ventilation & Integration
QMark doesn’t just supply heaters—it also delivers the controls and ventilation accessories to optimize them. Options like SmartSeries® programmable controls, CLIP-N-FIT® on-site wattage adjustments, and BMS compatibility make it easy to integrate QMark into modern building systems.
For large open areas, DOE-compliant ceiling fans and air-circulation products improve comfort while lowering energy use.
Resources for Professionals
Engineering Tools: BIM/Revit files, spec sheets, and CAD resources available online.
Catalogs & Manuals: Updated product catalogs and installation guides.
Warranty: Standard 1-year, up to 5 years on heating elements.
Support: Nationwide reps, plus direct tech support for custom solutions.
The Bottom Line
With a wide range of electric heaters, ventilation solutions, and smart controls, QMark makes it easier for architects and engineers to design spaces that are comfortable, efficient, and safe. Whether it’s a quiet baseboard heater for a healthcare facility or an explosion-proof unit for an industrial site, QMark delivers performance that lasts. Call VHF Sales to order QMark today!
