Key Takeaways
- Maximum Flexibility in Minimal Space: The Reznor EUHC Compact Electric Unit Heater delivers powerful heating (2–20kW) with industry-leading low clearance requirements, making it ideal for tight spaces where standard heaters won't fit.
- 360-Degree Directional Control: Unlike fixed-position heaters, the EUHC’s multi-position hanger and swivel bracket allow mounting at any angle—vertical, horizontal, or every 15° in between—directing heat exactly where you need it.
- Simple Installation, Year-Round Value: The EUHC offers multi-voltage options to match any facility, requires no venting or wall penetrations, and includes a fan-only mode for year-round air circulation and comfort.
Article Contents
We're excited to announce that Reznor EUHC Compact Electric Unit Heaters are now available to buy on HVACDirect.com!
If you’re in charge of a commercial facility, workshop, warehouse, or industrial space, you know that heating challenges come in all sizes. Tight ceiling heights, narrow aisles, equipment congestion, and limited mounting clearances can make traditional unit heaters impractical. Frequently, heating solutions that can be installed in ceilings or low-clearance areas to maximize usable space are required. Reznor EUHC Compact Electric Heaters pack serious heating power into a space-saving design that installs where larger heaters simply won’t fit!
To help you appreciate just how the EUHC works, we’ve created this buying guide. We cover everything from pros and cons to how it compares against other heating options. With its small footprint and flexible mounting options, the EUHC is one of the most versatile electric heating solutions for challenging environments.
What Are Reznor EUHC Compact Electric Unit Heaters?
The Reznor EUHC is a new version of Reznor’s proven EUH Electric Unit Heater line designed to provide equivalent heating performance with a much smaller footprint. Available in several sizes and voltages to fit the needs of any space.
What makes these heaters a great choice for use in confined spaces is the powerful performance and installation versatility. The multi-position hanger and swivel bracket allow you to direct heat exactly where it's needed, something that traditional wall-mounted or fixed-position heaters can’t do. The EUHC can also be mounted on ceilings to maximize usable space. With an industry leading low clearance requirement the EUHC fits in spaces where standard unit heaters won’t, making it ideal for retrofits, corridors, narrow aisles, and areas with dense ceiling utilities.
How Do Reznor EUHC Unit Heaters Work
The EUHC uses electric resistive heating with a low-static axial fan. The enclosed stainless steel, sheathed and finned heating elements convert electricity to heat up and make this unit 100% efficient (unlike gas units that lose heat volatily to exhaust). A fan motor isolated against vibration and noise provides a moving stream of heated air through the unit warming up the targeted space.
Reznor EUHC Unit Heaters Pros and Cons
Pros of Reznor EUHC Unit Heaters
- Fits in tight spots: Works in cramped spaces where regular heaters are too big, and doesn't eat up your floor or storage space
- Point heat wherever you want: Comes with a mounting bracket that swivels and/or tilts so you can direct air in whatever direction you need it to flow
- Works with your building's power: Eight sizes with seven voltage/phase combinations to match electrical specs of any facility
- Field-adjustable voltage: Available in different electrical configurations so you don't need to rewire your facility
- Quiet operation: Fan motor is vibration and noise isolated and specially designed to run quietly
- Easy to switch to 3-phase power: Some models can be adjusted to run on 3-phase electricity, which uses less power and costs less to operate
- Modern, durable design: Painted galvanized-steel cabinet with two-tone black and white glossy, scratch-resistant finish withstands tough environments
- Minimal maintenance: Corrosion-resistant, stainless-steel sheathed heating elements resist thermal shock and vibration, so it will last a long time
- No extra parts for redirecting airflow: Traditional unit heaters require the purchase of extra parts and accessories to redirect airflow, while the EUHC does not due to its multi-position hanger and swivel bracket that allows mounting at any angle
- 5-year warranty: Comprehensive electrical and mechanical parts coverage
- Less upfront cost: Compared to gas heaters, electric heaters typically require less upfront costs because they don’t require installation of gas lines and exhaust vents
- Efficient and flexible heating solutions: Of all the options the EUHC is one of the best electric heating solutions you can choose for a variety of applications, from industrial, to hazardous locations, etc.
Cons of Reznor EUHC Unit Heaters
- Professional installation recommended: While simpler to install than gas heaters, professional installation is still recommended
- Reduced airflow: Due to the smaller size of the unit, the EUHC doesn’t move as many CFM’s and the distance of its air throw is also sacrificed compared to the EUH
Reznor EUHC Unit Heaters Features and Specifications
Compact, Durable Construction for Tight Spaces
An adjustable bracket assembly allows the heater to be located wherever heat is needed, and the EUHC can be mounted on ceilings for space-saving in low-clearance areas. Suitable for shops, garages and industrial plants, the EUHC’s durable, galvanized-steel cabinet resists corrosion and the OSHA-compliant fan guard protects workers without restricting air flow. Available in these sizes with minimum clearances:
- EUHC-3, 5: 2" top, 7" back, 36" front, 4" sides
- EUHC-7, 10: 2" top, 7" back, 36" front, 6" sides
- EUHC-15, 20: 6" top, 8" back, 36" front, 9" sides
Safe, Low-Maintenance Electric Operation
Safety certifications and features combined with its electric, non-gas power source protect your workers and facility:
- ETL certified: UL Standard 2021 and CSA C22.2 #46 for use in the US and Canada
- High-temperature limit control: Automatic reset shuts down if temperatures exceed safe limits
- Thermal overload protection: Automatic reset on fan motor prevents damage
- External terminal strip: Plug-n-play 24V wiring allows easy connection to thermostats
- No combustion and no ventilation: Zero carbon monoxide risks and no ventilation requirements such as piping, flues, valves, or traps
Other Features to Consider
- Multi-unit controls: Control multiple heaters with one thermostat for zone heating
- Two mounting options: Direct wall/ceiling mount with provided hanger, or two-rod mounting for high-ceiling applications
How to Choose the Right Reznor EUHC Model for Your Space
Selecting the proper size Reznor EUHC Compact Electric Unit Heater is dependent on the size layout and power requirements of your own facility. Refer to the sizing chart below to compare BTU output, kilowatt range, and airflow (CFM) to the needs of your facility. Smaller models like the EUHC-3 and EUHC-5 are adequate for most workshops/garages and compact enough to heat small commercial spaces, while larger capacity units like the EUHC-15 and EUHC-20 are intended for larger warehouses and industrial use. Be certain to check your electrical voltage, clearance and mounting configuration before settling on your model to ensure proper fit, safety and optimum heating efficiency.
| REZNOR EUHC PRODUCT COMPARISON FOR SIZING | ||||
|---|---|---|---|---|
| Model | kW Range | BTU Output | CFM | Heat Rise |
| EUHC-3 | 2.3–3 kW | 7,840–10,236 | 340 | 17°F–28°F |
| EUHC-5 | 3.8–5 | 12,810–17,060 | 340 | 33°F–43°F |
| EUHC-7.5 | 7.5 | 25,590 | 640 | 35°F |
| EUHC-10 | 10 | 34,120 | 640 | 48°F |
| EUHC-15 | 11.3–15 | 38,556–51,180 | 1,160 | 41°F |
| EUHC-20 | 15–20 | 51,180–68,240 | 1,160 | 54°F |
Optimal Mounting Angles and Directional Airflow
EUHC's greatest selling point is installation flexibility. The unit offers four primary mounting positions: vertical mounting directs heat straight down for maximum floor-level warmth, horizontal mounting throws heat across longer distances in narrow spaces, angled mounting at every 15° between vertical and horizontal accommodates custom applications, and swivel adjustment allows fine-tuning direction after installation without remounting.
When positioning your EUHC heater, direct the discharge toward work areas and away from doors and overhead obstacles. Angle the unit slightly downward to prevent heat stratification at the ceiling level. In narrow aisles, mount horizontally to throw heat along the length of the space. For areas with lighting or signage, use angled mounting to work around obstructions.
Understanding Single-Stage Operation and Control Options
All EUHC models use single-stage operation, heating elements are either fully on or off. While the heaters themselves don't have variable output, you can pair them with different thermostat types to optimize temperature control.
Thermostat Options:
- Single-stage: Waits until temperature drops below setpoint, then turns heater on—simple and economical
- Two-stage: Monitors how fast temperature is changing and turns heater on earlier to prevent temperature from dropping too far below setpoint
How the Reznor EUHC Unit Heaters Compare to Other Electric Heating Systems
Purpose-Built for Flexible Installation in Space-Constrained Areas
vs. Larger Unit Heaters: Larger models like the Reznor EUH offer slightly higher CFM and air throw for heating expansive areas, while the EUHC provides comparable performance in a more compact design. With its smaller footprint and flexible mounting options, the EUHC delivers the same reliable comfort where space or clearance is limited.
vs. Wall-Mounted Heaters: Ordinary wall-mounted heaters do not offer the same mounting flexibility as the Reznor EUHC unit heater. They’re fixed in place, occupy more wall space, and probably throw heat in the wrong places. The EUHC’s 360° swivel bracket and multi-position mounting throw heat around obstacles and into the back corners of the room.
vs. Portable Heaters: Portable electric heaters create trip hazards and use valuable floor space. They have a much lower output and heating capacity. The EUHC can be suspended from the ceiling and out of the way! They’re much stronger and more robust heating systems than those mentioned previously and are built to last.
Better Airflow and Heat Distribution Than Traditional Heaters
The EUHC's forced-air design with adjustable positioning provides directional control impossible with fixed-position heaters. With CFM ratings from 340 to 1,160 and heat rise up to 54°F, this forced-air approach ensures warmth reaches occupied zones quickly and evenly.
Available Compact Design Unit Heaters at HVACDirect.com
HVACDirect.com sells 6 different sizes of the Reznor EUHC model with varying heating capacities and voltages:
Reznor EUHC-3 Models:
- Reznor EUHC-3 Compact Electric Unit Heater - 3kW / 10,236 BTU, 208V / 1 - 3 Phase Convertible
- Reznor EUHC-3 Compact Electric Unit Heater - 3kW / 10,236 BTU, 208V - 240V / 1 - 3 Phase Convertible
- Reznor EUHC-3 Compact Electric Unit Heater - 3kW / 10,236 BTU, 277V
- Reznor EUHC-3 Compact Electric Unit Heater - 3kW / 10,236 BTU, 480V / 3 Phase
Reznor EUHC-5 Models:
- Reznor EUHC-5 Compact Electric Unit Heater - 5kW / 17,060 BTU, 208V / 1 - 3 Phase Convertible
- Reznor EUHC-5 Compact Electric Unit Heater - 5kW / 17,060 BTU, 208V - 240V / 1 - 3 Phase Convertible
- Reznor EUHC-5 Compact Electric Unit Heater - 5kW / 17,060 BTU, 277V
- Reznor EUHC-5 Compact Electric Unit Heater - 5kW / 17,060 BTU, 480V / 3 Phase
Reznor EUHC-7.5 Models:
- Reznor EUHC-7 Compact Electric Unit Heater - 7.5kW / 25,590 BTU, 208V / 1 - 3 Phase Convertible
- Reznor EUHC-7 Compact Electric Unit Heater - 7.5kW / 25,590 BTU, 208V - 240V / 1 - 3 Phase Convertible
- Reznor EUHC-7 Compact Electric Unit Heater - 7.5kW / 25,590 BTU, 277V
- Reznor EUHC-7 Compact Electric Unit Heater - 7.5kW / 25,590 BTU, 480V / 3 Phase
Reznor EUHC-10 Models:
- Reznor EUHC-10 Compact Electric Unit Heater - 10kW / 34,120 BTU, 208V / 1 - 3 Phase Convertible
- Reznor EUHC-10 Compact Electric Unit Heater - 10kW / 34,120 BTU, 208V - 240V / 1 - 3 Phase Convertible
- Reznor EUHC-10 Compact Electric Unit Heater - 10kW / 34,120 BTU, 277V
- Reznor EUHC-10 Compact Electric Unit Heater - 10kW / 34,120 BTU, 480V / 3 Phase
Reznor EUHC-15 Models:
- Reznor EUHC-15 Compact Electric Unit Heater - 15kW / 51,180 BTU, 208V - 240V / 3 Phase
- Reznor EUHC-15 Compact Electric Unit Heater - 15kW / 51,180 BTU, 480V / 3 Phase
Reznor EUHC-20 Models:
- Reznor EUHC-20 Compact Electric Unit Heater - 20kW / 68,240 BTU, 208V - 240V / 3 Phase
- Reznor EUHC-20 Compact Electric Unit Heater - 20kW / 68,240 BTU, 480V / 3 Phase
Reznor EUHC Unit Heaters Frequently Asked Questions
EUHC stands for Electric Unit Heater Compact, indicating this model’s space-saving design based on Reznor’s long-proven EUH unit heater line, but sized for installations where space or location flexibility is needed.
Yes. Since they convert the electricity they use directly to heat without combustion losses, flue losses from a stack, or wasted byproduct, EUHC units are 100% efficient. Their selective heating principle, heating only the areas you need them to, saves energy for you because you are not heating the entire space, just the occupied areas. This energy-efficient practice is further enhanced when the heater is controlled by a programmable thermostat.
Yes. The EUHC features a multi-position hanger and can be mounted vertically or horizontally, or at any angle between the two in 15° increments. A swivel bracket permits even further control, with complex angles directing the heat around an obstacle and into the desired work zone. This flexibility is one of the EUHC’s defining advantages over fixed-position heaters.
Six sizes cover a wide range of applications:
- EUHC-3: 2.3–3 kW (7,840–10,236 BTU)
- EUHC-5: 3.8–5 kW (12,810–17,060 BTU)
- EUHC-7.5: 7.5–10 kW (25,590–34,120 BTU)
- EUHC-10: 10 kW (34,120 BTU)
- EUHC-15: 11.3–15 kW (38,556–51,180 BTU)
- EUHC-20: 15–20 kW (51,180–68,240 BTU)
Multiple voltage and phase options are available for each size, with some models offering field-adjustable voltage conversion.
HVACDirect.com offers the EUHC line at wholesale prices with expert support. Their trained team helps specify the right model, voltage, and control options for your application.
Shop Reznor EUHC Unit Heaters at HVACDirect.com
The Reznor EUHC represents the next generation of compact electric heating. It combines powerful performance, installation flexibility, and a compact design in a package that works where traditional heaters can’t. As one of the most advanced heating solutions for both commercial and industrial needs, the EUHC is ideal whether you’re heating a workshop, retrofitting a commercial bay, warming a garage, or addressing spot heating needs in an industrial facility. The EUHC delivers reliable comfort with the versatility to adapt to your space.
HVACDirect.com's trained representatives understand commercial and industrial heating challenges and can help you choose between models, plan installation, and select the right voltage configuration for your facility.
Don't let space constraints limit your heating options. Contact HVACDirect.com today to discover how Reznor EUHC compact electric unit heaters can transform your facility's comfort and efficiency.
