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Applications: ideal for high and large space (H: 4-30m) and uses PTC electric heating with max 16m supply air height. Heating capacity can be customized.
Model: AirTS-ED-I, AirTS-ED-II
Function: heating
Hot source: PTC
Control mode: wireless control, variable frequency, auto monitoring
Quality Assurance
Stable and Durable.
After-sales Service
24H Online.
The Side-mounted or overhead Recirculated Air Electric Heating Unit is a high-performance, electrically driven heating solution engineered for high-ceiling / large-volume spaces. Designed for industrial workshops, logistics warehouses, aircraft hangars and other high/mass space environments, this electric recirculation air heater combines efficient PTC electric heating elements with high-static-pressure axial fans to deliver warm air downward into the working zone—overcoming the “warm air at ceiling, cold air at floor” challenge typical of large spaces. With supply-air throw distances up to ~16 m and installation heights from 4 m up to around 30 m, it offers a flexible industrial electric air heater for high-bay spaces.
● Electric heating option for large-space HVAC: Unlike gas or hot water systems, this recirculated air electric heater uses PTC-type electric heating elements—ideal for facilities where hot-water or steam is unavailable but a clean, efficient heating system is required.
● Effective recirculation of high-bay air: The unit draws warm air from the upper region of the facility, re-pressurises it via a high static pressure axial fan, then distributes it downward through converging nozzles and louvers for even temperature in the occupied zone.
● Optimised for large volume spaces (4-30 m high): Suitable for large-space warehouses, manufacturing plants, hangars, exhibition halls where the volume is significant and conventional electric heaters cannot provide sufficient throw or uniformity.
● Energy-efficient electric heating for recirculated air systems: By recirculating air rather than heating entirely fresh outside air, this system reduces energy input and heat losses—making it a smart choice for energy-saving electric recirculated air heating solutions.
● Flexible installation & control: Variable frequency fan drive, wireless or linked control, automatic monitoring of data and safety features like fall-protection alarms, filter-self-cleaning—makes it part of smart industrial HVAC system.
● Improved comfort and productivity: Even, consistent warmth in the working zone means fewer cold spots, no large temperature gradients, better employee comfort and safer operations—in turn improving productivity.
High-bay logistics warehouses, distribution centres with crane runways and mezzanine levels.
Manufacturing plants, assembly lines, CNC workshops, where overhead cranes or gantries occupy ceiling space and require heating at floor level.
Aircraft hangars, vehicle maintenance bays, indoor sports halls, large showrooms—any large-volume indoor space requiring uniform warm-air delivery.
Electric heating retrofit projects in facilities where hot-water or steam systems are unavailable, where a plug-in/ electrically driven recirculated air electric heater for industrial spaces is desirable.
Projects focusing on industrial HVAC electric heating systems for large volume space, with minimal installation complexity of fuel supply or boiler systems.
| Feature | Benefit |
| PTC electric heating elements | Clean, rapid heat without combustion. |
| High static-pressure axial fan & converging nozzle | Long air-throw (up to ~16 m) and even distribution. |
| Recirculated air strategy | Reduces heat loss, improves energy efficiency, lowers running cost. |
| Smart controls and self-monitoring | Automated operation, reduced manual oversight, lower maintenance. |
| Wide installation height (4 m-30 m) | Versatile for varied industrial spaces. |
| Uniform thermal comfort in large spaces | Better worker comfort, reduced cold spots and stratification. |
Recirculated Air Electric Heating Unit Working Principle
When PTC heater starts working, the efficient heat exchanger in the equipment is used to achieve rapid heating of the air.
The large wind pressure axial fan installed on the top is used to forcedly press the hot air down. Then the air is subject to pressure boost twice through the silencer sponge and the lower trapezoidal convergence, swirls out from the nozzle through the guide vane and is distributed throughout the space from top to down.
Recirculated Air Electric Heating Unit Features
By adjusting wind speed and air outlet angle, it achieves comfortable heating environment
Supply air angle stepless regulation
Utilize axial fan to efficiently recover heat from the top, reducing heat loss from the roof, achieving energy-saving effects
High: continuously recover heat from the top space to send the heat to the working area at the bottom
Large: the devices in the space are arranged uniformly with even heat distribution
Space: decrease the temp of roof and surrounding walls, decrease the temp difference with the outside, and reduce heat loss
Long air supply distance, high hot air volume
Function: heating
Recirculated Air Electric Heating Unit Functions
Fall prevention warning monitoring
Working data collection and analysis
Electric Heating
Wireless intelligent control
Filter net self-cleaning
Wireless control
Support full linkage control
Light breeze air supply
Technical Comparison
AirTS top heating unit
High and large space air conditioner lifted on the roof
It achieves heating air from the air exchanger in the equipment
It distributes the hot air by means of efficient air distributor, which eliminate the undesirable indoor temp layers
Comfortable heating environment without wind feeling sense
Bottom heating unit
In high large space with great depth, using radiator can allow natural air convection as hot air rises
It can only radiate into small area with the range less than 5m. The heat rising to the roof will be dissipated and the temp cannot be achieved effectively in the middle area.
Radiator heating requires high requirements for supply water temp.
AirTS units temp field
Our heating units forcedly and quickly send the hot air down, make the temp in the working area rise rapidly.
Radiator heating temp field
It can be seen from the radiator heating temp field image that the heat is mainly gathered on the roof and the temp is low in the lower working area.
Specification
| Recirculated Air Electric Heating Unit | |||
| Model | AirTS-ED-I | AirTS-ED-II | |
| Rotating speed of fan | r/min | 0～900 | 0～860 |
| Standard circulating air volume | m³/h | 0～6700 | 0～9700 |
| Voltage | V | 380±5% | 380±5% |
| Electric power | kW | 0～0.85 | 0～1.80 |
| Current | A | 0～1.65 | 0~3.60 |
| Suitable installation height | m | 4~10 | 4~17 |
| PTC heater control mode | Linkage | Linkage | |
| Control mode | VAV stepless regulation | VAV stepless regulation | |
| Noise | dB | <60 | <60 |
| Dimension | |||
| Model | AirTS-ED-I | AirTS-ED-II | |
| A | mm | 900 | 1100 |
| B | mm | 1200 | 1505 |
| C | mm | 735 | 920 |
| E | mm | 100 | 100 |
| F | mm | 150 | 150 |
| G | mm | 480 | 568 |
| H | mm | 765 | 935 |
| J | mm | 170 | 180 |
| K | mm | 400 | 400 |
| Weight | kg | 120 | 170 |
Why Partner with AirTS for Electric Recirculated Air Heating Solutions?
Since 2005, AirTS has specialized in large-space HVAC solutions—especially for high-bay, long-span industrial buildings. Our expertise spans design, manufacture, installation and service. With an electric recirculated air heating unit from AirTS, you gain not just a heater, but a full large‐space industrial electric air heater system supported by 24-hour technical service and global logistics capability.
A Recirculated Air Electric Heating Unit is an industrial heating device that uses electric heating elements instead of hot water or steam. It draws existing indoor air, reheats it, and circulates it evenly throughout the space — reducing temperature differences and energy loss in large or high-ceiling buildings.
Unlike water-based or steam-based systems, the electric recirculated air heating unit offers a plug-and-play installation with no need for boilers or pipelines. It provides instant heat, easier maintenance, and is ideal for buildings without access to a central heating source.
AirTS uses PTC (Positive Temperature Coefficient) electric heating elements, known for their high efficiency, fast heat response, and self-regulating temperature control. This ensures reliable performance and longer service life compared to conventional resistance heaters.
Yes. The system is specially engineered for large-volume buildings between 4 m and 30 m high, such as:
● Industrial workshops
● Warehouses and logistics centers
● Aircraft hangars
● Assembly halls and maintenance facilities
Its powerful fan and optimized air outlet ensure that warm air reaches the working zone quickly and evenly.
Instead of constantly heating cold outside air, the unit recirculates and reheats existing indoor air, which drastically reduces heat loss and power consumption. This design makes it a high-efficiency electric heating system for large industrial spaces.
Yes. AirTS electric heaters can integrate with smart HVAC control systems and IoT-based building management. Options include:
● Wireless remote control
● Variable Frequency Drive (VFD) for airflow adjustment
● Temperature and humidity sensors
● Centralized energy monitoring
Despite the strong air volume and pressure, the electric recirculated air heating unit operates at a low noise level, thanks to its balanced fan design, aerodynamic louvers, and precision manufacturing. It’s suitable for continuous operation in production or warehouse environments.
Absolutely. Installation requires only an electrical power connection — no boiler, no piping, no additional heating source. Maintenance is minimal due to the unit’s modular design, self-cleaning air filters, and corrosion-resistant casing.
Each AirTS electric heating unit is equipped with:
● Overheat protection
● Automatic power shut-off in abnormal conditions
● Anti-fall alarm for suspended models
● Fan delay control to prevent overheating after shutdown
These ensure safe and reliable long-term operation in any industrial environment.
You can simply click “Inquire Now” and send us your project details — including building dimensions, required temperature range, and power supply.
Our engineers will recommend the most suitable electric air recirculation heating unit model and provide a customized quotation within 24 hours.
Still Have Questions About Electric Recirculated Air Heating Systems? Contact our technical experts at AirTS for a free consultation and tailored design for your project.
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