In large commercial and industrial spaces, winter heating can feel like an uphill battle. Warm air naturally rises to the ceiling, creating a toasty upper layer while workers on the floor shiver in cold pockets. This thermal stratification doesn’t just compromise comfort—it drives energy costs through the roof as systems overwork to compensate. Air Rotation Units (ARUs) from Althoff Industries, Inc. solve the problem by gently recirculating air from top to bottom, delivering even temperatures, lower bills, and a more productive environment.
Understanding Thermal Stratification
Picture a warehouse or manufacturing plant: heat pumps out of unit heaters or rooftop systems, only to pool 20–30 feet overhead. The temperature difference between floor and ceiling can exceed 20°F. Employees bundle up, space heaters sprout under desks, and thermostats get cranked higher—wasting fuel on air that never reaches the occupied zone. Traditional destratification fans help, but they often create drafts or noise. ARUs take a smarter approach.
How Air Rotation Units Work
ARUs are powerful, low-velocity circulation systems designed specifically for high-bay spaces. Mounted at ceiling level, they draw warm air down through large, quiet fans and distribute it evenly across the floor via adjustable louvers. The process is continuous and gentle—no blasts, no chills. Advanced controls modulate fan speed based on real-time temperature sensors, maintaining a uniform 2–3°F variance from floor to ceiling.
Key components include:
- High-efficiency EC motors for quiet, energy-smart operation
- Corrosion-resistant housings for durability in tough environments
- Optional integration with BMS for seamless automation
The result? Heat that was literally going to waste now stays where it’s needed most.
Energy Savings That Add Up Fast
Recapturing stratified heat can cut heating costs by 20–30%. For a 50,000 sq ft facility, that translates to thousands of dollars annually. Because ARUs eliminate hot spots, rooftop units or boilers cycle less frequently, reducing wear and extending equipment life. Many utilities offer rebates for destratification upgrades, further improving ROI.
Comfort for Every Corner
Uniform temperatures mean:
- Fewer complaints from staff near loading docks or exterior walls
- Consistent conditions for temperature-sensitive processes or inventory
- Improved air quality as circulation reduces stagnant zones
Workers stay focused and productive, while visitors experience a professional, welcoming space.
Easy Integration & Low Maintenance
ARUs install quickly alongside existing HVAC systems—no major ductwork required. Annual filter changes and motor checks keep them running smoothly. Althoff Industries, Inc. handles everything from load calculations and layout design to commissioning and ongoing service.
Real-World Impact
A regional distribution center retrofitted with ARUs saw a 27% drop in natural gas usage over one winter. Employee comfort surveys improved dramatically, and the system paid for itself in under two years through energy savings alone. Similar results are common in gyms, auto service centers, hangars, and big-box retail.
When to Consider Air Rotation
If your facility experiences:
- Ceiling temperatures 15°F+ above the floor
- High ceilings (20 ft or taller)
- Frequent thermostat adjustments
- Supplemental electric heaters in use
…it’s time to explore ARUs. A site assessment reveals exact savings potential.
Take Control of Your Environment
Don’t let heat rise and money fly out the roof. Air Rotation Units deliver proven efficiency, comfort, and simplicity for large spaces year-round.
Contact Althoff Industries, Inc. today for a free facility evaluation. Challenges accepted!