Fogger sizing by cubic feet
Size a NeutraFog electric thermal dry-fog IPM system from sealed room volume, not floor square footage. Measure length times width times height in feet. That cubic-foot number is the volume one cycle has to fill. Match it to the system that covers that volume in one run, typically under three minutes.
How to measure a room or greenhouse bay
Walk the sealed space you will treat. Measure wall to wall and floor to the sealed ceiling or gutter height, not the peak of an open roof vent. Do not count hallways or mechanical rooms unless they share an open doorway with the grow. If two rooms share an open door, add both volumes and treat them as one cycle. Close doors that should stay closed. One sealed room per cycle is the working rule.
Example: a 40 ft by 25 ft indoor room with a 12 ft sealed ceiling is 12000 cubic feet. That sits above the Nano range and inside Pro-500. A 100 ft by 40 ft greenhouse bay at 16 ft to the gutter is 64000 cubic feet, still Pro-500. A 200 ft by 50 ft bay at 18 ft is 180000 cubic feet, which needs Pro-1500.
NeutraFog coverage by cubic feet
- Nano: up to 10000 cubic feet in about 60 seconds
- Pro-500: up to 105000 cubic feet in about 30 seconds
- NeutraBoost: up to 100000 cubic feet in about 60 seconds
- Pro-1500: up to 300000 cubic feet in about 70 seconds
- Pro-4000: up to 800000 cubic feet in about 180 seconds
These are sealed-volume ratings for electric thermal dry fog at about 1 micron, run remote. They are not pulse-jet wet fog ratings. Product pages: Nano, Pro-500, NeutraBoost, Pro-1500, Pro-4000. Full lineup: Our Systems.
Indoor rooms vs greenhouse bays
Indoor rooms usually have a hard ceiling, so height is straightforward. Greenhouse bays often have a gutter height and a higher ridge. Use the sealed height you actually close during treatment. Side curtains, ridge vents, and fans that stay open leak fog and waste cycle time. Size for the volume you can actually seal.
If you run many small rooms, size to the largest sealed room, not the sum of every room in the building. You treat rooms one at a time. If you run one large connected greenhouse, size to that connected volume.
Why square footage is the wrong number
A 2000 square foot room at 8 ft is 16000 cubic feet. The same floor plate at 20 ft is 40000 cubic feet. Fog fills air, not floor. Using only square feet under-sizes tall houses and over-sizes short ones.
Retired T-Series names
T-250 and T-500 were earlier names for what is now Pro-500 (up to 105000 cubic feet in about 30 seconds). If an old quote or listing says T-250 or T-500, use Pro-500 coverage. Comparison: electric thermal dry fog vs pulse-jet and labor vs fog IPM.
Sizing FAQ
Do I add hallway volume?
Only if the hallway stays open to the room during the cycle. If the door is closed, leave it out.
What if my volume sits between two systems?
Choose the system whose rating is at or above the sealed volume. Do not plan on a smaller unit running extra cycles as a substitute for coverage.
Can I treat two rooms at once?
Only if they are one air mass (open door or shared headhouse). Otherwise run two cycles.
