✓ No Ductwork Required · Install in Days, Not Months
Ambient air cleaners
2,000–10,000 CFM recirculating filtration · MERV 13–16 + optional HEPA
Designed for OSHA 29 CFR 1910.1000 limits · ceiling or floor mount
DustHog and SmogHog equipment
DustHog ambient units we supply
If the dust in your building is already airborne by the time anyone notices it, ambient collection is what turns the room over. These are the units we size and supply for that job.
DustHog SCA Ceiling Mounted Ambient Collector
Three builds to 2,500 CFM, hung overhead so the floor stays clear.
See DustHog SCA specsDustHog D Series DA, DB and DBM
Thirteen builds of ambient collection for turning over the whole room.
See DustHog D specsDustHog MCB Cross Ventilation Collector
Three models at 4,000, 9,500 and 11,500 CFM. DustHog rates the MCB for non combustible dry dust.
See DustHog MCB specsDustHog PNP Plug-N-Play Collector
Arrives wired and ready to run. DustHog rates the PNP for non combustible dry dust.
See DustHog PNP specsDustHog Dust Collectors
The full DustHog line, from portable benches to 102,000 CFM modular cartridge.
See the DustHog lineNot sure which of these fits your floor? Tell us what your process puts into the air and we will size it against your actual conditions.
Get a free system reviewWhen source capture isn’t practical, ambient air cleaners are your fastest, most cost-effective way to clean a large open space. They continuously recirculate and scrub your facility’s air, pulling welding fume, grinding dust, oil mist, and airborne particles, without expensive ductwork or losing your heated and cooled air.
You mount these units to the ceiling or set them on the floor: plug in, turn on, and start cleaning. No roof penetrations, no building permits in most cases, and no production disruption during installation. Most facilities are running within a day or two.
Installation is handled by an independent ICAP Certified crew or your own contractor. For a full cost breakdown, see the 2026 cost guide.
See every Air King unit, filter and part on our Air King Filtration page.
Advantages
Why facilities choose ambient air cleaners
2,000–10,000+ CFM
Scalable for any size facility. A single unit covers a small shop; multiple units gang together for large floors, each running independently for zone control.
MERV 13–16 + optional HEPA
Multi-stage filtration captures welding fume, grinding dust, oil mist, and fine particulate. An optional HEPA stage hits 99.97% efficiency at 0.3 microns for your toughest applications.
Ceiling or floor mount
Ceiling-hung units keep your floor space clear for production. Floor-mount units work when ceiling height or structure won’t support overhead installation. Same performance either way.
No ductwork needed
Install in days, not months. No roof penetrations, no ductwork runs, no building permits in most cases. Plug in, turn on, and start cleaning air immediately.
Keep your conditioned air
Full recirculation means you’re not exhausting heated or cooled air outdoors. You save real money on HVAC, especially in summer, when replacing conditioned air gets expensive.
Energy efficient
VFD controls and ECM motors cut energy use 30–50% versus makeup-air systems. Run full speed during production, dial back during breaks, automatic or manual.
Applications
Where ambient air cleaners work best
Welding & fabrication shops
Clear welding fume and grinding dust from open floors where source capture arms can’t reach every station, ideal for rotating weld positions or large assemblies.
Welding & metal fabrication →Machining & CNC
Control oil mist and fine metallic particles from CNC machines, lathes, and mills. Keeps the shop clean and protects your team from inhalation hazards.
Machining & CNC →Automotive & assembly
General air cleaning for production floors, assembly lines, and service bays. Works alongside welding booths and downdraft tables for layered protection.
Automotive →Food processing
Maintain air cleanliness in zones handling powders, spices, and bulk ingredients. Complements central dust collection where ambient particulate drifts.
Food & supplement →Warehouses & logistics
Reduce dust in shipping, receiving, and storage areas. Ceiling-mount units stay clear of forklifts and material handling equipment.
Vocational & trade schools
Air cleaning designed for OSHA limits in training shops where students weld, grind, and cut. Simple operation and low maintenance make them a great fit for classrooms.
Vocational & trade school →Size your space
How many ambient units does your space need?
Enter the size of the area you want cleared and how heavy your smoke is. You get the airflow your space needs and how many of each unit it takes to deliver it.
Units that deliver it
Unit count is your required airflow divided by the unit’s airflow, rounded up. Price is the unit’s starting price times the count. Freight is calculated at checkout.
Not sure your space fits the numbers? We size it with you.
Get a free system reviewSystem Integration
Ambient vs. source capture: when to use each
Use ambient air cleaners when:
→ Your workers move between stations or weld large assemblies
→ Source capture arms can’t reach every dust source
→ You need a supplemental layer over existing capture
→ Adding ductwork isn’t practical or cost-effective
→ You want to keep your conditioned air (no outdoor exhaust)
→ You need a fast install: days, not weeks
Use source capture when:
→ Workers stay at fixed stations with consistent dust sources
→ Fume arms or downdraft tables can reach the point of generation
→ Concentrations require capture at the source for PEL compliance
→ Combustible dust requires explosion protection
→ High-volume work needs central baghouse or cartridge collection
→ Not sure which type? Compare all industrial dust collectors
Many facilities use both. Ambient units clean the general air while source capture handles the highest-concentration zones. We help you figure out the right combination during your free system review.
Maintenance
Filters & ongoing maintenance
Ambient air cleaners use multi-stage filtration, typically a pre-filter for large particles, a primary MERV 13–16 filter for fine particulate, and an optional HEPA final stage for 99.97% efficiency. Filter changes are straightforward and don’t require a production shutdown.
Your replacement filters are available for all major ambient air cleaner brands. Want a preventive maintenance program? Your filters and parts come from us, and scheduled filter changes and performance checks are contracted directly with an independent ICAP Certified crew, so your units keep running efficiently year-round.
Honest Guidance
When an ambient air cleaner is not the right choice
Ambient units are genuinely useful across a lot of facilities, but they’re a supplemental tool, not a substitute for source capture. Here’s where they fall short, and what to use instead.
High-concentration dust sources
If your workers generate heavy welding fume or grinding dust at fixed stations, ambient cleaners alone won’t meet OSHA PELs. The air recirculates, it doesn’t evacuate contaminants. Fixed stations need source capture fume arms or downdraft tables at the point of generation.
Combustible dust applications
Ambient cleaners are not approved for combustible dust under NFPA 660. If you generate aluminum, titanium, magnesium, or other reactive metal dust, you need a purpose-built system: a wet collector or a protected dry collector. An ambient unit isn’t built for that duty.
Very high ceilings without downdraft
Above 30–35 feet, contaminants stratify in the upper air and don’t recirculate well through ground or mid-level units. Without a downdraft or cross-flow design, ambient cleaning becomes inefficient and your breathing zone can stay contaminated even with units running.
Gas-phase or chemical contaminants
MERV and HEPA filters capture particles, not gases, vapors, or chemical fumes. If you generate solvent vapors or VOCs, particulate filtration alone won’t address it. You’d need activated carbon or a separate ventilation approach.
Standalone NFPA 660 compliance
Ambient cleaners are designed for OSHA general air-quality limits (29 CFR 1910.1000) but are not a path to NFPA 660 compliance for combustible dust. If you need a DHA and custom-designed collection, ambient units play a supporting role at best, not the primary system.
Not sure what you need?
If you’re unclear whether ambient filtration is enough (or whether you need source capture, a central collector, or a mix), a free system review gives you a clear answer before you spend anything. Most facilities do best with a layered approach, and we’ll tell you exactly what that looks like.
Keep Reading
Related resources
Ready for cleaner, safer air?
Book your free assessment. You’ll get an evaluation of your facility, a recommendation on the right ambient units (or a mix of ambient and source capture), and a fixed-price proposal.
Serving manufacturing facilities nationwide.