Fans for Construction Sites, Confined Spaces and Restoration
Construction, maintenance and restoration crews need air where there is no fixed ventilation: fresh air into a tank or manhole, fumes out of a work area, or dry air across a wet floor after water damage. These fans must be portable, tough and quick to set up.
This section collects LONGWELL’s guides for portable and temporary airflow on site.
Applications in this section
Portable and confined-space ventilationPortable axial fans with flexible duct for manholes, tanks, ship holds and sites.
Air movers and floor dryersCentrifugal air movers for water damage restoration and cleaning.
Related guides
Crawl spaces and basementsVentilation against damp and stale air below the house.
Sub-slab radon mitigationFans for soil-gas depressurisation systems.
Blower-door airtightness testingFans used to measure building air leakage.
Choosing a site fan
Supply or extract?
Blowing fresh air into a confined space keeps the worker’s area supplied. Extracting removes fumes or dust at the source. Many crews carry fans that can do both, with duct on either side.
Duct length and bends
Every metre of flexible duct and every bend reduces the airflow delivered. Select the fan for the duct you will actually use.
Hazardous atmospheres
Where flammable gas, vapour or dust may be present, the fan must be suitable for that hazardous area. Confirm the protection type and certificate for the exact model with LONGWELL before ordering, and follow the site’s gas testing and permit rules.
Drying
Restoration air movers blow a low, wide stream of air across floors, carpets and walls to speed up evaporation. They work together with dehumidifiers that remove the moisture from the room.
Fan families
Download: floor dryer catalogue
What to include in your enquiry
- Task: confined-space supply, fume extraction or drying
- Space size, duct length and number of bends
- Any hazardous atmosphere, dust or water exposure
- Voltage and plug type; quantity and branding
Ask about site ventilation fans →
FAQ
What fan is used for confined-space entry?
A portable axial fan with flexible duct, blowing fresh air to the work area or extracting contaminated air, sized for the space and the duct length.
What is the difference between an air mover and a normal fan?
An air mover uses a centrifugal blower to push a fast, low stream of air across floors and walls, which dries surfaces faster than a normal fan.
Do you make air movers for restoration brands?
Yes. LONGWELL supplies air movers and floor dryers to restoration equipment brands and distributors, including private-label versions.