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Negative Pressure Units


Negative Pressure Air-Filtration Units (NPU's)

Envirogard hires a range of air filtration units which deliver high standards of filtration and high levels of negative pressure to contain airborne pollutants.

Negative Pressure Units (NPU's) are available in a range of sizes with capacities from 600 - 5400 M3/hr. 

All machines are "roll-up, plug-in, switch-on", are easy to use, and run on 110 volt.  

Mounted on castors the NPU's can easily be manoeuvred and will pass through standard pedestrian doors; carry-handles allow them to be lifted over rough ground. 

All Envirogard NPU's are equipped with H14 HEPA filters which remove better than 99.995% of dust at 0.3 micron, and each machine is supplied with a filtration-test certificate confirming performance.

Medium and large machines can be supplied with a roving filter housing increasing the number of filtration stages from 2 to 4 - ideal for applications involving high dust levels, or combinations of fine and coarse dust. 

The roving filter housing also allows the option for the NPU to be located outside the work area with a flexible ducting linked to the roving head in the work area - helpful on congested sites.

You can collect hire equipment from our depots or we can deliver to your location - see map in side bar.


Hire Locations

Hire equipment is available for use throughout the UK. Envirogard provides delivery to the areas in dark blue; third party transport services provide delivery to areas in light blue - please enquire for prices.
You can also collect for free from our hire depots. Click Here to find our locations.

Hire Enquiries

ASHFORD 01303 814 930
MANCHESTER 01613 208 587
BARNSLEY 01226 740 900
TAMWORTH 01827 304 955
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