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A VoltAire pressurization module mounted on the side of a modular field office at an active mine site, with workers in hi-vis vests walking past

VoltAire Product Line

Pressurization Units

Maintain positive building pressure to keep dust, moisture, and contaminants out of critical enclosures and equipment rooms. Two solutions — from a bolt-on module for existing Bard HVAC systems to a fully automated standalone unit.

UL Listed −13°F to 131°F Made in USA

Two Solutions. One Goal.

Whether you need a cost-efficient add-on for an existing HVAC system or a fully automated standalone unit, VoltAire has you covered.

Bolt-On Module Cost-Efficient

PM300 / PM450

Pressurization Module for Bard Wall-Mount HVAC

VoltAire PM300/PM450 Pressurization Module

The PM Series bolts directly onto Bard wall-mount HVAC units to add positive building pressure without a separate installation. Manual rotary speed control lets technicians dial in the exact CFM needed. Dual-stage filtration with a mist eliminator and MERV 8 final filter keeps contaminants out.

Spec

PM300

PM450

Airflow
300 CFM
450 CFM
Voltage
115/230VAC
115/230VAC
MCA (115V)
3A
4A
Weight
34 lbs
36 lbs
Temp Range
-40 to 131°F
-40 to 131°F

Key Features

Direct mount to Bard 3.5-6 ton (W42-W72)
Plenum adapter for Bard 1.5-3 ton (W18-W36)
Manual speed potentiometer for precise CFM control
Mist eliminator + MERV 8 final filter
Independent power supply
Left or right side mounting

Optional

Stainless Steel Shutdown Damper HVAC Interlock 48VDC Power Economizer Kit Custom Paint
Standalone Unit Fully Automated

PU1600

PLC-Controlled Pressurization Unit — 1,600 CFM

VoltAire PU1600 Standalone Pressurization Unit

The PU1600 is a wall-mounted, self-contained pressurization unit with full PLC digital control. An ECM variable-speed fan automatically modulates to maintain your target building pressure via adjustable PID loops. Digital user interface with password-protected access provides real-time pressure monitoring, alarm management, and automatic filter loading compensation.

Spec

PU1600RN

PU1600RR

PU1600RS

Airflow
1,600 CFM
1,600 CFM
1,600 CFM
Voltage
208/230V 1P
208/230V 3P
460/480V 3P
MCA
10A
7.5A
5.5A
Max Static
2 in. W.C.
2 in. W.C.
2 in. W.C.
Weight
210 lbs
210 lbs
210 lbs

Key Features

316 stainless steel construction
ECM variable-speed fan with automatic modulation
PLC controller with adjustable PID loops
Digital UI with password-protected operator access
Automatic filter loading compensation
Pre-filter + MERV 13 final filter
Direct-to-room discharge (upward or downward)

Alarm Monitoring

Building Pressure
Dirty Filter
Fan Failure
Fire/Smoke Input
Build Your PU1600 & Request a Quote →

Applications

Positive pressure is critical anywhere contaminants threaten sensitive equipment.

Data Centers

Prevent particulate ingress into server rooms

Battery Rooms

Control hydrogen gas accumulation and dust

Equipment Buildings

Protect PLC and control equipment from environment

Clean Rooms

Maintain ISO classification pressure differentials

Manufacturing

Keep production areas free from external contaminants

Telecom Shelters

Protect network equipment in remote locations

Need Help Selecting the Right Unit?

Our team can help you determine the right pressurization solution for your building envelope, airflow requirements, and existing HVAC infrastructure.