HEPA-AIRE® H1990LV Variable Speed

Overview

A high-performance, portable negative-air machine for abatement, healthcare construction, and critical-environment work. The H1990LV pairs a rugged 20-ga galvanized steel cabinet with true HEPA filtration and variable-speed airflow to help you establish negative, positive, or recirculation modes on site. Rated up to 600–1,800 CFM with clean filters, it runs on a standard 120 V / 15 A circuit and includes a tested 99.97% @ 0.3 µm HEPA filter. 

Features

• Variable speed, high output: 1 HP motor; 600–1,800 CFM (with clean filters). 

• True HEPA final stage: Certified 99.97% efficiency @ 0.3 µm (P/N H1910M). 

• Durable, job-site build: 20-ga galvanized steel cabinet; two fixed casters + two locking 4" swivel casters; side lift handles. 

• Easy service access: Hinged/drop-in prefilter access door; filter-change indicator. 

• 12" ducting ready: 12" outlet collar; optional H1980P molded inlet manifold accepts 12" flex duct. 

• NRTL safety certification: Independently tested to UL/CAN-CSA standards by TÜV SÜD. 

Specifications

• Airflow (variable): 600–1,800 CFM (with clean filters) guideline; ducting/filter load reduces flow. 

• Power: 120 VAC, 60 Hz, 15 A circuit; normal operating current ≤ 8 A per cut sheet (manual lists ≤ 12 A). 

• Motor: 1 HP, single-phase, thermal overload protection (auto-reset). 

• Sound level: ~70 dBA at 5 ft on high.

• Dimensions / Weight: 35.5" L × 19.5" W × 30.25" H; net 122 lb; shipping 138 lb. 

• Cabinet: 20-ga galvanized steel. 

• Filters (standard):

  • First stage: 2" pleated particulate prefilter (P/N H1902). 

  • Final stage: True HEPA (P/N H1910M). 

  • Alternatives / options: 1" polypad prefilter (H1901) and 2" VAPOR-LOCK® carbon (VL2002) available. 

• Ducting: 12" outlet collar; optional H1980P inlet adapter (12"). 

Installation (setup & use)

1. Position the unit near the work area on a level surface; lock the swivel casters. 

2. Select mode:

   • Negative pressure: Place inside containment and exhaust through 12" flex duct to a safe location; or place outside and duct from the inlet (H1980P adapter) into containment. Aim for exhaust volume ≥ the greater of +10% or +100 CFM over the inflow. 

   • Recirculation: Return filtered air to the same room to reduce airborne particulates. 

   • Positive pressure: Supply filtered air into a protected area per project requirements. 

3. Electrical: Use a dedicated 120 V / 15 A circuit. If an extension cord is required, use UL-listed 12/3 AWG SJTW, total length ≤ 50 ft. 

4. Filter check: Confirm the prefilter and HEPA are seated; replace if the indicator lamp shows a change is due. 

5. Run & verify: Start the unit, set speed as needed, and (for pressure control) monitor differential pressure with a calibrated gauge. 

What’s in the Box

• H1990LV unit with casters installed

• 2" pleated particulate prefilter (H1902)

• True HEPA final filter (H1910M)

• User/installation manual
  (Optional accessories sold separately: H1980P 12" inlet manifold, H1901 polypad, VL2002 carbon filter.) 

Important Details

• Safety & use: Indoor use; not intrinsically safe—do not use in explosive/IDLH atmospheres or with hazardous vapors. Avoid solid-state external speed controls. Automatic-restart feature after power interruption. 

• Air changes planning: Typical target is ≥ 6 ACH for construction areas; consider a 25–75% safety factor to account for filter loading and site losses. 

• Performance notes: Published airflow is with clean filters and ideal test setup; duct length/bends, voltage drop, and filter loading reduce CFM. 

Warranty

1-year limited warranty to the original user against defects in materials/workmanship (filters and normal consumables excluded). Use of non-Abatement parts/filters can void performance claims and warranty. For service, contact Abatement Technologies.

Spec discrepancies to note: The latest cut sheet lists normal operating current ≤ 8 A, while the manual page lists ≤ 12 A. If amperage draw matters for your jobsite power plan, verify with your distributor before ordering.