Please ensure Javascript is enabled for purposes of website accessibility Legend Brands Restoration | DefendAir® HEPA 500
DefendAir® HEPA 500
Product Description
Rugged, high-efficiency air filtration. Restore and maintain indoor air quality during cleaning, remodels and remediation. Suitable for use in homes, light industrial settings, schools, hospitality venues and healthcare environments – wherever portable, efficient HEPA filtration is needed.

Learn more about HEPA filtration in our Tech Tips Blog.
Sizes ▪ Options
114178 (F284): One unit
Air movement: 250–500 CFM
Circuit maximum: Plug up to four units together for a total of 2000 CFM on a single 15-amp circuit
Static pressure: 2.9 in. (H2O)
Use weight: 44 lbs. | 19.9 kg
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  • Includes one primary HEPA filter (F321) and one prefilter (30% - F271)
  • Filter change light indicates when primary (HEPA) filter needs to be changed
  • Daisy chain capability - link up to 4 units on 1 power outlet
  • Variable CFM on each unit - up to 2000 CFM per 15-amp circuit
  • Stackable, lightweight, and easily transportable



  • Air movement:  250–500 CFM
  • Circuit maximum:  Plug up to four units together for a total of 2000 CFM on a single 15-amp circuit
  • Static pressure:  2.9 in. (H2O)
  • Use weight:  44 lbs. | 19.9 kg
  • Dimensions (W × H × D):  26.2 × 24.6 × 18.2 in. ¦ 66.5 × 62.5 × 46.2 cm
  • Duct sizes:  Intake: 12 in. / Outlet: 8 in.
  • Volts:  115V
  • Frequency:  60 Hz
  • Amps:  3A
  • Sound level (varies based on speed):  63 - 73 dB
  • Housing:  Rotomolded polyethylene
  • Power cord length:  25 ft. | 7.62 m
  • Power outlet:  GFCI protected
  • Pre-filter:  Standard paper pre-filters, plus activated carbon (F397) and DOP (F415) filter options
  • Primary filter:  HEPA filtration technology
  • Safety:  ETL certified to UL/cUL standards
  • Xactimate:  WTRNAFAN
  • Legend Rewards: 





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"Love my HEPA500 airscrubber. I use it in high-end remodeling as a negative air filter to isolate and control dust while working in people's homes. It is specified in use on every interior contract and helps sell jobs as well as keep people happy."

–Rich Gwinn
"We had a Dri-Eaz HEPA 500 fall out of a work truck onto the street at 45 mph. The buttons fell off but it still worked! Awesome product!"

–Edmar Maldonado, Dryfast Systems, Orlando, FL
"It’s lightweight and easy to transport. It’s the only air scrubber we use."

–Tray Lockridge, Paul Davis, Norcross, GA
"The HEPA 500 is compact and I feel confident that it's keeping the air healthy. Very simple and easy to use. I'd use it on the majority of jobs."

–Bradley Briggs, Valley Pro Carpet Care, Modesto, CA
"The HEPA 500 is a great size for crawlspaces and tight spaces. I love the removable fitted covers because they prevent cross contamination. Thanks for a great product!"

–Joel Howell, RestorePro, Kansas City, MO