guardianplus guardian plus air systems whole house air purifierNuToneGuardian Plus Model GSHH3K by NuTone


  • Combines HEPA filtration, fresh air ventilation and heat recovery (fresh air is heated and filtered for maximum comfort in any season). Recirculation mode available.
  • Broan-NuTone GuardianPlus GSHH3K Whole House Air PurifierFilters indoor air and eliminates microscopic particles.
  • Eliminates excess humidity during the cold seasons and gaseous pollutants by exhausting stale air and replacing it with fresh filtered air.
  • Improves indoor air quality and helps reduce the symptoms associated with respiratory problems.
  • Recirculates air throughout the house.
  • True HEPA Filter included with each unit. Two pre-filters included.
  • Up to 2,500 square foot capacity whole house HEPA air purification.
  • Convenient electronic (low voltage) wall mounted control. LED indicates system's operation mode and signals filter maintenance.
  • Installation kit included.
  • 2-year warranty.
  • Also see our Guardian Plus Frequently Asked Questions.


TypeWhole House Air Purifier
CapacityUp to 2,500 square foot Home
Product Dimensions22.9" (L) x 22.9"(W) x 29.4"(H)
Power Consumption220 watts
Input Voltage/Motor Rating-Volts120 Volts
Fresh Air Flow70-105 CFM
Total Air Flow270 CFM
Diameter of Air Exhaust and Fresh Air Vents6 inches
Diameter of Indoor Air Ports8 inches
Warranty2 yr Limited Warranty
Replacement Filter No.Coming Soon!
Shipping Weight48 lbs.
Installation LocationBasement, Attic, Garage, Crawl Space

PDFView/Download PDF Data Files (requires Adobe Acrobat Reader):
Specification Sheet

Guardian Plus GSHH3K
HEPA Filtration/Fresh Air/Heat Recovery

Guardian Plus Whole House Air Purifiers by Broan-Nutone
Broan-Nutone Guardian Plus Whole House Purifier Models:Guardian Plus Accessories:
GSFH1K - HEPA Air Filtration
GSVH1K - HEPA & Fresh Air Ventilation
GSHH3K - HEPA, Fresh Air Ventilation plus Heat Recovery
GSEH3K - HEPA, Fresh Air Ventilation plus Energy Recovery
(Filters and Pre-Filters Accessories)

Frequently Asked Questions
Nutone Manufacturer Home Page


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