For homes that are 2500 square feet The Amaircare Airwash Whisper 350 is a high-quality HEPA air purification unit that includes: For homes that are 2500 square feet No hassle installation. Approx. 30% of air from the return air duct is diverted, cleaned and introduced back to circulation. Installation kit available. Third Stage VOC canister upgrade available. Made in Canada & covered by a 5-year limited warranty. Complete Delivery Uses existing air duct network in your home to deliver clean air to every room. Bypass Installation Mounts on the return air portion of the air handling system and does not impact the HVAC system or endanger the HVAC warranty. Interior Filter The 3 Stage filtration cartridge is contained and protected within a durable steel cabinet. Perfect Seal 3 Stage Filtration Captures large particulate and VOCs with the first stage foam prefilter, harmful and irritating particulate are trapped with the second stage HEPA filter that locks in place and chemical/gas pollution are adsorbed by the third stage carbon VOC filter. Easy-Twist HEPA Cartridge Filters are convenient to access and change with just a twist of the main HEPA Cartridge. Perfect Seal Filter Configuration Easy-Twist HEPA locks into place to ensure the filter is completely sealed in the unit and no polluted air leaks. Fully Insulated Construction Provides whisper quiet operation. Illuminated ON/OFF Toggle Control Easily switch operation Off and On with the simple rocker control switch. Continuous operation is recommended for optimum air quality. High-Efficiency AC Backward Curved Motorized Fan High performance air flow at a low running cost, minimal drain on electricity resources with years of continuous performance. Steel Construction, Baked Thermoset Powder Finish Durable, long lasting housing that doesn’t off-gas chemicals, true to the integrity of providing clean air. Optional VOC Filter Upgrade Radically increases the capacity for capturing chemical and gas pollution.