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Fantech Heat Recovery Ventilator Model SE 704N - 50 CFM Will ventilate homes up to 1,200 square feet. Indoor air quality problems have soared since the late 1970's when construction technology succeeded in developing energy efficient "tight" houses. Pollutants inside houses, which once escaped through cracks around windows and doors, are now trapped inside creating an indoor environment that is often 2 to 5 times more polluted than outside. Pet dander, mold spores, dust mites, allergens, tobacco smoke and other pollutants add up to poor indoor air quality. Fantech's line of IAQ Products can help you solve these problems through better ventilation. Choose from a complete line of Heat Recovery and Energy Recovery Ventilators to bring fresh outside air into the house while expelling stale polluted air. Fantech SHR Series Heat Recovery Ventilators are high performance, low maintenance units designed to improve indoor air quality and provide balanced ventilation in residential applications. Units include many installer-friendly features - easy-slide core guides, external electrical box, easy-access doors, and much more. Perfect for a small home or condominium - this compact ERV features easy mount wall bracket. The unit brings a continuous supply of fresh air into a home while exhausting an equal amount of contaminated air. The enthalpic core at the center of the unit transfers heat and moisture from the incoming air to the outgoing air. The air brought into the living area is cooled and the humidity is reduced for maximum comfort. Reduces the load on a home's air conditioner to save on cooling costs. Sizing For Your Residential Needs HRVs/ERVs are typically sized to ventilate the whole house at a minimum of .35 air changes per hour. To calculate minimum CFM requirements, simply take the square footage of the house (including basement) and multiply by the height of the ceiling to get cubic volume. Then, divide by 60 and multiply by .35. CLICK HERE FOR MORE INFORMATION ON SIZING AN AIR EXCHANGER FOR YOUR HOME SPECIFICATIONS CASE: 24 gauge galvanized steel. Baked powder coated paint, antique white. Cabinet fully insulated with 1" (25 mm) aluminum foil-face high density polystyrene foam to prevent condensation and meet the requirements of the UL 94HF. MOTORS: Two (2) German-manufactured, factory-balanced ebmT motors with backward curved blades. Motors come with permanently lubricated sealed ball bearings to guarantee long life and maintenance-free operation. Seven (7) year warranty. Steep fan curve requires no balancing. CORE: Enthalpy core configured for efficient cross-flow ventilation. Core is 8.5? x 8.5? (216 x 216 mm) with a 8? (205 mm) depth. Cores are manufactured to withstand large temperature variations. FILTERS: Two (2) Washable Electrostatic Panel Type Air Filters, 8.5? (216mm) x 8? (203mm) x 0.125? (3mm). CONTROLS Unit is designed to operate continuously on a single speed. SERVICEABILITY: Core, filters, and motors can be easily accessed through latched door. Core conveniently slides out on our new easy glide core guides. 10? (250mm) of clearance is recommended for removal of core. DUCT CONNECTION: 4? (100mm) steel duct connections with rubber gasket for easy sealing. WARRANTY: Limited 5 year on Enthalpy core, 7 year on motors, and 5 year on parts. POWER: 120 VAC, .36 Amps, 40 watts UNIT DIMENSIONS: 21.61" W X 17.25" H X 10.15" D