Crawl Space Ventilation Fan - 720 CFM Stainless Steel Fan with Humidistat and Dehumidistat, IP55 Rated for Basements, Garages and Attics

The Need for Crawl Space Ventilation Fans Confined crawl spaces often lack adequate air circulation, leading to the accumulation of moist air. Prolonged exposure to moisture can foster mold growth and wood rot, compromising the structural integrity of the space. Additionally, airborne particulates can infiltrate living areas through floors, cracks, and even HVAC systems, creating an unhealthy indoor environment for occupants.

The AlorAir Underground Ventilation System offers a solution by efficiently removing moist air from confined spaces and allowing fresh outside air to circulate. This process effectively mitigates excess heat, moisture, dust, and odors, whether in a crawl space, basement, garage, or workshop.

Key Features Isolation Mesh: Prevents particulates from entering the machine and interfering with its operation, while also stopping contaminants from reaching the living space.

Built to Last: The fan system utilizes a stainless steel mounting frame, providing high water resistance and protection, enabling it to withstand various weather conditions.

Physics Switch Dehumidistat: Features a simple knob control panel without a complex electronic interface, making it easy to set the desired humidity level within a 10-80% RH range.

Comprehensive Performance Temperature and Humidity Balance: The built-in dehumidistat maintains the desired humidity level, while the antifreeze thermostat stops the fan when outdoor temperatures are too low, extending the machine's lifespan.

Memory Function: The fan automatically starts when humidity levels exceed the set value and stops when the humidity falls below the set point.

Canned Ball Bearing Motors: Reduce energy consumption and noise levels for a quieter operation.

Installation Considerations Crawl space fans must be installed in electrical control boxes with the motors facing the crawl space interior.

1. Ensure that the doors and vent covers of the surrounding buildings are open.
2. Mark four points on the wall to confirm the installation position and maintain a stable fan placement.
3. Secure the fan to the wall using four screws, ensuring the proper horizontal orientation.
4. For masonry or brick surfaces, pre-drill 5/16-inch holes and install wall anchors before mounting the fan. For wood-framed or existing vent installations, use screws, washers, and nuts to secure the fan.

Product Comparison VentirPro 720S: Suitable for 5,600-7,400 cubic feet spaces, with a 720 CFM airflow, 68W power, and noise levels below 55 dBA.

VentirPro 540S: Suitable for 3,600-5,600 cubic feet spaces, with a 540 CFM airflow, 45W power, and noise levels below 55 dBA.

VentirPro 260S: Suitable for 2,400-3,600 cubic feet spaces, with a 260 CFM airflow, 30W power, and noise levels below 40 dBA.

All models operate within a 10-80% humidity range and 35-158°F temperature range, and are ETL certified for safety.

AlorAir: A Trusted Brand AlorAir is a leading damage restoration company with world-class manufacturing capabilities, extensive R&D facilities, and a dedicated team to support customers before and after the sale. Their product line focuses on the flood restoration market, offering a comprehensive range of dehumidifiers, blowers, and HEPA scrubbers to assist in drying and remediation efforts.

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