Please ensure Javascript is enabled for purposes of website accessibility

We are closed on Friday, July 4th, 2025 for Independence Day weekend and reopening Monday July 7th, 2025. Enjoy and be safe.

We ship to most places in continental USA
Chat with us
Need help
Our Locations

Tjernlund CS2 UnderAire™ 115 Voltage Fresh Air Supply Fans for Crawl Spaces

SKU
TJECS2

In Stock. Ships in 1-7 Business Days.

Retail : $414.00 - $209.82 =
$204.18 You Save (51%)
  • Width Inches: 18"

  • Height Inches: 9"

  • Depth Inches: 2"

  • Motor Type: Shaded Pole

  • Mounting: Bracket-mounted

- +
  • Width Inches: 18"

  • Height Inches: 9"

  • Depth Inches: 2"

  • Motor Type: Shaded Pole

  • Mounting: Bracket-mounted

Product details

Tjernlund CS2 UnderAire™ 115 Voltage Fresh Air Supply Fans for Crawl Spaces

The Tjernlund UnderAire™ Series Fresh Air Supply Fans for Crawl Spaces are designed to boost fresh outdoor air underneath homes and porches. Use in conjunction with Tjernlund UnderAire™ Crawl Space Exhaust Fans to remove moisture in Crawl Spaces with too few or undersized passive vent openings, overall lengths of over 40 feet, or in “dead zones” or stagnant areas that are not served by existing foundation vents. Excessive humidity levels in Crawl Spaces is the leading cause of premature rotting of support columns, joists, floors and beam supports. Humidity can promote fungus growth and increased termite activity. Humidity may also cause plumbing failures due to rust and corrosion. Helps dilute radon gases, treated wood off-gassing and other odors that might migrate into living areas. All models are equipped with a factory installed and pre-wired freeze protection thermostat which will prevent operation of the fan below 35°F.

Features

  • Single-speed operation for consistent airflow

  • Corrosion-resistant construction for long-lasting performance

  • Moisture-resistant motor for operation in humid environments

  • Easy installation with included mounting brackets

  • Applications:
  • Crawl space ventilation

  • Exhausting stale air and moisture

  • Improving air quality in confined spaces

  • Preventing mold and mildew growth

Tjernlund
See All Tjernlund Products

Specification Sheet

Basic Information
MPN ? Manufacturer Part Number CS2
UPC / GTIN 080956957306
Manufacturer Tjernlund
Series ? A manufacturer's grouping of items that match, coordinate, or complement each other. UnderAire
Dimensions and Measurements
Height (Inches) ? The vertical measurement from bottom to top, measured in inches. 9"
Width (Inches) ? The horizontal measurement from left to right, measured in inches. 18"
Depth (Inches) ? Depth 2"
Airflow Efficiency 220 CFM
Weight ? Weight 5.00
Voltage 115 V
Wattage 40
Characteristics and Features
Finish ? The finish of the product provided by the manufacturer Aluminum
Warranty and Product Information
Product Warranty 1 Years Limited Warranty
More from Tjernlund


By using this site you agree to our Terms, Conditions of Use and Privacy Statement
© 2025 AF Supply Corp. All Rights Reserved.