---
product_id: 111259615
title: "TjernlundV4D UnderAire Moisture Reducing Crawlspace Ventilator Fan"
brand: "tjernlund"
price: "B/.1120"
currency: PAB
in_stock: true
reviews_count: 8
url: https://www.desertcart.com.pa/products/111259615-tjernlundv4d-underaire-moisture-reducing-crawlspace-ventilator-fan
store_origin: PA
region: Panama
---

# TjernlundV4D UnderAire Moisture Reducing Crawlspace Ventilator Fan

**Brand:** tjernlund
**Price:** B/.1120
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** TjernlundV4D UnderAire Moisture Reducing Crawlspace Ventilator Fan by tjernlund
- **How much does it cost?** B/.1120 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/111259615-tjernlundv4d-underaire-moisture-reducing-crawlspace-ventilator-fan)

## Best For

- tjernlund enthusiasts

## Why This Product

- Trusted tjernlund brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

TjernlundV4D UnderAire Moisture Reducing Crawlspace Ventilator Fan

## Features

- Make sure this fits by entering your model number.
- Dimensions: 18" x 11" x 4", trimmable dimensions: 12 1/2” x 10 1/2”
- Includes adjustable dehumidistat, freeze protection limit and 6 foot grounded power cord
- Power ventilate musty, damp crawl spaces through existing passive vents
- Motor: 120 volts 50/60 hz, 0.24 amps maximum
- 540 CFM

## Images

![TjernlundV4D UnderAire Moisture Reducing Crawlspace Ventilator Fan - Image 1](https://m.media-amazon.com/images/I/910hv9zDWZL.jpg)
![TjernlundV4D UnderAire Moisture Reducing Crawlspace Ventilator Fan - Image 2](https://m.media-amazon.com/images/I/41M4KhzPtQL.jpg)
![TjernlundV4D UnderAire Moisture Reducing Crawlspace Ventilator Fan - Image 3](https://m.media-amazon.com/images/I/51-QP0vRFeL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    does the job
  

*by G***Y on Reviewed in the United States 🇺🇸 on October 22, 2022*

you need to be a bit handy to install properly. install will vary depending on wood or block construction. so far my cellars smell problem is gone. will further review down the road on endurance of this product.

### ⭐⭐⭐⭐⭐ 







  
  
    Solved crawl space sewer smell!
  

*by P***E on Reviewed in the United States 🇺🇸 on August 9, 2022*

So thankful for this hardworking little fan. After an unfortunate sewage leak occurred in our crawl space, we had an awful smell in the house for weeks. Even after talking appropriate steps to deal with the leak and the spill, the humidity in the crawl space made the smell persist. The fan was the solution. We were able to install it in an existing vest from outside the house (it’s plugged in to a weather-proof outdoor outlet). Within 24 hours of installing it, the smell in the house was completely gone.This fan has a built-in humidistat, so you can adjust it to turn on automatically when the humidity in the crawl space reaches a certain level. It operates very quietly. Installation was simple and quick (be sure to measure your vent opening to ensure a good fit). Other reviews mentioned excellent longevity, so I’m hopeful about our unit. Highly recommended.

### ⭐⭐⭐⭐ 







  
  
    Removes Stale Air
  

*by L***E on Reviewed in the United States 🇺🇸 on September 17, 2022*

Relatively sturdy. I had gotten this to help with removing basement humidity. However, since I've gotten this appliance, my humidity doesn't get lower than 60%, which before installation was around 55%. The good news is that it's powerful enough that it has gotten rid of the stale basement air.

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**Shop now:** [https://www.desertcart.com.pa/products/111259615-tjernlundv4d-underaire-moisture-reducing-crawlspace-ventilator-fan](https://www.desertcart.com.pa/products/111259615-tjernlundv4d-underaire-moisture-reducing-crawlspace-ventilator-fan)

---

*Product available on Desertcart Panama*
*Store origin: PA*
*Last updated: 2026-01-31*