---
product_id: 279917900
title: "Fantech Rn2 Radon Fan - 4.5\" Duct - 123 cfm"
brand: "fantech"
price: "658624CFA"
currency: XOF
in_stock: true
reviews_count: 5
category: "Fantech"
url: https://www.desertcart.sn/products/279917900-fantech-rn2-radon-fan-4-5-duct-123-cfm
store_origin: SN
region: Senegal
---

# 123 CFM airflow 4.5" duct size 25 dB ultra-quiet Fantech Rn2 Radon Fan - 4.5" Duct - 123 cfm

**Brand:** fantech
**Price:** 658624CFA
**Availability:** ✅ In Stock

## Summary

> 💨 Quiet power that protects your home—and your peace of mind.

## Quick Answers

- **What is this?** Fantech Rn2 Radon Fan - 4.5" Duct - 123 cfm by fantech
- **How much does it cost?** 658624CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/279917900-fantech-rn2-radon-fan-4-5-duct-123-cfm)

## Best For

- fantech enthusiasts

## Why This Product

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

## Key Features

- • **Leak-Proof Durability:** Vibration welded seam guarantees airtight housing for maximum efficiency.
- • **Proven Radon Reduction Success:** Trusted by professionals and DIYers alike to slash radon levels by up to 90% within 24 hours.
- • **Versatile Indoor & Outdoor Use:** Engineered for wet locations and flexible mounting options to fit any mitigation need.
- • **Powerful Yet Whisper-Quiet Performance:** Delivers 123 CFM airflow at just 25 decibels—your home's silent guardian.
- • **Precision Fit for Seamless Installation:** Standard 4.5-inch duct size ensures hassle-free replacement or new setup.

## Overview

The Fantech Rn2 Radon Fan is a high-performance, ultra-quiet ventilation solution designed for radon mitigation. Featuring a standard 4.5-inch duct size, 123 CFM airflow capacity, and a vibration welded leak-proof housing, it excels in both indoor and outdoor wet locations. With a noise level as low as 25 decibels, it outperforms competitors by delivering effective radon reduction while maintaining near-silent operation, making it the go-to choice for professionals and homeowners seeking reliable, long-lasting air quality improvement.

## Description

Ideally tailored performance curve for a vast majority of your mitigations. This fan model can be mounted both indoor, outdoor and in wet locations.

Review: Right product （Rn2）for right job - The above photo is taken 20days after the fan wad installed. I have 1100 sfm footprint concrete slab in the basement. This DIY job is to improve the indoor air quality, hopefully to reduce the radon level from 150-200 Bq/m³ to somewhere minimum level. The piping (3" PVC S40) starts from furance room and runs into garage up at attic to the roof. The work runs smoothly and has taken 4 days to complete including material preparation. Upon running the fan, the current level (measured at 2nd floor) has droped down 70% at 12th hour, and 90% at 24th hour almost nothing left. Therefore, the objective of this job is achieved. Among many radon fan products, Fantech Rn2 is selected based the size of the footprint, noise level, sucking capacity and warranty length provided. Looking at the redult, a right fan is chosen. The fan is nicely manufactured and looks like fine quality. The amazing one is the noise level, extremly quiet!
Review: A highly recommended, VERY QUIET radon fan - BOTTOM LINE (well, I guess this is the TOP LINE), a HIGHLY RECOMMENDED replacement radon mitigation fan. First a little (OK, so maybe a lot) of history about my experience with RadonAway fans. As you will see, this review is as much about the HIGHLY RECOMMENDED Fantech radon fan, as about the disastrous RadonAway fan it replaced. When I bought my house, a high radon test result had required the seller to install a radon mitigation system before the sale. When I moved in, several months after the system had been installed, it had a RadonAway fan that sounded like a jet engine. Having never had a radon system before, I decided the noise level was normal and I would just have to live with it. Unfortunately, after 6 years, it had not only gotten MUCH louder (up to B52 jet engine levels), but also began making clanking noises. OK, so it had been 6 years (and maybe 6 years was all the lifetime one could expect from fan units that run continuously), so I replaced the fan with the same model through desertcart. Now it turns out that RadonAway's business model is to deal only with Radon Mitigation companies – they refuse to guaranty fans sold directly to end consumers through desertcart. OK, so I get that they don't want the liability of some idiot trying to design their own mitigation system, but once the system is designed, installed, and the fan is simply being replaced with exactly the same model, one might hope for them to stand behind their product. Not so much. The identical replacement fan was initially quieter than the original, but it began getting noisier after 4-5 months. After 2½ years, the fan motor bearings had worn out: not only was the replacement fan louder than the original, but the fan blades also began bouncing up and down on the shaft and were banging inside the housing. At this point, the RadonAway fan (on the OUTSIDE the house) produced more noise inside an adjacent first floor bathroom than the bathroom's own ceiling fan. The RadonAway fan’s ductwork attached to the side of the house transmitted so much noise through the outside wall to an upstairs bedroom that it was difficult to sleep. So, not even 3 years, but time for a third try. Replaced the fan again, still with the same model RadonAway fan as was originally installed by the mitigation company, and... was pleasantly surprised to discover that this third fan was quieter than my refrigerator, even when standing right beside it outdoors! However, only a little over 2 months later, the third fan suddenly became about twice as loud as the either of the first two fans – apparently due (again) to bad bearings. So three RadonAway fans, all of which wanted to be jet engines. VERY DISAPPOINTING, to say the least, since the whole point of a radon mitigation fan is for it to run continuously (AND QUIETLY!) for years. At this point, I decided almost anything was likely to be better than the RadonAway fans. After comparing specs, I ordered this equivalent Fantech fan. Installation was simple – it directly replaced the RadonAway fan. After installation, it was very quiet. Probably a little quieter than the last RadonAway fan when it was initially installed. Now, 1½ years later, it remains as quiet as when first installed. We will see whether it still is this quiet after another 6 years, but as of now I STONGLY recommend the Fantech fans. This is a clearly superior product!

## Features

- Standard 4 ½” pipe size
- 123cfm @ 0.50”sp and 20cfm @ 1.75”sp
- Vibration welded seam ensures leak-proof housing
- Formerly the HP2190Q

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07F6ZYG3B |
| Air Flow Capacity | 123 Cubic Feet Per Minute |
| Brand | Fantech |
| Brand Name | Fantech |
| Compatible Devices | Desktop |
| Compatible devices | Desktop |
| Cooling Method | Air |
| Cooling method | Air |
| Customer Reviews | 4.5 out of 5 stars 473 Reviews |
| Global Trade Identification Number | 00650737890520 |
| Item Type Name | Radon Fan - 4.5" Duct - 123 cfm |
| Item Weight | 1 Pounds |
| Manufacturer | Fantech |
| Material Type | Plastic |
| Model | Rn2 |
| Noise Level | 25 Decibels |
| Number of Items | 1 |
| Part Number | Rn2 |
| Power Connector Type | 4-Pin |
| Power connector type | 4-Pin |
| UPC | 650737020903 650737890520 |
| Unit Count | 1 Count |
| Voltage | 12 Volts |
| Wattage | 58 watts |

## Product Details

- **Brand:** FANTECH
- **Compatible Devices:** Desktop
- **Cooling Method:** Air
- **Material:** Engineered Plastic
- **Maximum Rotational Speed:** 1500 rpm
- **Noise Level:** 25 db
- **Power Connector Type:** 4-Pin
- **Product Dimensions:** 13.25"L x 13.25"W x 11"H
- **Voltage:** 12 volts
- **Wattage:** 58 watts

## Images

![Fantech Rn2 Radon Fan - 4.5" Duct - 123 cfm - Image 1](https://m.media-amazon.com/images/I/41GV26vj7US.jpg)
![Fantech Rn2 Radon Fan - 4.5" Duct - 123 cfm - Image 2](https://m.media-amazon.com/images/I/71haWhohVaL.jpg)
![Fantech Rn2 Radon Fan - 4.5" Duct - 123 cfm - Image 3](https://m.media-amazon.com/images/I/61uqkC3aVnL.jpg)

## Questions & Answers

**Q: Looking at "b 4.5".  current one is 4", to 3" pipes.  other reviews/questions + product title indicate this is 4".  is it 4" or 4.5"?**
A: Always think pipe dimensions (the ID of the pipe) when dealing with pipe.  The Rn2's top and bottom connections are 4.5" OD nominal which translates to 4" pipe. You use a 4x3 Flex Coupling with the Rn2 and 3" PVC pipe.  The PVC vent pipe is usually 3" which translates to 3.5" OD x 3" ID Schedule 40 PVC.

**Q: how many square feet of basement with a sump pump will this service**
A: Basing fan selection on square footage of a basement is not exact since air flows will vary based on many factors. But in most cases the RN2 should be fine up to about 2500 sq/ft. This is a 4" fan so using 4" pipe will give the best results.

**Q: Can this fan be on a switch and turned off when we are away?**
A: As a radon professional, most of the fan failures I've seen in 20 years are when fans have been off for a period.  Soil moisture coming out of the pipe and condensing on the metal parts (bearings) can ruin them.  They seem to be good for at least 15 years running continuously when properly installed.  If you have to shut it off, remove and store the fan and replace the space left by the fan with solid pipe so you don't have any other moisture issues.  Shut off switches located near these fans is an NEC safety code requirement.  Radon levels go right back up a few hours after turning a fan off and the converse is true.

**Q: The rn-1 is advertised on amazon as 90cfm. why does the sticker on my rn-1 say 130 cfm ?**
A: I don’t know. I have a rn-2 fan which is 130 cfm.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Right product （Rn2）for right job
*by G***G on 28 November 2020*

The above photo is taken 20days after the fan wad installed. I have 1100 sfm footprint concrete slab in the basement. This DIY job is to improve the indoor air quality, hopefully to reduce the radon level from 150-200 Bq/m³ to somewhere minimum level. The piping (3" PVC S40) starts from furance room and runs into garage up at attic to the roof. The work runs smoothly and has taken 4 days to complete including material preparation. Upon running the fan, the current level (measured at 2nd floor) has droped down 70% at 12th hour, and 90% at 24th hour almost nothing left. Therefore, the objective of this job is achieved. Among many radon fan products, Fantech Rn2 is selected based the size of the footprint, noise level, sucking capacity and warranty length provided. Looking at the redult, a right fan is chosen. The fan is nicely manufactured and looks like fine quality. The amazing one is the noise level, extremly quiet!

### ⭐⭐⭐⭐⭐ A highly recommended, VERY QUIET radon fan
*by M***Y on 17 August 2026*

BOTTOM LINE (well, I guess this is the TOP LINE), a HIGHLY RECOMMENDED replacement radon mitigation fan. First a little (OK, so maybe a lot) of history about my experience with RadonAway fans. As you will see, this review is as much about the HIGHLY RECOMMENDED Fantech radon fan, as about the disastrous RadonAway fan it replaced. When I bought my house, a high radon test result had required the seller to install a radon mitigation system before the sale. When I moved in, several months after the system had been installed, it had a RadonAway fan that sounded like a jet engine. Having never had a radon system before, I decided the noise level was normal and I would just have to live with it. Unfortunately, after 6 years, it had not only gotten MUCH louder (up to B52 jet engine levels), but also began making clanking noises. OK, so it had been 6 years (and maybe 6 years was all the lifetime one could expect from fan units that run continuously), so I replaced the fan with the same model through Amazon. Now it turns out that RadonAway's business model is to deal only with Radon Mitigation companies – they refuse to guaranty fans sold directly to end consumers through Amazon. OK, so I get that they don't want the liability of some idiot trying to design their own mitigation system, but once the system is designed, installed, and the fan is simply being replaced with exactly the same model, one might hope for them to stand behind their product. Not so much. The identical replacement fan was initially quieter than the original, but it began getting noisier after 4-5 months. After 2½ years, the fan motor bearings had worn out: not only was the replacement fan louder than the original, but the fan blades also began bouncing up and down on the shaft and were banging inside the housing. At this point, the RadonAway fan (on the OUTSIDE the house) produced more noise inside an adjacent first floor bathroom than the bathroom's own ceiling fan. The RadonAway fan’s ductwork attached to the side of the house transmitted so much noise through the outside wall to an upstairs bedroom that it was difficult to sleep. So, not even 3 years, but time for a third try. Replaced the fan again, still with the same model RadonAway fan as was originally installed by the mitigation company, and... was pleasantly surprised to discover that this third fan was quieter than my refrigerator, even when standing right beside it outdoors! However, only a little over 2 months later, the third fan suddenly became about twice as loud as the either of the first two fans – apparently due (again) to bad bearings. So three RadonAway fans, all of which wanted to be jet engines. VERY DISAPPOINTING, to say the least, since the whole point of a radon mitigation fan is for it to run continuously (AND QUIETLY!) for years. At this point, I decided almost anything was likely to be better than the RadonAway fans. After comparing specs, I ordered this equivalent Fantech fan. Installation was simple – it directly replaced the RadonAway fan. After installation, it was very quiet. Probably a little quieter than the last RadonAway fan when it was initially installed. Now, 1½ years later, it remains as quiet as when first installed. We will see whether it still is this quiet after another 6 years, but as of now I STONGLY recommend the Fantech fans. This is a clearly superior product!

### ⭐⭐⭐⭐⭐ As advertised a good replacement to old 2133 fan.
*by M***N on 21 September 2021*

I have this unit indoors, noise is important to me. This unit is quiet and powerful uses only a few watts. Easy to install.

## Frequently Bought Together

- Fantech RN2 Radon Fan | 4 Inch | Quiet and Efficient Radon Mitigation | 220 Cfm White
- Power Cord Kit - 6 foot
- Fantech FRIK 2190-3 Radon Fan Install Kit Works with HP 2133 and HP 2190, 3"

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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-09-08*