---
product_id: 89052179
title: "Fantech Rn2 Radon Mitigation Fan, 4.5 in Duct, 123 CFM, Residential System"
brand: "fantech"
price: "₨10184"
currency: SCR
in_stock: true
reviews_count: 13
category: "Fantech"
url: https://www.desertcart.sc/products/89052179-fantech-rn2-radon-mitigation-fan-4-5-in-duct-123
store_origin: SC
region: Seychelles
---

# 123 CFM airflow capacity 4.5-inch duct size Ultra-quiet 25 dB noise level Fantech Rn2 Radon Mitigation Fan, 4.5 in Duct, 123 CFM, Residential System

**Brand:** fantech
**Price:** ₨10184
**Availability:** ✅ In Stock

## Summary

> 💨 Quiet power that keeps your home safe and your peace intact.

## Quick Answers

- **What is this?** Fantech Rn2 Radon Mitigation Fan, 4.5 in Duct, 123 CFM, Residential System by fantech
- **How much does it cost?** ₨10184 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/89052179-fantech-rn2-radon-mitigation-fan-4-5-in-duct-123)

## 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

- • **Energy Efficient Power:** Consumes just 58 watts while delivering powerful 123 CFM airflow for optimal radon reduction.
- • **Versatile Installation:** Mounts effortlessly indoors, outdoors, or in wet locations—adaptable to any radon mitigation setup.
- • **Whisper-Quiet Operation:** Runs at a barely audible 25 dB, perfect for continuous indoor or outdoor use without disruption.
- • **Direct Replacement Ready:** Compatible with older models like HP2190Q for hassle-free upgrades and peace of mind.
- • **Seamless Leak-Proof Design:** Vibration welded seam ensures airtight, durable housing for long-term reliability.

## Overview

The Fantech Rn2 Radon Mitigation Fan is a high-performance, ultra-quiet ventilation solution designed for residential radon reduction. Featuring a standard 4.5-inch duct size, 123 CFM airflow at 0.50” static pressure, and a vibration welded leak-proof housing, it ensures reliable, energy-efficient operation at just 25 dB noise level. Suitable for indoor, outdoor, and wet locations, this fan is a direct, easy replacement for older models, delivering superior durability and whisper-quiet performance that professionals and homeowners trust.

## 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: 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!
Review: Perfect replacement for old Fantech HP190 radon fan - I had an old Fantech HP190 radon fan in my attic that was getting very loud. I replaced it with the new Rn2 model and am quite happy. The Rn2 seems well built. The Rn2 is slightly shorter and has different size connectors than the HP 190, but I had no problem finding some flexible PVC couplings that worked perfectly at the local hardware store (I used a 4" x 4" on bottom and 4" x 3" on top). The bigger problem was that whoever originally installed the fan used 3" PVC pipe with 4" adapters cemented in the ends. That gave the fan a little more stability, but made it impossible to slide the coupler up the pipe to remove/replace the fan. I ended up having to cut off the top 4" PVC adapter along with some 3" pipe back far enough that would allow me to add a standard 3" PVC coupler and 3" PVC pipe to get it to the right height so that the fan could easily slip in, but still allow the coupler to slide up the pipe for installation/removal. Wiring up the new fan was no problem, I just used the plug from the old fan. The new fan is working great and quiet. Fantech included a tootsie pop and an "Our fans suck" stick in the box for fun.

## 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 | 220 cfm |
| Best Sellers Rank | #201,588 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #850 in Household Ventilation Fans |
| Brand | FANTECH |
| Brand Name | FANTECH |
| Compatible Devices | Desktop |
| Cooling Method | Air |
| Customer Reviews | 4.5 out of 5 stars 479 Reviews |
| Global Trade Identification Number | 00650737890520 |
| Item Dimensions L x W x H | 13.25"L x 13.25"W x 11"H |
| Item Type Name | Radon Fan - 4.5" Duct - 123 cfm |
| Item Weight | 16 ounces |
| Manufacturer | Fantech |
| Material Type | Engineered Plastic |
| Maximum Rotational Speed | 1500 rpm |
| Model | Rn2 |
| Noise Level | 25 db |
| Number of Items | 1 |
| Number of Packs | 1 |
| Part Number | Rn2 |
| Power Connector Type | 4-Pin |
| Product Dimensions | 13.25"L x 13.25"W x 11"H |
| 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 Mitigation Fan, 4.5 in Duct, 123 CFM, Residential System - Image 1](https://m.media-amazon.com/images/I/41GV26vj7US.jpg)
![Fantech Rn2 Radon Mitigation Fan, 4.5 in Duct, 123 CFM, Residential System - Image 2](https://m.media-amazon.com/images/I/71haWhohVaL.jpg)

## Available Options

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

## 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

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

### ⭐⭐⭐⭐⭐ Perfect replacement for old Fantech HP190 radon fan
*by D***R on December 10, 2018*

I had an old Fantech HP190 radon fan in my attic that was getting very loud. I replaced it with the new Rn2 model and am quite happy. The Rn2 seems well built. The Rn2 is slightly shorter and has different size connectors than the HP 190, but I had no problem finding some flexible PVC couplings that worked perfectly at the local hardware store (I used a 4" x 4" on bottom and 4" x 3" on top). The bigger problem was that whoever originally installed the fan used 3" PVC pipe with 4" adapters cemented in the ends. That gave the fan a little more stability, but made it impossible to slide the coupler up the pipe to remove/replace the fan. I ended up having to cut off the top 4" PVC adapter along with some 3" pipe back far enough that would allow me to add a standard 3" PVC coupler and 3" PVC pipe to get it to the right height so that the fan could easily slip in, but still allow the coupler to slide up the pipe for installation/removal. Wiring up the new fan was no problem, I just used the plug from the old fan. The new fan is working great and quiet. Fantech included a tootsie pop and an "Our fans suck" stick in the box for fun.

### ⭐⭐⭐⭐⭐ Works great, great warranty
*by L***R on November 1, 2020*

Bought this mainly because the Radon-Away only has a 1 year warranty if you install it yourself. Fantech has a 5-yr, which goes to 6 years if you register. Installed it in my sump pit and Radon levels dropped from 40 to 0.5. So I added a "Cdmall Electronic Fan Speed Controller Variable Adjuster for Hydroponics Inline Duct Exhaust Ceiling Fans with 6' Long 120V 15A Cord" which let me reduce the fan speed so it runs quieter and uses less power. It wasn't that loud to start with but now you can barely hear it, and the Radon level is about 0.8. I installed it inside the basement thinking it would hold up better not being exposed to temperature extremes. I know the EPA wants you to put it outside but I did this to reduce Radon, not to please the EPA. Plus I have confidence in my mad skills at gluing PVC pipe together. Left room outside so I can move the pump outside if I sell the place. Bought the install kit which made the it very easy to hook up. Hardest part was cutting a hole through the basement wall. I also want to mention that the screws for attaching the lid over the electrical connection compartment were in a plastic bag kind of wedged in the bottom of the compartment; not that easy to see. Another reviewer said they were missing. Also, this does not need to be grounded and there is no place to connect a ground wire. I just used a 2-conductor cord I'd salvaged from some other appliance - finally my hoarding tendency has been vindicated.

## 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 Seychelles*
*Store origin: SC*
*Last updated: 2026-08-30*