9 Best Radon Mitigation Fans (November 2026)
The best radon mitigation fans include the Festa AMG Maverick Radon Fan for 4-inch systems, the Festa AMG Maverick Radon Fan for a 3-inch kit setup, and the Rysmirs 2 Speed Radon Fan for selectable airflow.
On this page (6 sections)
The best radon mitigation fan depends on your pipe size and system pressure, not the largest CFM number. To understand the equipment in context, see how a radon mitigation system works.
Festa's 4-inch AMG Maverick is a strong starting point for compatible systems, while the Rn2 fits 4.5-inch duct and the GP501 offers a 3-inch duct option for 3-inch or 4-inch pipe.
For replacements, identify the fan model and measure the pipe before comparing options. A fan that physically connects may still have the wrong performance for the system.
If you need a bundled setup, compare these picks with our best radon mitigation fan kit options. For installation planning, see the guide to radon monitor systems with an alarm, which can help you think through how you'll know when levels need attention.
Our picks at a glance
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Check itFantech Rn2 Radon Mitigation Fan
Best for 4.5-inch duct systems - 5
Check itDcfairfan 4x4 inch Radon Installation Fan Kit
Best for a 4-inch replacement kit - 6
Check itRadonAway 23011-1 XP201 Radon Mitigation Fan
Best for a 4-inch general-purpose replacement - 7
Check itDcfairfan 4x3 Inch Radon Mitigation System Kit
Best for a 3-inch kit with a manometer - 8
Check itRadonAway 23005-1 GP501 Radon Mitigation Fan
Best for 3-inch duct options - 9
Best for a lower-airflow 4-inch optionCheck it
Which radon mitigation fans stand out for different systems?
The strongest candidates here match a defined pipe size, system type or replacement need. We compared stated fit, airflow details, installation notes and included parts to sort out the options.
Our score weighs specs, features and buyer feedback against what you're shopping for. Fan performance depends on the mitigation system, so use the score as a shortlist aid rather than a substitute for checking system design.
For context on systems without a fan, read about passive radon mitigation.
| Product | Best for | Airflow | Pipe fit | Warranty | Our score |
|---|---|---|---|---|---|
| Festa AMG Maverick Radon Fan | 4-inch systems | 260 CFM | 4-inch Fernco couplers | 5 years | 9.7 |
| Festa AMG Maverick Radon Fan | a 3-inch kit setup | 260 CFM | 5 years | 9.6 | |
| Rysmirs 2 Speed Radon Fan | selectable airflow | 240 or 168 CFM | 9.5 | ||
| Fantech Rn2 Radon Mitigation Fan | 4.5-inch duct systems | 123 CFM at 0.50 in. static pressure | 9.4 | ||
| Dcfairfan 4x4 inch Radon Installation Fan Kit | a 4-inch replacement kit | 260 CFM stated | 3 years stated | 9.3 | |
| RadonAway 23011-1 XP201 Radon Mitigation Fan | a 4-inch general-purpose replacement | 9.2 | |||
| Dcfairfan 4x3 Inch Radon Mitigation System Kit | a 3-inch kit with a manometer | 260 CFM stated | 3 years stated | 9.1 | |
| RadonAway 23005-1 GP501 Radon Mitigation Fan | 3-inch duct options | 5-year limited | 8.9 | ||
| xyfair PF-100 | a lower-airflow 4-inch option | 190 CFM | 8-year limited, full replacement stated | 7.9 |
Festa AMG Maverick Radon Fan: Best for 4-inch systems
- 260 CFM stated airflow
- Fits 4-inch Fernco couplers
- Up to 70 watts
- 5-year warranty
The 4-inch Maverick is a straightforward candidate for a new or replacement system built around matching couplers. Festa recommends it for moderate-sized, newer structures with porous sub-slabs.
Pros
- Stated 260 CFM airflow
- Festa recommends it for porous sub-slabs
- 5-year warranty
Cons
- Not for use in unattended areas
- Check system pressure and installation requirements
The 4-inch AMG Maverick is the lead pick for a compatible system that needs a well-documented airflow figure. Festa states 260 CFM and recommends this model for moderate-sized, newer structures from 500 to 2,200 sq. ft. with porous sub-slabs such as gravel.
Festa also states a power draw up to 70 watts and a 50–60 dB range. Those figures give you a basis for comparison, but pipe length, bends, suction pit and static pressure still affect how a fan works in an installed system.
The fan fits 4-inch Fernco couplers. Festa lists a 5-year warranty, and notes that this model is not for unattended areas, so confirm the intended placement and warranty terms before choosing it.
Choose it for a new or replacement 4-inch setup when the fan's performance suits the existing design. If the system uses 3-inch pipe, compare the bundled Maverick option below and check whether its couplers match.
Festa AMG Maverick Radon Fan: Best for a 3-inch kit setup
- 260 CFM stated airflow
- Two 4 x 3 couplers
- Manometer and line cord kit included
- 5-year warranty
This Maverick bundle includes two 4 x 3 couplers, a manometer, a line cord kit and system labels. It can suit a 3-inch pipe setup when those parts match the system design.
Pros
- Includes couplers and manometer
- Festa recommends the Maverick for porous sub-slabs
- 5-year warranty
Cons
- Not for use in unattended areas
- Confirm the kit fits your existing layout
This Maverick bundle pairs the fan with two 4 x 3 couplers, a manometer, a line cord kit and system labels. Those extras can help when assembling a compatible 3-inch pipe setup, though the fan and system still need to be matched by performance.
The stated airflow is 260 CFM, and Festa recommends the Maverick for moderate-sized, newer homes or structures with porous sub-slabs. The brand lists a 5-year warranty and says the fans are not for unattended areas.
Check the kit contents against the parts you already have. If your current system needs a different coupling arrangement, buying a kit with mismatched parts may add work rather than save it.
Choose this bundle when the included couplers and monitoring parts suit your system. For a closer look at kits and their components, read our best radon mitigation fan kit guide.
Rysmirs 2 Speed Radon Fan: Best for selectable airflow
- Two speeds: 240 and 168 CFM
- 4-inch size
- Indoor or outdoor installation
- 45 dB stated noise level
The two speed settings let you select between stated airflow levels of 240 and 168 CFM. Consider it when a compatible 4-inch system needs selectable operation.
Pros
- Two stated airflow settings
- Indoor or outdoor use
- 4-inch size
Cons
- Check airflow needs against system pressure
- Switching speeds involves changing wire connections
The Rysmirs is the clearest choice here if you want two selectable airflow settings in a 4-inch fan. Its stated levels are 240 CFM and 168 CFM, so it offers a choice between higher and lower airflow that may suit some compatible system designs.
The brand describes indoor and outdoor use and an IP67 waterproof rating. It also states noise levels of 45 dB on high and 32 dB on low, but those are manufacturer figures and may not reflect sound at your installation location.
Changing speeds involves switching wire connections. Don't change fan settings to chase lower noise or energy use without confirming the radon system still performs as intended.
Choose it when a qualified system plan calls for selectable airflow. Our multi-speed radon fan guide explains the tradeoffs to consider before choosing a two-speed model.
Fantech Rn2 Radon Mitigation Fan: Best for 4.5-inch duct systems
- 4.5-inch standard pipe size
- 123 CFM at 0.50 in. static pressure
- 58 watts
- Indoor, outdoor and wet-location mounting
The Rn2 is sized for 4.5-inch duct and has a stated airflow point of 123 CFM at 0.50 in. static pressure. Match its performance curve to the system before choosing it.
Pros
- Defined 4.5-inch pipe size
- Published airflow at a stated pressure
- Suitable for wet locations
Cons
- Not a direct fit for 3-inch or 4-inch pipe
- Confirm the system's pressure requirements
Fantech's Rn2 is designed for 4.5-inch duct, making it a distinct option from the 3-inch and 4-inch fans above. The brand states 123 CFM at 0.50 in. static pressure and 20 CFM at 1.75 in. static pressure, which gives more context than a single free-air CFM number.
The Rn2 uses a vibration-welded seam intended to keep the housing leak-proof. Fantech says it can be mounted indoors, outdoors and in wet locations.
This is a poor match if you're trying to connect it directly to a system built for 3-inch or 4-inch pipe without a design-approved transition. Compare the stated pressure points with your system's needs before choosing it.
Choose the Rn2 when your duct size and system performance requirements align. If your system has 3-inch pipe, our guide to radon fans for 3-inch pipes covers options sized for that setup.
Dcfairfan 4x4 inch Radon Installation Fan Kit: Best for a 4-inch replacement kit
- Two 4 x 4 rubber couplers
- Manometer included
- IP67 waterproof claim
- Indoor or outdoor installation
This kit bundles a 4-inch fan with two 4 x 4 couplers and a manometer. Its included parts may simplify a compatible replacement, but confirm the fan and system requirements first.
Pros
- Includes couplers and manometer
- Indoor or outdoor use stated
- 3-year warranty stated
Cons
- Verify dimensions and electrical requirements
- Manufacturer airflow and noise claims need context for your system
The Dcfairfan 4 x 4 kit bundles a fan with two 4 x 4 rubber couplers and a manometer. For a replacement, those parts may be useful if they fit the existing connections and you need a monitoring gauge.
Dcfairfan states 260 CFM, an 85-watt motor and noise below 50 dB. It also claims an IP67 waterproof rating and a 3-year warranty; confirm the current warranty terms and installation requirements before buying.
The 4 x 4 couplers are the main fit detail to check. Don't assume that every 4-inch system uses the same connection or that the fan will match its pressure needs.
Choose this kit when its couplers, fan performance and installation conditions fit the system. The 4-inch radon fan guide compares more options for systems built around 4-inch pipe.
RadonAway 23011-1 XP201 Radon Mitigation Fan: Best for a 4-inch general-purpose replacement
- 4-inch model
- Seams sealed to inhibit radon leakage
- ETL listed
- Indoor or outdoor use
The XP201 is a 4-inch RadonAway fan with a low-profile design and a water-hardened, thermally protected motor. It may suit a replacement when its performance and connections match the installed system.
Pros
- Designed for radon mitigation
- Seams sealed to inhibit leakage
- ETL listed
Cons
- Confirm airflow and pressure match
- Check electrical connection and mounting needs
RadonAway's XP201 is a 4-inch fan designed for residential and commercial use. Its low-profile design can help when space around the system is limited, and the brand says its water-hardened, thermally protected motor is built for radon applications.
The XP201 has seams sealed to inhibit radon leakage and is ETL listed. RadonAway also describes it as suitable for indoor or outdoor use, but check the installation instructions and local electrical requirements for your setup.
This model can be a sensible replacement candidate when the existing system uses compatible 4-inch connections. Confirm airflow and pressure needs before treating it as a direct substitute for a different fan model.
Choose it when you want a 4-inch RadonAway model and the system design supports it. If you're troubleshooting a stalled system first, read why a radon mitigation fan may not be working.
Dcfairfan 4x3 Inch Radon Mitigation System Kit: Best for a 3-inch kit with a manometer
- Two 4 x 3 rubber couplers
- Manometer included
- 260 CFM stated airflow
- Indoor or outdoor installation
This kit includes two 4 x 3 couplers and a manometer for a compatible 3-inch system. Check the fan's dimensions, wiring and system performance needs before treating it as a drop-in replacement.
Pros
- Includes couplers and manometer
- Indoor or outdoor use stated
- 3-year warranty stated
Cons
- Verify compatibility with existing pipe and wiring
- Airflow claim does not show system pressure
This Dcfairfan kit includes two 4 x 3 rubber couplers and a manometer with a 4-inch fan. It may suit some 3-inch pipe layouts where the kit's couplers match, but confirm the exact connection size and system performance requirements.
Dcfairfan states 260 CFM, an 85-watt motor and noise under 50 dB. The brand also claims an IP67 waterproof rating and a 3-year warranty, so verify the installation directions and warranty details before ordering.
The included manometer can help you observe system pressure, but it doesn't measure radon in the home. Use a radon monitor or test to check whether the mitigation system is keeping indoor levels where you want them.
Choose it for a compatible setup when the included parts are useful. For a different 3-inch option, compare the best radon fan choices for 3-inch pipes.
RadonAway 23005-1 GP501 Radon Mitigation Fan: Best for 3-inch duct options
- 3-inch duct diameter
- Can be used with 3-inch or 4-inch pipe
- Mounts on duct pipe or integral flange
- Five-year limited manufacturer warranty
The GP501 is a 3-inch fan that can be used with 3-inch or 4-inch pipe. Its duct and mounting options make it worth checking for a compatible replacement or new system.
Pros
- Options for 3-inch and 4-inch pipe
- Pipe or flange mounting
- Five-year limited warranty
Cons
- Confirm airflow and pressure for your system
- Check electrical connection before buying
The GP501 offers a 3-inch duct diameter and can be used with 3-inch or 4-inch pipe, according to its product details. It mounts on duct pipe or with an integral flange, which gives installers more than one mounting approach to consider.
RadonAway says GP Series fans are designed for radon mitigation and offer a range of performance options. The GP501 has a five-year limited manufacturer warranty, but the airflow and pressure data aren't included here, so compare its performance requirements with the system before selecting it.
Its pipe compatibility makes it worth considering for a replacement where the existing fan is a GP501 or the installation design calls for this model. A similar diameter alone doesn't confirm that another fan will be an equivalent replacement.
Choose it for a 3-inch duct option when the system design supports it. If you're comparing other sizes, start with what size radon fan you need.
xyfair PF-100: Best for a lower-airflow 4-inch option
- 190 CFM stated airflow
- 4-inch size
- IP67 waterproof claim
- 8-year limited warranty stated
The PF-100 is a 4-inch fan with 190 CFM stated airflow and an 8-year limited warranty. Compare its performance to your system's pressure requirements before choosing it.
Pros
- 4-inch size
- Indoor or outdoor use stated
- 8-year limited warranty stated
Cons
- Lower stated airflow than several picks here
- Confirm electrical and mounting compatibility
The xyfair PF-100 is a 4-inch fan with 190 CFM stated airflow. That lower airflow figure may fit a system designed for it, but it shouldn't be chosen solely because the fan is quieter or appears to match the pipe.
The brand states an IP67 waterproof rating, indoor or outdoor use, and an 8-year limited warranty with full replacement. It also describes a sealed case and thermal protection, so check the terms and required installation details for your location.
This option has a mounting bracket and can be mounted in different positions, according to the product details. Confirm the fan's connections, pressure performance and electrical fit before using it as a replacement.
Choose it when the system calls for its airflow and the installation requirements match. For a noisy system, see our guide to radon mitigation fan noise before assuming the fan itself is the cause.
How do you match a radon fan to an existing system?
Match a replacement by model, pipe size, fan location, electrical connection and pressure requirements. A fan with the same duct diameter can still have a different performance curve or connection setup.
Take clear photos of the old fan label, wiring and pipe connections before shopping. If the label is missing, measure the pipe's inside or outside diameter as appropriate and ask a qualified radon professional to identify the system requirements.
When replacing a fan, plan the work around safe electrical isolation and the system's instructions. Our guide to replacing a radon mitigation fan covers the questions to resolve before starting.
A replacement can also change system noise. Check the radon mitigation fan location guide to understand how placement affects sound, weather exposure and access for maintenance.
Does a higher CFM rating mean a better radon fan?
No, a higher CFM rating does not guarantee better results in your system. Static pressure, pipe length, bends, suction pit design and sub-slab material all affect the airflow a fan can move after installation.
Compare airflow at a stated pressure when that information is available. The Fantech Rn2, for example, gives airflow at two pressure points, while a single CFM figure for another fan may not make a direct comparison possible.
The fan also needs to maintain the pressure field beneath the slab. Keep monitoring indoor radon after any system change, and arrange a follow-up test if the system has been altered or performance is uncertain.
What should you check before installing a new fan?
Check the fan's approved location, pipe fit, wiring, discharge route and maintenance access before installing it. Local codes and the mitigation design may set requirements that product features alone don't cover.
A radon fan is part of an active soil depressurization system. It draws soil gas from below the foundation and exhausts it outside, so the piping, sealing and discharge point matter along with the fan.
If you're planning a new setup, read the radon fan installation guide and have a qualified professional confirm the design where needed. Keep a monitor or test plan in place after installation to check indoor radon levels.
More guides on this topic
- Can I Turn Off My Radon System?
- Do Radon Fans Run All the Time?
- How to Maintain a Radon Remediation System
Which radon mitigation fan should you choose?
Choose the Festa AMG Maverick for a compatible 4-inch system where its stated airflow and installation limits fit. For a 3-inch pipe setup, compare the Maverick kit or RadonAway GP501, and for 4.5-inch duct, check whether the Fantech Rn2 matches the pressure requirements.
For a replacement, prioritize exact system compatibility over a higher airflow claim or extra kit parts. Keep the fan running as designed, watch the system gauge, and follow up with radon testing after installation or service.
Our top 3 picks at a glance
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Frequently asked questions
How do I choose the right radon mitigation fan?
Start with your system's pipe size, fan location, airflow needs and static pressure. A fan's CFM figure alone doesn't show how it will perform against resistance in your piping and suction pit.
If replacing a fan, record its model, pipe connections and wiring before shopping, then compare those with the new fan's requirements.
Can I replace my radon fan with a higher-airflow model?
A higher CFM rating does not automatically make a fan a good replacement. The system's pipe layout, suction point and pressure needs affect fan selection, so a different model can change how the system operates.
Match the replacement to the mitigation design and have a qualified radon professional review changes when you're unsure.
Are radon fan kits better than buying a fan alone?
A kit can save separate parts shopping when its couplers and monitoring parts fit your setup. The Festa and Dcfairfan kits here include couplers and a manometer, while a fan-only option may be enough if your existing parts are sound.
Check every connection size and included part before you buy.
Should a radon mitigation fan go indoors or outdoors?
That depends on the fan's approved use and the system layout. Several picks here state indoor or outdoor use, while installation location also affects noise, weather exposure and access for service.
See the radon mitigation fan location guide before deciding where a fan can go.
Do radon fans need to run all the time?
Active soil depressurization systems are generally designed to run continuously, so don't switch a fan off as a routine energy-saving step. If the fan stops or you suspect a problem, arrange a system check and keep monitoring radon levels.
Read more about whether radon fans run all the time.
