AprilAire Radon Mitigation Fan Kit with ARN25F Fan
Product Highlights
6"
120v
5 Year Warranty
Description
The AprilAire ARN25K Radon Mitigation Kit includes the ARN25F Radon Mitigation Fan, an ARNALM Radon System Alarm, an ARN05M Manometer, and coupling(s). The AprilAire ARN25F Radon Mitigation Fan is ideal for most sub-slab radon mitigation systems with a basement or slab size between 1500 and 2500 square feet.
Product Features:
- Energy efficient
- Ultra-quiet operation
- Meets all electrical code requirements
- Housing that stays white
- Water-hardened motorized impeller
- Seams sealed to inhibit radon leakage
- ETL Listed - for indoor or outdoor use
- Thermally protected motor
- Rated for commercial and residential use
- 6" Fan Duct Diameter
- 95-139 watts
- 5-year warranty
AprilAire is on a mission to make homes healthy. We believe everyone deserves Healthy Air and envision a future with Healthy Air in every home.
At AprilAire, our mission has always been to make homes healthy through intuitive design and professional-grade solutions — because healthy homes are the foundation for healthy people, families, and communities.
Detailed Overview: AprilAire ARN25K Radon Mitigation Kit
Technical Specifications
| Parameter | Value |
|---|---|
| Fan Model | ARN25F |
| Duct Diameter | 6 inches |
| Voltage | 120V |
| Power Draw | 95–139 watts |
| Recommended Coverage | 1,500–2,500 sq. ft. basement/slab area |
| Certification | ETL Listed (indoor/outdoor rated) |
| Motor | Thermally protected, water-hardened impeller |
| Warranty | 5-year manufacturer warranty |
| Kit Includes | ARN25F fan, ARNALM system alarm, ARN05M manometer, coupling(s) |
How a Radon Mitigation System Works
A sub-slab radon mitigation system uses negative pressure to intercept radon gas before it enters your living space. A PVC pipe is routed from beneath the concrete slab (or crawlspace) up through the house and out above the roofline. The ARN25F fan continuously draws soil gas from underneath the foundation and safely vents it outdoors, keeping indoor radon concentrations below the EPA action level of 4 pCi/L.
The included ARNALM alarm monitors system pressure and immediately alerts you if the fan fails or airflow is interrupted — so a malfunction never goes unnoticed. The ARN05M manometer provides a simple visual gauge to confirm the system is actively pulling vacuum at all times.
Why Choose the AprilAire ARN25F
- Ultra-quiet operation — designed to run continuously, 24/7, without disrupting your household
- Energy efficient — low wattage draw keeps operating costs minimal for round-the-clock use
- Corrosion- and radon-leak-resistant housing — sealed seams prevent gas leakage back into the fan compartment; housing stays white and doesn't yellow over time
- Rated for residential and commercial applications — suitable for homes, schools, and commercial buildings
- Backed by a full 5-year warranty for long-term peace of mind
When Do You Need This System?
If a radon test — such as our Airthings Wave Radon 2950 or a short-term lab test — shows levels at or above 4 pCi/L, the EPA recommends installing an active mitigation system. Homes with a basement, crawlspace, or slab-on-grade foundation are especially prone to radon intrusion through foundation cracks, sump pits, and utility penetrations.
Professional Installation with Emergency Plumbing
Proper radon mitigation isn't a DIY project — fan placement, duct routing, sealing, and pressure testing all affect system performance. Our licensed technicians will:
- Evaluate your foundation type and radon entry points
- Design a sub-slab depressurization layout suited to your home's size and layout
- Install the ARN25F fan, alarm, and manometer per AprilAire and EPA/AARST guidelines
- Perform post-installation testing to confirm radon levels have dropped below the action level
- Provide documentation for real estate transactions or insurance purposes, if needed
We also offer the Fantech RN Series 4EC-3 Inline Radon Fan as an alternative option for homes with different sizing or noise requirements.
Frequently Asked Questions
How long does installation take?
A typical single-fan sub-slab system can usually be installed in a single day, depending on foundation access and duct routing.
Will I hear the fan running?
No — the ARN25F is engineered for ultra-quiet, continuous operation and is typically installed in an attic, garage, or exterior wall where noise is a non-issue.
Do I need to retest after installation?
Yes. We recommend a follow-up radon test 24–48 hours after installation, and periodic retesting every 2 years or after any structural changes to the home.
High-Performance Sub-Slab Radon Depressurization & Air Protection
The Aprilaire Radon Mitigation Fan Kit featuring the ARN25F Fan is an industry-leading solution designed for continuous, heavy-duty active soil depressurization (ASD). Built specifically to tackle elevated radon gas levels in residential basements and slab foundations, the ARN25F delivers ultra-quiet, energy-efficient performance while pulling harmful radioactive soil gases out from beneath your foundation before they can enter your home. Call our certified radon mitigation specialists at (224) 754-1984 for professional installation or fan replacement:
Pro-Grade Suction Performance: Engineered to handle low-to-moderate airflow resistance, making it the ideal choice for medium-to-large home footprints with gravel or drainage tile sub-slabs.
Ultra-Quiet & Energy-Efficient Operation: Custom-balanced backward curved impellers minimize vibration noise while keeping electrical power consumption extremely low during 24/7 continuous duty.
Complete All-In-One Installation Kit: Includes the ARN25F inline centrifugal fan, flexible rubber couplings with vibration dampening, a U-tube manometer diagnostic gauge, and clear warning labels.
All-Weather UV-Resistant Housing: Thermally protected, water-sealed polycarbonate housing designed to withstand harsh Midwestern winter freezing and summer heat.
5-Year Manufacturer Warranty Protection: Backed by Aprilaire’s trusted HVAC & indoor air quality engineering standards.
Aprilaire ARN25F Radon Fan Technical Specifications
Designed for versatile mounting on exterior walls or unconditioned attic spaces:
Technical Parameter Performance & Specification Details System Benefit Fan Model & Type Aprilaire ARN25F Inline Centrifugal Radon Fan High static pressure suction for sub-slab soil gas extraction. Duct Size Compatibility Designed for 3" or 4" Schedule 40 PVC Vent Pipes Standard plumbing/radon pipe integration with included rubber couplings. Airflow Capacity (CFM) Up to 160+ CFM (at 0.0" w.g. static pressure) Fast, continuous displacement of soil gas beneath concrete slabs. Housing & Weather Seal Seamless, UV-Resistant Water-Tight Polycarbonate Shell Zero leak risk; built for outdoor exterior or attic mounting. Electrical Specs 120V / 60Hz / Low-Wattage Motor Continuous 24/7 run time with minimal impact on monthly electric bills. Included Kit Accessories Flexible Couplings, U-Tube Manometer, Labels Ensures full IEMA / EPA compliance upon professional installation.
Key Benefits of Installing an Aprilaire ARN25F Radon Mitigation System
Upgrading your home with a certified Aprilaire radon fan kit provides immediate benefits for your household safety and indoor air quality:
Dramatically Drops Radon Levels Below EPA Action Limits: Reduces soil gas concentration consistently below the 4.0 pCi/L EPA action threshold (often achieving < 1.5 pCi/L).
Reduces Basement Moisture & Musty Odors: Continuous vacuum pull draws damp soil vapor away from the foundation slab, helping keep basements drier and fresher.
Seamless Real Estate & Code Compliance: Meets all Illinois Emergency Management Agency (IEMA) and building code requirements for home sales and transfers.
Direct Replacement for Failed Legacy Fans: Easily replaces worn-out or noisy RadonAway, Fantech, or Tjernlund radon fans with matching pipe dimensions.
Our Professional Aprilaire ARN25F Installation & Replacement Service
Sub-Slab Pressure & Airflow Diagnostics: Assessing concrete slab porosity, drain tile connections, and existing PVC vent pipe configuration.
Precision Mounting & Rubber Coupling Alignment: Securing the ARN25F fan vertically on exterior walls or attic framing using flexible vibration-isolating couplings.
Airtight Pipe Fitting & Weather Seals: Sealed connections on 3" or 4" PVC vent lines extending above the roofline according to EPA discharge rules.
Diagnostic Manometer & Electrical Setup: Wiring weather-resistant power connections and mounting the fluid U-tube manometer on the basement suction pipe.
Post-Installation Performance Verification: Verifying vacuum suction differential pressure and initiating a post-mitigation radon re-test.
Frequently Asked Questions: Aprilaire ARN25F Radon Kit
Q: Can the Aprilaire ARN25F fan replace my old, noisy radon fan?
A: Yes. The ARN25F is a direct retrofit replacement for most standard 3" and 4" radon inline fans. Our technicians can replace a dead or noisy fan in under an hour.
Q: Where should the Aprilaire ARN25F radon fan be mounted?
A: According to national radon mitigation standards (AARST/NRPP), radon fans must be installed outside the living space—either on an exterior home wall or inside an unconditioned attic or garage—to ensure gas cannot leak back into living quarters.
Q: How do I know if my Aprilaire ARN25F fan is running properly?
A: Check the clear U-tube manometer attached to the indoor PVC pipe. If the colored fluid levels are offset (unequal height), the fan is actively creating vacuum suction. If the fluid levels are flat/equal, the fan has lost power or needs service.
Q: Is the Aprilaire ARN25F fan noisy during operation?
A: No. The ARN25F features custom-engineered impellers and includes rubber isolation couplings that absorb motor vibration, ensuring near-silent operation inside your home.
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