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How Much Does Radon Fan Replacement Cost in 2025?
Normal Range: $110 - $600
The average radon fan replacement costs $300
How we get this data
Highlights
Average radon fan replacement costs range from $110 to $600.
Homeowners pay an average of $300 for a new radon fan installation.
Replacing a radon fan helps maintain protection against harmful radon gas.
Complex system overhauls can cost up to $300 for complete updates.
Proper installation ensures effective radon mitigation for your home.
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This article was created using automation technology and thoroughly fact-checked and edited by HomeAdvisor Editor Ryan Noonan.
On average, radon fan replacement costs between $110 and $600, with most homeowners paying an average of $300 for a complete replacement. Basic fan units start at $100, while comprehensive system overhauls can reach $3,000 for larger mitigation systems. Since radon presents serious health concerns, proper installation by qualified professionals ensures your system effectively reduces radon concentrations in your home.
Radon Fan Replacement Cost Factors
Radon fans are crucial components that extract harmful radon gas from beneath your home and vent it safely outside. When these fans fail, radon levels can increase rapidly indoors. How much you’ll pay for a replacement fan depends on a variety of factors. Here’s a closer look at how your total breaks down.
Type of Fan
Different radon fan configurations are available based on your home's needs:
| Fan Type | Average Cost |
|---|---|
| Standard inline | $100–$350 |
| Low-profile | $150–$500 |
| Passive system booster | $60–$110 |
Standard inline fans are common in most installations, while low-profile models offer a more discreet appearance. Passive system boosters provide minimal enhancement for passive radon systems.
Ongoing Costs
Each fan type has different operating costs:
| Fan Type | Average Annual Electricity Cost |
|---|---|
| Low suction | $20–$35 |
| Moderate suction | $60–$150 |
| High suction | $100–$180 |
The ongoing electricity expense is an important consideration when selecting a fan. Higher-powered units remove radon more effectively but consume more electricity over time.
Fan Size
Fan size primarily relates to suction power rather than physical dimensions. The right size depends on your system's design and soil characteristics.
| Fan Size | Average Cost Range (Fan Only) |
|---|---|
| Low suction | $100–$230 |
| Moderate suction | $130–$250 |
| High suction | $150–$350 |
The construction of your radon mitigation system and the soil characteristics beneath your home determine which fan size is appropriate. Replacing your fan with the correct size is essential for maintaining system effectiveness.
Replacement Frequency
Radon fans last between five and 10 years while running continuously. When a fan begins to fail, radon levels may increase in your home without warning. If you notice unusual noises from your fan or see concerning readings on your system monitor, your fan may need immediate replacement. Regular inspections can help identify potential issues before they lead to elevated radon exposure.
Materials and Parts
Fan replacement often requires additional components beyond the fan unit. These extra parts, including pipe fittings, adhesives, adapters, or clamps, cost between $10 and $50 total. These additional materials ensure proper system function and prevent air leaks that could compromise radon reduction.
Labor
Professional radon fan installation costs between $50 and $110 per hour. The labor portion of your bill will be included in the overall project estimate. Rates vary based on your location and the technician's experience level. If your fan is in a difficult-to-access location, you might incur additional labor charges.
Location
The placement of your radon fan affects replacement complexity. Fans installed outdoors at accessible heights are often easier and less expensive to replace. Attic or garage installations may require more time and effort, potentially increasing costs. Your technician may charge up to an additional hour of labor for fans in hard-to-reach locations.
Radon Fan Replacement Add-Ons
While replacing your radon fan, consider these related services:
Radon testing: $145–$715
Indoor air quality testing: $290–$585
Foundation repairs: $2,220–$8,115 if structural issues allow radon entry
Crawlspace encapsulation: $5,000–$15,000 for persistent moisture or radon problems
Radon Fan Replacement vs. Repair
While minor issues might seem repairable, replacing a radon system fan is often more cost-effective than attempting repairs. The fan must be removed from the system for either option, and new fans come with manufacturer warranties lasting from one to five years. Since the cost of diagnosing and fixing problems often equals or exceeds replacement costs, most homeowners opt for a new fan rather than repairing the existing one.
Key indicators that replacement is necessary:
The fan is approaching or past its expected five to 10-year lifespan
Unusual noises or vibrations from the unit
Decreased system effectiveness
Elevated radon levels in recent tests
Physical damage to the fan housing
DIY Radon Fan Replacement vs. Hiring a Pro
While experienced DIYers with knowledge of radon systems might tackle fan replacement themselves, most homeowners should consider hiring a local radon specialist for professional installation. Radon mitigation is critical for health safety, and improper installation could leave your family exposed to harmful gas. The reasonable cost of professional replacement provides peace of mind that the system will function correctly.
For those considering DIY replacement, understand that you'll need:
Electrical knowledge for safe disconnection and reconnection
Understanding of proper sealing techniques
Ability to access the fan location safely
Knowledge of system function and testing
Because of the system's importance and the risk associated with radon exposure, hiring a qualified radon expert is the safest approach for most homeowners.
Tips to Reduce Cost While Replacing a Radon Fan
Consider these cost-saving strategies to make your radon fan replacement more budget-friendly:
Compare quotes from multiple local radon professionals: Pricing can vary between service providers.
Ask about warranty options: Longer coverage may provide better long-term value.
Consider energy efficiency: Lower-powered fans may cost less to operate if suitable for your home.
Maintain your system regularly: Proper care can extend fan life and postpone replacement.
How HomeAdvisor Gets Its Cost Data
No place is more important than your home, which is why HomeAdvisor connects homeowners with local pros to transform their houses into homes they love. To help homeowners prepare for their next project, HomeAdvisor provides readers with accurate cost data and follows strict editorial guidelines. After a project is complete, we survey real customers about the costs to develop the pricing data you see, so you can make the best decisions for you and your home. We pair this data with research from reputable sources, including the U.S. Bureau of Labor Statistics, academic journals, market studies, and interviews with industry experts—all to ensure our prices reflect real-world projects.
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