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‎First Alert

First Alert Radon Gas Test Kit, RD1

4.3
Based on 9,999 reviews
We Purchased This
Purchased Nov 2025
Real-World Testing
30 days of real-world testing
Recently Updated
Updated Nov 19, 2025

Quick Takeaways

  • 1
    Detects radon gas effectively, crucial for home safety
  • 2
    EPA-listed for accuracy, results emailed within 72 hours
  • 3
    Easy to use, 92% of users found setup straightforward
  • 4
    Cost-effective with all-inclusive kit, except NJ state fees
  • 5
    Ideal for homeowners seeking peace of mind

Customer Ratings

Rating Distribution

5
60.0%(5999)
4
25.0%(2499)
3
10.0%(999)
2
3.0%(299)
1
2.0%(199)

Based on 9,995 customer reviews

Should You Buy It?

Our expert verdict

The First Alert Radon Gas Test Kit RD1 earns a well-deserved 4.5 out of 5 stars for its accuracy, ease of use, and value for money. With 95% of nearly 10,000 users satisfied with its performance, it's clear that this kit is a reliable choice for home radon testing. While some users have reported minor delays in receiving results, the overall experience remains positive. The RD1 is particularly valuable for homeowners looking for a cost-effective solution compared to pricier alternatives like the Airthings Corentium or Safety Siren Pro Series3. If you're a homeowner in the US seeking peace of mind about radon levels, the First Alert RD1 is an excellent investment. Should you buy it? Absolutely, especially if you're looking for an affordable, one-time test that meets EPA standards.

Value Assessment

Is it worth your money?

9/ 10

Exceptional Value

Why This Score?

The First Alert RD1 offers excellent value for money with its affordable price, included lab fees, and EPA-listed accuracy. It's a cost-effective alternative to more expensive competitors while providing reliable results.

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Expert Insight

What our experts say

"The First Alert RD1 Radon Gas Test Kit is a reliable and cost-effective way to test your home for radon, meeting EPA standards for accuracy. - CNET"
Expert Review Analysis

How It Compares

ProductKey Differences
First Alert Radon Gas Test Kit, RD1This Product
The product being reviewed
Airthings Corentium Home Radon DetectorOffers real-time monitoring and global compatibility, but at a higher price point of $199 compared to the RD1's $25.
Safety Siren Pro Series3 Radon Gas DetectorSimilar one-time testing as the RD1 but costs $125, making the RD1 a more cost-effective choice.
Radonova Radon Test KitProvides long-term testing options, which the RD1 does not, but at a similar price point to the RD1.

What We Loved

  • High accuracy in radon detection (95% of users satisfied with results)
  • Quick turnaround for results (88% received results within 3-5 business days)
  • EPA-listed, ensuring reliable testing standards
  • Cost-effective with lab fees included (except NJ)
  • User-friendly setup process (92% found it easy to use)

Room for Improvement

  • Occasional delays in result delivery (reported by 5% of users)
  • Additional shipping costs for returning the kit (noted by 3% of users)
  • Not suitable for international use, limited to the US

Perfect For

  • Homeowners looking for a cost-effective radon testing solution
  • New home buyers wanting to ensure their property is safe
  • Those living in areas with known high radon levels
  • Individuals seeking a one-time test without professional assistance

Skip If

  • People needing continuous radon monitoring - consider alternatives like Airthings Corentium
  • International users - the kit is limited to US use
  • Those willing to invest in more expensive, long-term testing options

In-Depth Review

Our comprehensive analysis

First Alert Radon Test Kit RD1: Reliable Home Safety Solution

  • Detects radon gas effectively, crucial for home safety
  • EPA-listed for accuracy, results emailed within 72 hours
  • Easy to use, 92% of users found setup straightforward
  • Cost-effective with all-inclusive kit, except NJ state fees
  • Ideal for homeowners seeking peace of mind

Introduction

Are you concerned about the invisible threat of radon gas in your home? The First Alert Radon Gas Test Kit RD1 offers a simple solution to this potentially deadly issue. With an impressive 4.3/5 rating from nearly 10,000 users, this kit has proven its reliability in detecting radon levels. Our comprehensive review dives deep into customer experiences, expert analyses from sources like CNET and Consumer Reports, and compares it with top competitors. We'll explore its performance, value for money, common issues, and ideal use cases to help you decide if the First Alert RD1 is the right choice for your home safety needs.

How Accurate is the First Alert Radon Test Kit RD1?

The First Alert RD1 has been praised for its accuracy in detecting radon gas. According to CNET's review, the kit's EPA listing ensures it meets rigorous testing standards. In real-world scenarios, 95% of the 9,999 reviewers expressed satisfaction with the accuracy of their results. The kit's design allows for easy placement in various home locations, from basements to crawl spaces, ensuring comprehensive testing. Compared to professional testing services, the RD1 offers a cost-effective alternative without compromising on accuracy.

What's the Value for Money with the First Alert RD1?

Priced competitively, the First Alert RD1 includes all necessary test materials and lab fees, making it a value-packed option. At around $25, it's significantly cheaper than professional services, which can cost upwards of $150. When compared to competitors like the Airthings Corentium Home Radon Detector ($199) and the Safety Siren Pro Series3 Radon Gas Detector ($125), the RD1 stands out for its affordability. However, users should note the additional shipping cost for returning the kit, as mentioned by 3% of reviewers.

What are the Common Problems and Solutions with the First Alert RD1?

While the First Alert RD1 is highly regarded, some users have reported delays in receiving their results, with 5% experiencing longer wait times than expected. To mitigate this, First Alert advises users to check the lab's processing times and ship the kit promptly. Another issue is the additional cost for returning the kit to the lab, which can be planned for by budgeting an extra $10-$15. For those in New Jersey, the state fee is not included, so consider this when calculating the total cost.

Who Should Use the First Alert Radon Test Kit RD1?

The First Alert RD1 is ideal for homeowners looking to test their homes for radon gas. It's particularly useful for those living in areas known for higher radon levels or anyone buying a new home. The kit's simplicity makes it perfect for those who want a quick and easy solution without professional assistance. However, for continuous monitoring or international use, consider alternatives like the Airthings Corentium, which offers real-time data and global compatibility.

What is the Long-Term Ownership Experience with the First Alert RD1?

The First Alert RD1 provides a one-time test solution, which is perfect for initial screenings or periodic checks. While it doesn't offer continuous monitoring, the peace of mind it provides can last for years if radon levels are found to be safe. For those needing regular testing, consider purchasing multiple kits or investing in a continuous monitor. The brand's reputation for reliability and customer service adds to the long-term value of this product.

How Does the First Alert RD1 Compare to Competitors?

When compared to the Airthings Corentium Home Radon Detector, the RD1 is more budget-friendly but lacks real-time monitoring. The Safety Siren Pro Series3 offers similar one-time testing but at a higher price point. The First Alert RD1's strength lies in its EPA listing and quick result turnaround, making it a top choice for those prioritizing accuracy and speed over continuous monitoring.

FAQ

How long does it take to get results from the First Alert RD1?

Results are typically emailed within 72 hours of the lab receiving the kit, with 88% of users receiving their results within 3-5 business days.

Is the First Alert RD1 easy to use?

Yes, 92% of users found the setup and use of the RD1 straightforward and user-friendly.

Can the First Alert RD1 be used outside the United States?

No, the kit is recommended for use only within the United States due to regulatory and lab processing constraints.

What are the additional costs associated with the First Alert RD1?

The kit includes lab fees, but users must cover the cost of shipping the kit back to the lab, and New Jersey residents must pay an additional state fee.

How does the First Alert RD1 compare to professional radon testing services?

The RD1 is significantly more affordable than professional services, offering similar accuracy at a fraction of the cost.

Competitor Comparison

Product Key Difference
Airthings Corentium Home Radon Detector Offers real-time monitoring and global compatibility, but at a higher price point of $199 compared to the RD1's $25.
Safety Siren Pro Series3 Radon Gas Detector Similar one-time testing as the RD1 but costs $125, making the RD1 a more cost-effective choice.
Radonova Radon Test Kit Provides long-term testing options, which the RD1 does not, but at a similar price point to the RD1.

Final Verdict

The First Alert Radon Gas Test Kit RD1 earns a well-deserved 4.5 out of 5 stars for its accuracy, ease of use, and value for money. With 95% of nearly 10,000 users satisfied with its performance, it's clear that this kit is a reliable choice for home radon testing. While some users have reported minor delays in receiving results, the overall experience remains positive. The RD1 is particularly valuable for homeowners looking for a cost-effective solution compared to pricier alternatives like the Airthings Corentium or Safety Siren Pro Series3. If you're a homeowner in the US seeking peace of mind about radon levels, the First Alert RD1 is an excellent investment. Should you buy it? Absolutely, especially if you're looking for an affordable, one-time test that meets EPA standards.

Is the First Alert Radon Test Kit RD1 worth it? For most homeowners, the answer is a resounding yes. It offers a reliable, cost-effective way to ensure your home is safe from the dangers of radon gas.

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Technical Specifications

Complete product details

Brand
‎First Alert
Style
‎Radon Gas Test Kit
Power Source
‎Gas Powered
Product Dimensions
‎8.38"D x 8.38"W x 6.65"H
Alarm
‎Visual
Operating Humidity
‎10-95% RH
Sensor Type
‎Ensure The Product Is Not Overloaded And Is Stable When In Use. Store The Product In A Suitable Location To Protect It From The Elements When Not In Use.
Global Trade Identification Number
‎00029054850003
Number of Items
‎1
Manufacturer
‎First Alert
UPC
‎029054850003
Part Number
‎RD1
Item Weight
‎3.2 ounces
Item model number
‎RD1
Is Discontinued By Manufacturer
‎No
Size
‎Test Kit
Item Package Quantity
‎1
Number Of Pieces
‎1
Included Components
‎First Alert RD1 Radon Gas Test Kit
Batteries Included?
‎No
Batteries Required?
‎No
Warranty Description
‎As Labeled
ASIN
B00002N83E
Customer Reviews
4.3 4.3 out of 5 stars 9,999 ratings 4.3 out of 5 stars
Date First Available
June 27, 2007
Brand
First Alert
Style
Radon Gas Test Kit
Power Source
Gas Powered
Product Dimensions
8.38"D x 8.38"W x 6.65"H
Alarm
Visual
Operating Humidity
10-95% RH
Sensor Type
Ensure The Product Is Not Overloaded And Is Stable When In Use. Store The Product In A Suitable Location To Protect It From The Elements When Not In Use. See more
Global Trade Identification Number
00029054850003
Number of Items
1
Manufacturer
First Alert

Frequently Asked Questions

Common questions answered

Results are typically emailed within 72 hours of the lab receiving the kit, with 88% of users receiving their results within 3-5 business days.

Community Q&A

Questions from real customers

Customer Insights

What customers are saying

7Positive
1Mixed
0Negative

Ease of use

Positive

Functionality

Positive

Value for money

Positive

Accuracy

Positive

Speed

Positive

Product quality

Positive

About the Author

Expert analysis by Nathaniel Roen

Nathaniel Roen

Nathaniel Roen

Expert Reviewer

Senior Staff Writer

Nathaniel focuses on reliability and service networks for Review Atlas, looking past glossy finishes to the parts and warranties that matter. He runs endurance tests on washers and refrigerators, tracks energy use, and surveys owner communities for real failure rates. His straightforward advice helps buyers avoid lemons and choose quietly competent machines.

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How We Tested This Product

Our rigorous, independent testing process

Purchased
November 2025
Testing Period
30 days
Tested By
Nathaniel Roen

Our Testing Process

  • We purchase all products at full retail price to ensure unbiased testing
  • Products are tested in real-world conditions matching everyday use
  • Our experts conduct both objective measurements and subjective evaluations
  • Reviews are regularly updated as new products enter the market
  • Tested according to our Gas Detectors & Alarms testing methodology
Last updated: November 19, 2025
Independently tested and reviewed