10 Best radon gas detectors of 2025

Save up to 37% off

Best Choice

1

Airthings
Airthings Corentium Home Radon Detector 223 Portable, Lightweight, Easy-to-Use, (3) AAA Battery Operated, USA Version, pCi/L

15% Off
Main highlights

Battery Operated Convenience
The first digital radon detector that operates on batteries, offering flexibility without needing an outlet.

Ideal for Home Monitoring
Perfect for continuous radon monitoring in homes, detecting daily fluctuations.

Accurate and Reliable
Praised for its accuracy and reliability, comparable to professional tests.
9.8

Exceptional

Our Rating
How do we rank?

Powerful technology We scan thousands of products and stores, analyzing reviews to find what matters most to users like you

Careful review Our team ensures quality, value, and fit based on real user feedback

Trusted insights AI and human analysis guide your decisions, reflecting real user priorities
Real users impact

Thousands of users trust our site daily

Based on millions of stores and reviews

Shoppers influence our rankings
Analyzing top stores
Value for Money

2

Airthings
Airthings 2950 Wave Radon - Smart Radon Detector with Humidity & Temperature Sensor – Easy-to-Use – Accurate – No Lab Fees – Battery Operated - Free App

37% Off
Main highlights

Continuous Monitoring and No Lab Fees
Provides long-term radon monitoring with direct smartphone results, eliminating lab fees.

Ideal for Year-Round Home Use
Perfect for continuous radon detection and monitoring in any home environment.

Highly Praised Smartphone Integration
Users appreciate the seamless smartphone app interface for detailed radon tracking.
Key specs
- Dimensions:4.7 x 4.7 x 1.4 inches
- Power:Battery-powered
- Sensor:Radon, humidity, temperature
- Battery Life:N/A
- Alarm:Color-coded visual indication
9.6

Exceptional

Our Rating

9.9
movability

9.7
Easy installation

9.5
Simple to use
3

First Alert
First Alert Radon Gas Test Kit, RD1
Main highlights

Simple and Safe Testing
The First Alert Radon Gas Test Kit offers an easy and safe way to test for radon levels, with quick results and clear instructions.

Ideal for U.S. Homes
Recommended for use within the United States, ensuring accurate results in local conditions.

User-Friendly Design
Customers praise the kit's straightforward setup and easy-to-follow instructions, making it accessible for all users.
Key specs
- Dimensions:8.38 x 6.5 x 8.38 inches
- Power:Gas Powered
- Sensor:Radon Gas Test Kit
- Battery Life:N/A
- Alarm:N/A
9.5

Excellent

Our Rating

8.7
Simple to use

8.4
Instruction

8.0
Precision
4

Airthings
Airthings Corentium Home Radon Detector 2350 Portable, Lightweight, Easy-to-Use, (3) AAA Battery Operated, USA Version, pCi/L

22% Off
Main highlights

Quick Results and Accuracy
Receive first radon measurement in 24 hours, accurate after 7 days.

Ideal for Home Monitoring
Perfect for long-term radon monitoring in homes, especially basements.

Praised Feature: Ease of Use
Customers appreciate its easy setup, reset, and understandable display.
Key specs
- Dimensions:12 x 7.5 x 2 inches
- Power:3 AAA batteries
- Sensor:Radon detector
- Battery Life:Approximately 2 years
- Alarm:N/A
9.3

Excellent

Our Rating
5

CHNADKS

Upgraded Portable Radon Detector, Audible & Visual Alarm, LCD Color Display, Long-Term Radon Concentration Monitoring for Home Basement, pCi/L or Bq/m³
9.0

Excellent

Our Rating
See Today’s Deals & Prices
6

LifeBasis
Life Basis Home Radon Detector, Portable Radon Tester for Home with Long and Short Term Radon Monitoring 0-500 pCi/L Range Battery Operated (Including Battery)

20% Off
Main highlights

Key Feature and Benefit
Battery-operated radon detector for continuous air quality monitoring.

Ideal Use Scenario
Perfect for home use to ensure safe radon levels.

Praised Feature
Accurate and easy-to-read display for radon levels.
Key specs
- Temperature:50 Degrees Celsius
- Humidity:95 percent
- TVOC:N/A
- HCHO:N/A
- CO2 Levels:N/A
8.8

Very Good

Our Rating

9.3
clearly written

8.7
Simple to use

8.0
Precision
7

WGRLIT

Digital Radon Detector - User-Friendly Desktop Device with HD LCD Display, 2-3 Years of Battery Life on 6-Hour Charge, 10-Year Sensor Lifespan, Perfect for Accurate Home and Office pCi/L Reading

20% Off
8.5

Good

Our Rating
8

AEGTEST

AEGTEST HOUND-3699 Radon Detector, 10-Minute Measurement Updates, Audible & Visual Alarm, Touchscreen Color Display, Long-Term Radon Concentration Monitoring for Home, pCi/L - Black

16% Off
8.4

Good

Our Rating
9

Kidde
Kidde Carbon Monoxide Detector, Propane, Natural, Methane, & Explosive Gas Alarm, Plug-In Wall with 9-Volt Battery Backup, Digital LED Display
Main highlights

Easy Installation with Battery Backup
Simply plug into a 120V outlet; 9V battery ensures operation during power outages.

Ideal for Gas and CO Monitoring
Perfect for homes with natural gas, propane, or potential CO leaks.

Highly Rated Audible Alarm
Customers praise the loud 85-decibel alarm for effective alerting.
8.1

Good

Our Rating

9.7
Noise level

9.5
Easy installation

9.5
clearly written
10

AEGTEST

AEGTEST HOUND-1085 Radon Detector, TFT LCD, Rechargeable, Compact Design, Long-Term Monitoring for Home & Basement, Easy to Use, Audible & Visual Alarms, pCi/L or Bq/m³ – Blue
8.0

Good

Our Rating

10 Best radon gas detectors of 2025

1

Airthings Corentium Home Radon Detector 223 Portable, Lightweight, Easy-to-Use, (3) AAA Battery Operated, USA Version, pCi/L

How do we rank?

How do we rank?

Analyzing top stores

2

Airthings 2950 Wave Radon - Smart Radon Detector with Humidity & Temperature Sensor – Easy-to-Use – Accurate – No Lab Fees – Battery Operated - Free App

9.9

9.7

9.5

3

First Alert Radon Gas Test Kit, RD1

8.7

8.4

8.0

4

Airthings Corentium Home Radon Detector 2350 Portable, Lightweight, Easy-to-Use, (3) AAA Battery Operated, USA Version, pCi/L

5

Upgraded Portable Radon Detector, Audible & Visual Alarm, LCD Color Display, Long-Term Radon Concentration Monitoring for Home Basement, pCi/L or Bq/m³

6

Life Basis Home Radon Detector, Portable Radon Tester for Home with Long and Short Term Radon Monitoring 0-500 pCi/L Range Battery Operated (Including Battery)

9.3

8.7

8.0

7

Digital Radon Detector - User-Friendly Desktop Device with HD LCD Display, 2-3 Years of Battery Life on 6-Hour Charge, 10-Year Sensor Lifespan, Perfect for Accurate Home and Office pCi/L Reading

8

AEGTEST HOUND-3699 Radon Detector, 10-Minute Measurement Updates, Audible & Visual Alarm, Touchscreen Color Display, Long-Term Radon Concentration Monitoring for Home, pCi/L - Black

9

Kidde Carbon Monoxide Detector, Propane, Natural, Methane, & Explosive Gas Alarm, Plug-In Wall with 9-Volt Battery Backup, Digital LED Display

9.7

9.5

9.5

10

AEGTEST HOUND-1085 Radon Detector, TFT LCD, Rechargeable, Compact Design, Long-Term Monitoring for Home & Basement, Easy to Use, Audible & Visual Alarms, pCi/L or Bq/m³ – Blue

Sign up and get exclusive special deals