Testo 317-3 Ambient CO Meter
by Testo
Highly sensitive ambient CO detector with adjustable alarms and up to 1,999 ppm measurement range for HVAC gas leak detection and safety.
6.1 - Good Media

Overview
The Testo 317-3 is a portable ambient CO meter with an extremely sensitive electrochemical sensor measuring carbon monoxide up to 1,999 ppm. It features adjustable audible and visual alarm thresholds for customized safety monitoring around gas appliances and heating systems. The compact design with belt clip makes it ideal for HVAC technicians performing walk-around CO safety checks in mechanical rooms, boiler plants, and residential basements.
FSH Score Breakdown
Customer Reviews
Key Features
| Feature | Value |
|---|---|
| Bluetooth Connectivity | ❌ |
| Data Logging | ❌ |
| Wireless Probes | ❌ |
| Mobile App Integration | ❌ |
All Features
| Feature | Value |
|---|---|
| Backlit Display | ✅ |
| Rechargeable Battery | ❌ |
| Auto Shutoff | ✅ |
| Cloud Data Upload | ❌ |
| USB Data Export | ❌ |
| Multi-Gas Detection | ❌ |
| Visual Alarm Indicator | ✅ |
| Max/Min Tracking | ✅ |
Pricing
- Model
- Custom
- Starting at
- Contact for pricing
Need a website for your HVAC business?
Full Stack HVAC builds professional contractor websites that generate leads. Purpose-built for HVAC companies.
Build Your Website →Similar CO Detectors Tools
Compare all →Other tools in the same category. Compare to find the best fit.