The Testo 317-3 CO Detector is a compact, fast-response tool designed for HVAC engineers and gas service technicians who need reliable on-site safety checks. It provides instant alerts when carbon monoxide is detected in heating systems, flues or ambient air, helping you protect both property and people.
Why HVAC engineers rely on the 317-3 every day
With one-hand operation and no warm-up time, the 317-3 delivers CO readings in seconds. Its visual and audible alarms make it easy to detect leaks even in noisy plant rooms and the flexible probe helps reach difficult testing points. Lightweight, portable and built for professional environments, it’s a practical safety essential for every engineer’s toolkit.
Order today to enjoy free delivery, expert support and our 90-day satisfaction guarantee. Need advice? Our team is here to assist you.
Why choose Instrotech for your electrical test equipment?
With over 40 years’ experience supporting UK electricians, technicians and engineers, Instrotech is your trusted partner for quality tools and expert service. When you purchase from us, you benefit from:
Free UK shipping on all orders
Access to our knowledgeable technical support team
Available calibration services to maintain safety compliance
A 90-day money-back guarantee for complete peace of mind
We’re committed to helping you work safely and efficiently with industry-leading products and ongoing support.
