The Testo 440 CO₂ Kit with Bluetooth is a professional indoor air quality measuring solution designed for HVAC engineers, ventilation technicians and building maintenance professionals working on air conditioning and ventilation systems across commercial and residential environments. The testo 440 kit allows accurate measurement of CO₂ concentration, humidity, air temperature and pressure to help optimise indoor air quality and system performance.
Wireless IAQ Testing with Smart Probe Connectivity
Supplied with a Bluetooth CO₂ probe, the testo 440 enables wireless monitoring and documentation of key IAQ parameters directly from the measuring instrument. Structured measurement menus simplify HVAC commissioning, ventilation balancing and long-term air quality testing while Bluetooth connectivity and internal data storage support faster reporting and efficient diagnostics on-site.
Why do HVAC engineers use the testo 440 CO₂ Kit?
The testo 440 CO₂ Kit helps technicians assess indoor air quality quickly and accurately while supporting ventilation system adjustment and environmental monitoring. Its wireless probe system and expandable probe compatibility make it ideal for HVAC servicing, commissioning and maintenance work.
Order today to enjoy free delivery, expert support and our 90-day satisfaction guarantee. Need advice? Our team is here to assist you.
1 x Testo 440 Air Velocity & IAQ Measuring Instrument
1 x Bluetooth CO₂ Probe with Temperature and Humidity Sensor
Bluetooth Handle
Table Stand
USB Cable
Calibration Protocol
3 x AA Batteries
4 x AA Batteries
Basic Carry Case
User Documentation
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 orders over £99
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.
