Testo 320 Series
For frequent testing and troubleshooting of residential and light commercial furnaces, boilers, hot water heaters, and other combustion appliances, the Testo 320 ensures correct combustion efficiency and CO safety analysis, each and every time.
Testo 330 Series
For testing of commercial and industrial boilers, furnaces, and other combustion appliances, the Testo 330 measures O2, CO (up to 30,000 ppm), temperature, pressure, and other required combustion efficiency parameters. In addition, this flue gas analyzer has NOx upgradability, on-site printout capability, a large memory, and a graphic tuning chart to show ideal combustion efficiency.