Unsure which analyser is best suited for you? Below is a short breakdown of both eligible models.

Why choose testo 327?

Testo’s 327 is the best value multifunction flue gas analyser on the market, offering premium quality at affordable prices. Robust & reliable, the testo 327 is the perfect companion for any heating engineer.

Robust & reliable

Best value flue gas analyser on the market

Easy menu navigation

Measures O2 & CO, will calculate ratio, CO2, and more

Hydrogen compatible (20%)

Testo IR Printer (advanced kits)

Why choose testo 300?

The testo 300 is wireless, efficient and offers smart functionality. Now with connection of up to 4 testo Smart Probes, a large 5” HD display with smart touch operation and option to send customer reports wirelessly, it couldn't be easier.

Large 5” HD colour touchscreen display

Email/Bluetooth customer reports

Connect up to 4 testo smart probes via USB Dongle

Connect up to 4 smart probes via USB Dongle

Hydrogen compatible (20%)

New Smart domestic & commercial kits available

Installing and servicing heat pumps?

This special offer is also available across our range of digital manifolds for heat pump servicing and installation. Testo digital manifolds offer easy operation and fast measurement, are compact, reliable and robust (IP54), with wireless measurement for uncomplicated documentation. Get your FREE water pump pliers when you purchase any testo 550i, testo 550s, testo 557s and All-NEW testo 570s digital manifold, featuring smart error analysis, logging functionality for long-term measurements and rechargeable battery.

Find out more: https://www.testo.com/en-UK/free-pliers Offers available through authorised Testo distributors only. Offers end 31.08.23. Terms & Conditions apply.