Make light work of servicing jobs this Winter.
With Testo digital manifolds
Available from participating distributors.
Free gift offer valid until: 30/04/2025
Make light work of boilers this winter.
with Testo flue gas analysers
Available from participating distributors.
Free gift offer valid until: 30/04/2025
Make light work of servicing jobs this Winter.
With Testo digital manifolds
Available from participating distributors.
Free gift offer valid until: 30/04/2025
The HVAC/R world
of Testo
Heating Instruments
Find out more
Refrigeration Instruments
Find out more
Climate Instruments
Find out more
Full power.
For you and your world.
The Testo Smart World range revolutionizes HVACR measurement with a fully interconnected suite of instruments that communicate seamlessly via Bluetooth. Designed for ultimate efficiency, these smart tools provide professionals with a comprehensive solution for all HVACR needs, from flue gas analysis and refrigeration tools to precise climate monitoring. By integrating cutting-edge technology with user-friendly operation, the Testo Smart World range enhances workflows, improves accuracy, and ensures effortless data sharing—empowering engineers to work smarter, faster, and more efficiently than ever before.
Just smart. Just fast.
One app for all applications: The testo Smart App ensures end-to-end connectivity making wireless measuring faster and easier than ever before. The new PRO measurement programs save you even more time and hassle in everyday life.
> SMART – automatic Bluetooth pairing
> EASY – new PRO measurement programs
> FAST – all readings at a glance
> PRACTICAL – second screen, remote control and real time measurement data
> EFFICIENT – create and send reports digitally
BASIC
Intuitive measurement menus
FAST
All readings at a glance
EFFECTIVE
Reports sent directly by e-mail
MULTIFUNCTIONAL
Compatible with all Bluetooth-enabled Testo measuring instruments
CLEVER
Free download, free use
NEW
PRO measuring programs
Engineered for efficiency, built for you.
Engineered for efficiency, built for you.
Whether it's a traditional or modern heating system, Testo's advanced measuring technology and the Smart World of products will take you to a new level.
Explore The Range
testo 310 (2nd Gen) Flue Gas Analyser
The perfect entry level flue gas analyser for reliable and efficient testing of heating systems.
Measurement of all relevant parameters: O2, CO, CO2, flue gas, CO environment, draught and pressure
Colour display with easy and intuitive menu guidance
Digital documentation, data transfer and customer data management via testo Smart App
FREE Testo Water Pump Pliers Set - with testo 310 (2nd Generation) for a limited time!
testo 327 Flue Gas Analyser
The testo 327 remains a reliable entry-level flue gas analyser. It accurately performs essential measurement programs while demonstrating robustness and durability.
Domestic Natural Gas, LPG & Oil appliances
Flue gas, draught, tightness & Let-by, ambient CO.
Differential Pressure and Temperature • Fast and robust probe connection
Certified to EN50379-1&3, use for BS 7967
FREE Testo Premium Magnetic Light - with testo 327 for a limited time!
testo 300+ Flue Gas Analyser
Smarter flue gas measurement with testo 300+. Enhanced sensors and improved cost of ownership.
Large 5” HD colour touchscreen display
Email/Bluetooth customer reports
Connect up to 4 testo smart probes via USB Dongle
Improved cost of ownership with enhanced sensors (up to 8,000ppm) with a 5 year lifespan (testo 300+)
FREE Testo Premium Magnetic Light - with testo 300+/300LL for a limited time!
Tips and tricks
for flue gas analysis
Get the full package of expert knowledge for your heating system jobs – as a free download.
Checking the gas connection pressure
Setting the gas-air ratio
Determining the flue gas loss
Calculating the efficiency
And lots more!
More to make your heating world even faster.
Making your tool kit for heating systems complete: testo thermal imagers for detecting leaks fast and for straightforward checking of radiators, underfloor heating or photovoltaic systems.
For entry-level users: accurate measuring performance and ease of use – with the best thermal image quality of its class.
For all-rounders: highest image quality, excellent thermal sensitivity and innovative functions.
For pros: outstanding thermal image quality and useful additional features save time and ensure perfect work results.
Faster, smarter, completely networked.
Faster, smarter, completely networked.
Testo allows you to save valuable time on refrigeration and air conditioning systems. No matter the task, we have the tools for you. All interconnected with SMART functionality.
Explore The Range
testo 550i Digital Manifold
Fully app-controlled SMART digital manifold with 2-way valve block
All activities, from measurement to documentation, using the testo Smart App on your phone.
The smallest digital manifold on the market.
Maximum reliability thanks to the extremely robust IP54 certified housing.
Simple, wireless measurement of further parameters via testo Smart Probes through Bluetooth.
FREE Testo Water Pump Pliers Set - with testo 550i for a limited time!
testo 550s Digital Manifold
SMART digital manifold with large graphic display and 2-way valve block
All results at a glance thanks to intuitive interface
Exceptionally reliable thanks to the robust IP54 certified housing.
Compatibility with testo Smart Probes via Bluetooth allows for measurement of further parameters.
Further functionality via testo Smart App.
FREE Testo Premium Magnetic Light - with testo 550s for a limited time!
testo 558s Digital Manifold
SMART digital manifold with large graphic display and 4-way valve block.
All results at a glance thanks to intuitive interface
Exceptionally reliable thanks to robust IP54 certified housing.
4-way valve block allows users to perform evacuations directly through manifold.
Bluetooth compatibility to relevant Testo products and testo Smart App
FREE Testo Premium Magnetic Light - with testo 557s for a limited time!
The new smart vacuum pump testo 565i.
Just press play.
Imagine you just give the instructions and your tool does the work all by itself. Sounds like a dream of the future? Not with Testo and the new smart vacuum pump testo 565i. Simply enter the vacuum target value and the evacuation, including the vacuum holding test, runs fully automatically.
Fully automated evacuation with integrated holding test
Full safety – also with refrigerants of classes A3 and A2L
Fully smart configuration and measurement with the app
Full connectivity with the entire refrigeration portfolio from Testo
Even more to explore...
Smart Probes
From vacuum to temperature to air humidity: Wireless, precise and simple app-controlled measurement with testo Smart Probes.
Digital Refrigerant Scale
Fully automated refrigerant filling – with the testo 560i digital refrigerant scale and intelligent valve.
Bluetooth Clamp Meter
Perfect for non-contact measurement of tightly fitted conductors – the testo 770-3 clamp meter with fully retractable pincer arm.
Heat pump knowledge
in four modules
Everything you need to make installation and maintenance even faster – find out how with our free guide.
Understanding heat pumps
Basic principles and main components
Planning and measuring correctly
Sound level
And lots more!
Even faster and
smarter with heat pumps.
Take your performance to the next level when maintaining and installing heat pumps: with the testo 558s heat pump kit. You’ll be second to none when it comes to speedy measuring, filling, documenting and ticking off all the other to-dos on your list.
Save time and energy.
For ventilation and air conditioning systems.
Save time and energy.
For ventilation and air conditioning systems.
Good for the ambient climate. And the environment: measuring technology from Testo allows all air conditioning and ventilation systems to be optimally set in no time at all. Whether at vents, filters or in ducts. That not only saves energy and money, but also a lot of hassle in everyday life.
Quick and efficient.
In ducts and outlets.
As multifaceted as your challenges themselves: the testo 440 IAQ measuring instrument allows you to measure all climate-relevant parameters quickly, intuitively and extremely conveniently. Thanks to a wide range of probes and extensive accessories, you have all applications in air conditioning and ventilation systems under effective control –- in ducts, at outlets and on filters.
Optimum indoor climate.
Made fast and easy.
As multifaceted as your challenges themselves: HVAC measurement technology from Testo offers you fast, simple and efficient solutions for a wide range of requirements and systems. From a single source. Out of conviction. With connection to the testo Smart App.
Easy to handle
Digital 100 mm vane anemometer with App connection for measuring the flow, volume flow and temperature at air inlets and outlets.
At your fingertips
Digital 16 mm vane anemometer with App connection for flow measurement and volume flow calculation in ventilation ducts.
Accurate results
Digital hot wire anemometer with App connection for flow and temperature measurements and volume flow calculation in ventilation ducts.
Fast, flexible and compact
Digital differential pressure measuring instrument with App connection for differential pressure measurement (0 to 200 hPa) for checking filters and for Pitot tube measurement in ventilation ducts.
Precise and versatile
Temperature measuring instrument for TC type K with App connection – large measuring range from -50 °C to 1000 °C.
Quick and easy adjustment
of CMV systems.
With the testo 417 and the new PRO measurement programs in the testo Smart App.
Modern residential buildings are often equipped with systems for controlled mechanical ventilation (CMV) to ensure a pleasant indoor climate. Correct commissioning, adjustment and inspection of these systems are crucial for this. This is why we developed a unique PRO measurement program for balancing CMV systems for the testo Smart App. In combination with the testo 417 vane anemometer, the job is done in no time at all – regardless of whether you are a professional or only measure occasionally.
Practical guide: Measurement tasks for residential ventilation systems
Everything you need to know about balancing ventilation systems – download now for free.
Risks of incorrectly adjusted systems
Important standards
Measurement applications in practice
Optimum documentation of readings
And lots more!
Top tips, top tools and top news:
the new HVAC/R magazine.
For everyone who wants to be in the know: get the free HVAC/R magazine with even more exclusive insights and perspectives, packed full of professional knowledge. Take a look now and get up to speed!
At full speed into your e-mail inbox:
the new HVAC/R newsletter from Testo!
Get even more exciting news, tool tips, offers and advice from Testo’s Smart World directly to your smartphone with our free newsletter.