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Measurement solutions for sustainable heating

Simple, connected - for all requirements.

With heating measurement solutions from Testo, you are ideally equipped for all measurement tasks in your everyday work on all heating systems - and thus do your job even more professionally, reliably and quickly!

Heat pumps: cost and energy efficiency, and environmentally friendly operation

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Flue gas analysis: For an optimally adjusted heating system

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Other applications related to heating systems

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Heating technology

Heat pumps under control:
From commissioning and regulation up to maintenance and service

In order for heat pumps to reliably provide sustainable heat, and for the heating curve to be right, they have to be thoroughly checked using suitable measurement technology at regular service and maintenance intervals.

An annual service is also recommended for all heat pumps with refrigerant. This is way, efficient operation is ensured, and your customers can save costs.

Measurement technology for servicing heat pumps with refrigerant

Servicing heat pumps

With a digital manifold, you can carry out the commissioning and service of heat pumps quickly, flexibly, and precisely. Bluetooth, wireless probes and the testo Smart App make measurement and documentation easier.

  • Perform high-precision measurements in no time

  • Ensure tightness of refrigeration systems

  • Test and optimize the efficiency of the system

Our manifolds and Smart Probes for heat pumps at a glance

What customers say about Testo digital manifolds

What else I would like to say to other installers, the device really saves a lot of time, you don't have to take as much stuff with you, you don't have to do as much yourself, because the testo 557s does everything for you.

Tom Siben


Service technician at Lennox

In the past, we had to work with analogue measuring devices and needed a notepad and we needed external temperature sensors. Testo has now incorporated all of this into a single device. This makes it much easier and much quicker for us to satisfy the customer with the performance of their device.

Peter van Vliet



My first impression is very positive, a very nice, new measuring set, the purchase of which you certainly won't regret as a cooling technician. I don't think any other brand can compete.

Marco Slump


Owner of Slump Heating and Refrigeration, Appingedam (NL)

testo Smart App

One App for all applications

The testo Smart App guides you quickly and easily through measurements on refrigeration, air conditioning and heating systems.

Now new:

PRO measuring programs for increasing the efficiency of your applications

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Compatible with all Bluetooth-enabled Testo measuring instruments


Direct report dispatch by e-mail


All measurement values at a glance


Intuitive measurement menus


Free download, free use


PRO measuring programs

Further applications on heat pumps

Vacuum gauges

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Evacuating/ vacuum measurement

Professional and highly precise pressure measurement

Refrigerant scale

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Automatic and precise charging according to target value

Electrical measuring instruments

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Electrical testing

Safe testing of all electrical parameters of equipment and components

Leak detectors

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Leak detection/ tightness testing

Reliable detection of the smallest leaks for all common refrigerants


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Temperature measurement

Flexible temperature measurement of components and ambient air

Manifold testo 570s

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Long-term measurement

World's longest battery life of up to 360 hours and large data memory

Other applications related to heating systems

Differential pressure measurement

Checking the gas pressure on burners is one of the standard measurements during maintenance on domestic heating systems. The gas flow pressure and the gas rest pressure of the system are measured.

  • Optimum flow pressure for gas boilers in the range of 18 to 25 mbar

  • Avoid failure of the heating system

Everything around the topics of heating measurement technology and heat pumps

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Our services


Do you have any questions or would you like a personal consultation?
We would be more than happy to help you.

Customer services

In case of malfunctions, send in your meter with a short description of the error. Please also include your telephone number for any queries. Normally you will receive your meter back within one week.


Our subsidiary Testo Industrial Services supports you every day in ensuring quality while always complying with the relevant standards and guidelines. You get all the services you need for this from a single source.

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The new
HVAC/R magazine is here!

Find all the latest news, tools and trends: get our free HVAC/R magazine and find out everything about the big trends in industry. Benefit from exclusive professional tips, and gain fascinating insights into the testo Smart World.

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The top trends in the industry

Special report: heat transition

Exclusive professional tips

Automation vision

And lots more!