Work smarter with cooling and heating technology.
Whether you're installing refrigeration systems or servicing heat pumps, Testo instruments make every measurement simple, accurate and connected. Designed for professionals who demand reliable performance in every job.

Everything for your refrigeration projects
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Overview of the situation
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The smart pressure gauge rack
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Smooth workflows
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The complete solution
Overview of the situation
Overview of the situation
Testo offers a complete solution for the entire refrigeration system - with pressure gauge racks, a wide range of sensors, vacuum pump and refrigerant scale, all connected to the same app.
The smart pressure gauge rack
The smart pressure gauge rack
The testo 558s manometer stand is the flagship of the Testo cooling portfolio. Reliable, intuitive and created for professionals who expect more from their measuring instruments.
Smooth workflows
Smooth workflows
Pair the testo 558s manometer stand with the testo Smart app for real-time data, guided workflows and easy reporting - to get even more out of your instrument and sensors.
The complete solution
The complete solution
From vacuuming to filling and troubleshooting. Create your own system of instruments for all your refrigeration tasks.
testo 558s
Smart control over every system
Precision and flexibility in working with air conditioning and heat pump systems. testo 558s has an intuitive design that makes it easy to use - even when wearing gloves.
- App-like user interface with clear measurement graphics
- Control via touchscreen, keypad or app
- Trend graphs of measurement values over 30 minutes
- Compatible with A2L and A3 refrigerants
- Long-term measurement with integrated data logging for 72 hours
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with a request body that specifies how to map the columns of your import file to the associated CRM properties in HubSpot.... In the request JSON, define the import file details, including mapping the spreadsheet's columns to HubSpot data. Your request JSON should include the following fields:... entry for each column.
testo Smart App
One app. Lots of instruments. Total control.
Say goodbye to paperwork and scattered measurements. With the testo Smart App, all your measurements for refrigeration systems and heat pumps are stored in one place - to increase productivity and minimize downtime.
- Flexible - works with all Testo instruments with Bluetooth®
- Intuitive - guided measurement processes
- Efficient - quick and easy documentation
- Always up to date - regular updates included
- Smart and free - free to download and use
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with a request body that specifies how to map the columns of your import file to the associated CRM properties in HubSpot.... In the request JSON, define the import file details, including mapping the spreadsheet's columns to HubSpot data. Your request JSON should include the following fields:... entry for each column.
Complete measurement kits for cooling and heating jobs
Vacuum suction, filling & seaweed ammeter
testo SmartProbes - for vacuum, pressure, humidity & temperature
What customers say
It's so intuitive - just like using a smartphone. It's not something I've experienced with other pressure gauges. It has an excellent selection of refrigerants and an ingenious feature that shows the system pressures in a clear graph. Truly a fantastic instrument.
Chloe Jennings, Refrigeration Technician
How can I help you?
Please contact us if you would like to know more and need help choosing the right measuring instrument for your business.
