Testo 550i Smart Kit Digital Manifold

A compact app-controlled manifold kit for refrigeration, air conditioning and heat pump work. The Testo 550i Smart Kit gives you the testo 550i digital manifold, 2 x testo 115i wireless clamp thermometers and a transport case, so you can measure pressure and pipe temperature in the Testo Smart App and speed up everyday service, charging and commissioning tasks.

If you are building a cleaner wireless workflow, this kit sits naturally with the full Testo range, the Bluetooth Smart Tools collection, and supporting charging gear such as refrigerant scales and vacuum gauges.

Best for

• HVAC/R technicians who want pressure and pipe-temperature readings in one app workflow
• Split system, heat pump and refrigeration service work
• Commissioning, charging checks and routine diagnostics
• Tradies who want portable gear without a bulky manifold setup

Why this kit works well on site

• App-controlled workflow: run measurements, view live data and document jobs in the Testo Smart App.
• Pressure + pipe temperature together: the included 115i clamp thermometers make superheat and subcooling workflows much easier.
• Compact and robust: the 550i is built for field use with an IP54-rated housing and a sturdy hook.
• Suitable for modern systems: supports common HVAC/R work and is compatible with A3 and A2L refrigerants.
• Expandable system: add a Testo 552i wireless vacuum probe for evacuation monitoring, or browse refrigerant gauges if you want to compare manifold options.

What’s included

• 1 x Testo 550i app-controlled digital manifold
• 2 x Testo 115i wireless clamp thermometers
• 1 x transport case

Why This Product Matters

Real talk: when you’re up on a Sydney CBD rooftop in 40-degree heat, the last thing you need is a clunky gauge and a notebook blowing away. The 550i keeps it tidy—hook it up, read everything on your phone, and email the report before you’re back in the ute. That’s a ripper way to avoid “did we charge that right?” calls later in the week. If you’re building out a Testo setup, have a look at the Testo collection for matched probes and kits. 

Pro Tip

In the Testo Smart App, set refrigerant Favourites (R32, R410A, R134a, etc.) and enable automatic SH/SC. You’ll shave minutes off every service call and keep your data consistent across the team. 

Key specs

Compatibility and add-ons

This kit is a strong fit for technicians who want wireless pressure and pipe-temperature measurement in one package. For deeper evacuation workflows, add the Testo 552i wireless vacuum probe. If you also want automated charging support, browse compatible refrigerant scales. For more Testo instrumentation, see the Testo collection.

Not ideal for

• Buyers who want analogue gauges rather than app-based workflows
• Technicians who do not want to use a smartphone or tablet on site
• Users wanting a full evacuation setup without adding a dedicated vacuum probe or vacuum gauge

Frequently asked questions

What is the difference between the Testo 550i and the 550i Smart Kit?

The Smart Kit includes the 550i manifold plus 2 x 115i wireless clamp thermometers and a case, which makes it a better ready-to-work package for superheat and subcooling checks.

Can I calculate superheat and subcooling with this kit?

Yes. That is one of the main strengths of the 550i Smart Kit when used in the Testo Smart App with the included 115i clamp probes.

Does this kit include a vacuum probe?

No. For evacuation monitoring, add the Testo 552i wireless vacuum probe or browse vacuum gauges.

Is it suitable for A2L refrigerants such as R32?

The 550i platform is described by Testo as compatible with A3 and A2L refrigerants. Always follow current Australian refrigerant handling requirements and site safety procedures.

Who should buy this instead of the base 550i manifold?

Buy the Smart Kit if you want temperature clamps included from day one. It is the better option for tradies who want a faster app-based workflow without adding 115i clamps later.

Related Products

• Testo 550i Smart-Kit (includes two 115i clamps) — best starter bundle if you want temps integrated out of the box.
• Testo 115i Clamp Thermometer — add precise pipe temps for rock-solid SH/SC checks. 
• Testo 552i Wireless Vacuum Probe — app-driven evacuation without extra hoses. 

For official specifications and A2L guidance, see the Testo 550i product page. 

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