Testo 550i Digital Manifold Smart-Kit | Smart Kit Australia for HVAC

The Testo 550i is a compact, app-controlled digital manifold built for Aussie HVAC & refrigeration pros who want faster charging, tighter diagnostics, and fewer call-backs. Fully wireless via the Testo Smart App, it’s the “set it, read it, done” gauge that keeps you moving when the job’s hot and the clock’s ticking. Too easy.

Key Features & Trade Benefits

• Fully app-controlled over Bluetooth® – Leave the ladder and read live pressures and temps from the Testo Smart App; safer and quicker on roof installs. 
• 2-valve block with robust hook – Simple, reliable charging and recovery without lugging a bulky body around.
• Accurate pressure sensor (±0.5% fs) – Confidence on critical charge jobs and less “she’ll-be-right” guesswork. 
• Wide measuring range (-1 to 60 bar) – Covers common A/C and heat pump systems across residential and light-commercial. 
• IP54 housing – Built for dusty plant rooms and drizzly Brisbane arvos; wipe down and crack on.
• Works with Testo wireless probes (115i/552i) – Add temps and vacuum for full SH/SC and evacuation workflows with no cable spaghetti. 
• Over 90 refrigerants in the app – Pick favourites, auto-calculate SH/SC, and send job reports on the spot. Reduce call-backs, keep clients happy. 

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. 

Compatibility & System Info

• Refrigerants: 90+ in-app, including R32 (A2L), R410A, R134a, R404A, R407C. Follow Testo’s A2L guidance for safe use. 
• Wireless add-ons: Testo 115i (pipe temp), Testo 552i (vacuum), and other Smart Probes. 
• Best for: Split systems, packaged units, heat pumps, and light-commercial refrigeration.

Local Use Cases

Brisbane humidity playing games with SH/SC? Or tight service shafts in Melbourne CBD? Go wireless, keep hoses short, and watch the app. No worries—less clutter, better data.

What’s Included

• Testo 550i digital manifold (2-valve block)
• 3 × AAA batteries (pre-installed)
• Quick start guide

Specifications

Model / Order no.	Testo 550i / 0564 2550
Valve block	2-valve
Pressure range	-1 to 60 bar
Accuracy	±0.5% fs
Resolution	0.01 bar
Overload	65 bar
Pressure connections	3 × 7/16" UNF
Bluetooth	App-controlled; works with Testo Smart App
Protection	IP54
Operating temp.	-10 … +50 °C
Power	3 × AAA batteries (up to ~130 h)
Dimensions / Weight	77 × 109 × 63 mm / ~595 g

Specification sources: Testo product page/data sheet and third-party technical listings. 

Warranty & Returns

• Manufacturer warranty: 2-year Testo instrument warranty (see Testo for details). 
• HVAC Shop Shipping & Returns: See our Shipping & Returns policy for change-of-mind, transit damage and timeframes.

FAQs

Q: Can I log SH/SC and send a PDF to the client?
A: Yep—use the Testo Smart App to calculate SH/SC automatically and export a job report straight from site.

Q: How do I add pipe temperatures without cables?
A: Pair the Testo 115i wireless clamp thermometer and the temps appear in your app workflow. 

Q: Can I measure vacuum through the app?
A: Yes—add the Testo 552i wireless vacuum probe and monitor evacuation live, hose-free. 

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.