Uploaded February 2026 | Updated September 2026, 1 day ago

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Advanced HVAC & Refrigeration Diagnostics

Get the scoop on the latest digital manifolds from Testo — including the 550s, 557s, and 550i series — designed to simplify HVAC and refrigeration measurements with digital precision and smart features. From pressure, superheat/subcooling calculations, and temperature measurement to powerful app connectivity, these manifolds are engineered for efficiency on every job.

Whether you’re servicing heat pumps, AC, or refrigeration systems, the new Testo digital manifolds help you measure faster, more accurately, and with clearer data visualization.

🔗 Explore the full lineup: itm.com/online/testo-550s-557s-digital-manifold-kits

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