The SK4TPHM1 bundles NAVAC's digital manifold system with air-side measurement tools — anemometer, differential manometer, and psychrometer — all feeding data into a single smartphone app via Bluetooth. The package gives techs refrigerant pressures, superheat, subcool, airflow CFM, static pressure, and wet-bulb readings without juggling three separate devices or writing numbers on a notepad.

Field diagnostics are shifting toward app-based platforms that log measurements automatically and generate customer-facing reports. The SK4TPHM1 fits that trend by pairing wireless sensors with NAVAC's companion app, which calculates system performance metrics in real time. The digital manifold handles pressures up to 800 psi and works with legacy refrigerants plus A2L blends like R-454B and R-32. The anemometer measures velocity from 0 to 6,890 FPM, covering everything from residential supply registers to rooftop unit discharge grilles.

What contractors gain is efficiency on callbacks and PM visits. Instead of moving between gauges, a velometer, and a manometer, you pull up one screen and see refrigerant charge status alongside duct static and airflow. The app stores job data and timestamps measurements, which helps when a customer calls back three months later asking what the subcooling was during the last service. The kit also includes temperature clamps and a carrying case designed to fit in a van shelf slot.

For shops running structured maintenance agreements, this type of tool reduces diagnostic time per stop. If you're charging $189 for a tune-up and you can shave eight minutes off your average call by eliminating manual data entry and tool swaps, you're adding billable capacity without hiring. The app generates PDF reports with branded headers, which some contractors email directly to homeowners before leaving the driveway — a solid upsell move when the data shows a system running 18°F subcooling and 250 CFM low on airflow.

NAVAC hasn't published retail pricing yet, but expect the SK4TPHM1 to land in the $800–$1,200 range based on competing kits from Testo and Fieldpiece. The value proposition depends on how often your techs run both refrigerant and air-side diagnostics on the same call. If you're primarily doing changeouts, a basic manifold works fine. If you're chasing comfort complaints and efficiency issues, integrated diagnostics pay back faster.