Testo 549 Digital Manifold for Refrigeration Systems

The Testo 549 digital manifold is a professional-grade tool designed to replace analog gauges, offering precise pressure measurement and intelligent temperature calculations for 60+ refrigerants. With a rugged build and user-friendly interface, it measures high/low side pressures and instantly displays saturation/evaporation temperatures. When paired with optional temperature probes, it enables automatic superheat/subcooling calculations, making it an essential device for HVAC/R technicians.

Dual Pressure Sensing:

Pressure range: -15 to +870 psi (-1 to +60 bar) with ±0.5% full-scale accuracy.

3x 1/4"" SAE probe connections for high/low side and vacuum measurements.

Refrigerant Versatility:

Preloaded with 60 refrigerant profiles (e.g., R410A, R32, CO₂), expandable via Testo Service.

Temperature Integration:

Optional NTC probes enable -58 to 302°F (-50 to 150°C) temperature measurement (±0.5°C accuracy).

Auto-calculate superheat/subcooling with real-time data.

Design & Usability

Intuitive Display:

Large 2-line backlit LCD for clear readings in low-light environments.

Rugged Construction:

IP42 protection against dust/splashes; 37.39 oz (1060 g) for durable field use.

2-way valve block with sight glass for visual refrigerant flow inspection.

Battery Life:

Up to 250 hours (display/Bluetooth off) for extended field operations.

Included Components

Testo 549 digital manifold

Rechargeable battery pack

Calibration certificate

User manual