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.
• 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.

• Testo 549 digital manifold
• Rechargeable battery pack
• Calibration certificate
• User manual

The instrument comes preloaded with 60 refrigerant profiles including R114, R12, R123, R1233zd, R1234yf, R1234ze, R124, R125, R13, R134a, R22, R23, R290, R32, R401A, R401B, R402A, R402B, R404A, R407A, R407C, R407F, R407H, R408A, R409A, R410A, R414B, R416A, R420A, R421A, R421B, R422B, R422C, R422D, R424A, R427A, R434A, R437A, R438A, R442A, R444B, R448A, R449A, R450A, R452A, R452B, R453a, R454A, R454B, R454C, R455A, R458A, R500, R502, R503, R507, R513A, R600a, R718 (H₂O), R744 (CO₂).

Additional refrigerants can be updated via Testo Service.