R410a Gauges: Buy

When selecting a set, ensure it meets these non-negotiable physical requirements:

Digital vs Analog Manifold Gauges: Efficiency Comparison in HVAC

You need different gauges because R-410A operates at pressures 50-60% higher than R-22. Using a low-pressure R-22 gauge on a high- hvacolink.com

: Look for a minimum working pressure of 500 PSI (low side) and 800 PSI (high side). Avoid any "dual-use" gauges that do not explicitly state these engineering limits on the gauge face or manifold body.