No, you can't because they aren't interchangeable. Gauges are set with specific pressures and temperatures that match the refrigerant you use.

Here are some signs that indicate low Freon: - Vents aren't blowing cold air - It takes longer to cool the room - The desired temperature was never...

For R-22, the gauges should read between 120° (high pressure) to 45° (low pressure) temperature. On the other hand, the high pressure should be 418...

Here's how you can test your AC gauges: 1. Close all the valves on manual couplers as well as the manifold gauge. Attach the high-side coupler with...

Here's how you can put Freon in your car with gauges: 1. Find the low-pressure side port 2. Attach recharge kit (the Freon or R-22 refregerent) 3....

Yes, anyone can buy a 410a refrigerant as there is no license or certification needed.