AC meter (often meaning topping up refrigerant gas in an air conditioning system) needs to be done carefully to avoid damage or safety risks. Here’s a clear, practical guide:
Important First
Don’t “just refill” unless you’re sure the gas is low.
Low refrigerant usually means there’s a leak—fix that first.
Use the correct refrigerant type (e.g., R22, R410A, R32).
What You Need
Manifold gauge set
Refrigerant gas cylinder
Vacuum pump (if system is empty)
Safety gloves & goggles