Refrigerant Scales
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Refrigerant Scales – Digital Charging Scales for HVAC & Refrigeration
Charging by weight is the only accurate way to recharge a refrigerant system. Guessing by pressure or sight glass leads to overcharging, undercharging, and callbacks. A quality digital refrigerant scale gives you a precise reading every time — protecting the system, the compressor, and your reputation.
This collection covers digital refrigerant charging scales from Javac, Fieldpiece, and Hilmor, suited to residential splits, commercial refrigeration, and automotive A/C work across Australia.
What to Look for in a Refrigerant Scale
- Capacity — most HVAC scales handle 50–100 kg. For large commercial systems with big cylinders, confirm the scale's maximum load before buying.
- Resolution — 5 g resolution is standard for HVAC work. Finer resolution (1–2 g) is useful for critical charging of small refrigeration systems.
- Tare function — essential for zeroing out the cylinder weight so you're only measuring the refrigerant added or removed.
- Auto-shutoff — saves battery life between jobs; look for models that retain the last reading on restart.
- Programmable target weight — set the required charge weight and the scale alarms when you hit it — no need to watch the display constantly.
- Platform size — ensure the platform is large enough for your cylinder base.
- Battery life — 60+ hours is typical for field use; check the power source (AA, AAA, or rechargeable).
Javac Procharge vs Standard Scales
| Feature | Standard Scale | Javac Procharge 100P |
|---|---|---|
| Resolution | 10–20 g | 5 g |
| Programmable target | No | Yes |
| Memory on restart | No | Yes |
| Best for | General service charging | Critical charging, small systems |
Related Categories
- Manifold Gauge Sets — monitor system pressures during charging
- Vacuum Pumps — evacuate before recharging
- Recovery Machines — recover refrigerant before service work
- HVAC Tool Kits — bundled kits that include a scale
- Javac Tools — browse the full Javac range
Frequently Asked Questions
Why charge by weight instead of pressure?
System pressure varies with ambient temperature, refrigerant type, and system condition. Weight is a fixed, accurate measurement that doesn't change with conditions. Charging by weight is the manufacturer-recommended method for most modern systems and is required for accurate superheat and subcooling targets.
Can I use a kitchen scale for refrigerant charging?
No. Kitchen scales lack the resolution, capacity, and tare accuracy needed for refrigerant work. A dedicated refrigerant scale is calibrated for the task and built to handle the weight of full cylinders safely.
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