HVAC Shop Blog
Spark-Free Vacuum Pumps for R32: Mastercool R32 Ready Guide
R32 is now the standard refrigerant across most Aussie HVAC-R installs — but its A2L classification means your vacuum pump needs to be spark-free, not just capable. This guide covers why standard brush-motor pumps are a safety risk on R32 systems, how spark-free brushless DC technology works, and what's actually different about evacuating an R32 system versus R22
Mastercool Vacuum Pumps: Complete Guide Australia
Choosing the right vacuum pump can make or break a commissioning job. This complete guide covers Mastercool vacuum pump models, CFM ratings, dual-stage technology, R32 spark-free options, and maintenance — everything Aussie HVAC-R tradies need to pull a deep, verified vacuum every time.
How to Charge by Weight
Step-by-step guide to charging refrigerant by weight using a Mastercool scale. Covers pre-charge prep, nameplate target weight, liquid vs vapor method, and post-charge verificationMastercool Charging Scales
Learn why charging by weight matters, compare Mastercool scale models 98201, 98210-BL Bluetooth and 98315 wireless, and keep your scale accurate with proper calibration