HVAC Shop Blog

R32's higher operating pressures and A2L flammability classification mean manifold gauge compatibility is a genuine safety and compliance issue, not just a spec sheet detail. This guide covers how to verify pressure ratings, seal materials, and refrigerant compatibility on your existing manifold, plus what changes in the charging workflow when you move from R22 or R410A onto R32 systems.

A manifold gauge set is the tool you reach for on every job. This guide compares Mastercool's digital and analog manifold options across 2-valve and 4-valve configurations, covering R32 compatibility, superheat and subcooling calculation, and which type suits your typical work and conditions best.

Aussie guide to HVAC hoses, fittings and adapters. Find the right sizes, materials and R32-safe gear to cut leaks, speed up vacuums and keep your work compliant across Australia.

Choose the right Javac starter kit—COMPAK, PAKSPLIT, PAKCOMP or AASPAK. Australian-made, ARCtick-ready tools with local support and fast delivery nationwide.