About AG Compressor
Castlehill Trading 159 CC t/a AG Compressor specialises in industrial compressed-air solutions across South Africa. Our team is factory-trained on major brands (Wright, NX etc.) and focuses on reducing downtime, improving system efficiency and delivering lasting value.
We offer emergency breakdown support, preventive maintenance programs, professional screw-compressor installations, dryer & filter retrofits, and a wide selection of genuine parts. Our technicians provide on-site diagnostics, energy optimisation advice and tailored maintenance schedules.
Why choose AG Compressor
Fast response, certified technicians, and a focus on uptime and efficiency. We keep plant downtime minimal with practical service plans and quick parts turnaround.
Our approach
Diagnostics-first, safety-focused, and data-driven maintenance plans that prioritise energy savings and long-term reliability.
Services snapshot
Diagnostics, warranty & component repairs for major compressor models.
Preventative maintenance plans, oil & filter schedules, and leak detection.
Installed Compressor Gallery
Out with the old, in with the efficient. A 22kW piston compressor replaced with a sleek, energy-saving 15kW VSD screw compressor.
Powering Performance in Stormill! A sleek and efficient screw compressor, receiver, and dryer installation.
Wright Air RK20EF 15Kw VSD 16 Bar Full Feature Screw compressor for laser cutting. Mounted on a 400L receiver.
Installation of a 55Kw VSD quality Screw compressor.
Serviced and getting ready for the second compressor.
Installation of a 37Kw VSD screw compressor and tank.
Another happy customer replacing an 11Kw Piston compressor with a 7.5Kw VSD energy saving Screw compressor.
Frequently asked questions
How often should I service my air compressor?
Daily: drain condensate & check oil. Weekly: inspect hoses & filters. Monthly: inspect belts & check for leaks. Annually: full service including oil & filter replacement.
What pressure should I run my compressor at?
Most workshop tools perform well between 90–115 psi. Confirm tool requirements and set cut-in / cut-out on the pressure switch accordingly.
How do I prevent condensation and water in the tank?
Drain the receiver daily. Use refrigerated dryers and proper filtration for compressed air systems to reduce moisture and corrosion.
Do you service all compressor brands?
Yes. AG Compressor technicians are trained to service all major brands. We focus on uptime, efficiency, and reliability.
