Do I need to refill or service my liquid cooling system?
It depends! On MAINGEAR PCs with "Closed Loop" liquid coolers there is zero maintenance required, and the system will never need refilling or flushing. These types of coolers are also called "AIO" or "All-In-One" liquid coolers and are recognizable as simple CPU coolers with a built-in pump and a single radiator. Typically these coolers have black tubing and you can not see the coolant in the system. Coolers like the MAINGEAR Epic 240 and Epic 360 are "Closed Loop" liquid coolers.
On systems with "Open Loop" liquid cooling you'll typically see more complex cooling systems with separate dedicated pumps, reservoirs, and radiators. These types of cooling systems also often have clear tubing (although on some systems the tubing may be metal), and reservoirs with visible coolant. MAINGEAR systems with "APEX" cooling are "Open Loop" liquid cooling systems. On these types of systems there is some maintenance required to keep your system running smoothly. If you see your coolant level getting low, you'll want to top off the coolant in the system. For most users this will only need to be done once or twice a year, but this may vary depending on how heavily you use your system and other factors. Occasionally you may also need to flush your coolant and fully replace it if it gets dirty and cloudy. Please contact MAINGEAR Support with any questions about maintaining your liquid cooling system: firstname.lastname@example.org / 908-620-9050