Can I replace this insert while the system is under pressure

Oxidation Resistance: Robust electrode material resists soot buildup and oxidation for extended service life

Is this a bolt-on part or does it require brazing

This specific 904874 model is primarily designed for 90% efficient units and "C" cabinet sizes

Daikin-McQuay 4000835 Filter 326058-757 Can I replace this insertThe Daikin McQuay 4000835 Filter is a factory original OEM replacement air filter engineered for high efficiency particulate capture in Daikin mini split and McQuay HVAC systems. Designed as a rugged washable filter, this 12. 5" x 14. 5" screen serves as the primary barrier against airborne dust and contaminants that compromise heat exchanger efficiency. Maintaining clean coils is critical for preventing high head pressure issues and evaporator freeze