Vibration Isolation: High-density material reduces mechanical vibration

The Carrier 325531-404 Filter is a genuine OEM replacement air filter engineered for high-performance filtration in Carrier

Vent limiters are designed for indoor use

making it versatile for various control system architectures

Precise Two-Stage Logic: Calibrated

Hydrolevel 1100H5 Low Water Cut-Off 321042-401 Vibration Isolation: High-density material reducesThe Hydrolevel 1100H5 is a 24VAC low water cut off (LWCO) engineered specifically for high efficiency residential boilers. This compact probe type control utilizes Hydrolevel CycleGard technology to periodically shut down the burner, allowing the water level to stabilize for accurate sensing without nuisance tripping. It features an automatic reset function and an integrated burner circuit test button for rapid diagnostic verification during