Laars Heating Systems A2123411 Cartridge Assembly 321894-708 Always verify your specific model

Always verify your specific model and serial number against the Heil product specifications to ensure the internal dimensions and porting match

OEM Reliability: Ensures exact physical and electrical matching with existing brackets and blower motor module connectors

ensuring the system operates within its engineered temperature rise specifications

this kit allows you to transition from the outdated 401 filter to the high-efficiency Aprilaire 413 filter

this 155-175F flame rollout switch replacement is essential for troubleshooting "limit circuit open" 1-flash diagnostic codes on Lennox furnace units

Laars Heating Systems A2123411 Cartridge Assembly 321894-708 Always verify your specific modelThe Laars Heating Systems A2123411 Cartridge Assembly is a critical OEM replacement part engineered for hydronic boiler and commercial water heater applications. This Taco 180 270RP pattern assembly features a heavy duty cast iron body designed to handle the rigorous demanding flow requirements of high efficiency heating systems. It is effectively utilized in various Laars boiler models and pool heaters, functioning as a primary component to regulate