Precision 10K Type III thermistor ensures +/- 0

as the material compresses over time and may not reseal properly once disturbed

ensuring a reliable spring return fail-safe mode during power loss

provided the mounting and electrical ratings match the original specification

Using it on a 50Hz system may cause coil overheating or insufficient plunger pull

Laars Heating Systems R2004500 Filter 321894-709 Precision 10K Type III thermistorProfessional grade combustion performance begins with high quality air filtration. The Laars Heating Systems R2004500 Filter is a critical OEM replacement part engineered specifically for high efficiency boilers and volume water heaters. This washable air inlet filter is constructed from durable open cell polyurethane foam, designed to capture airborne particulates and debris before they enter the combustion chamber. By maintaining a clean combustion