Optimized Compatibility: Verified for use with 1–3 ton Source 1 and York systems

it guarantees seamless mechanical compatibility with gas-fired unit heaters where temperature-dependent fan control is required for operational safety

This construction provides the necessary lateral rigidity and flexibility to handle frequent start-stop cycles without excessive elongation

the system continuously monitors duct pressure

Galvanic Protection: High-quality Buna-N material provides superior insulation to prevent pipe deterioration

Laars Heating Systems R2076600 Pressure Switch 328140-751 Optimized Compatibility: Verified for useThe Laars Heating Systems R2076600 Pressure Switch is a critical safety and operational component designed for high efficiency hydronic systems, specifically the Laars Pennant and Mighty Therm II series. Calibrated at 1. 05" WC (Water Column), this PR V pressure switch serves as a blower proving mechanism, ensuring that the combustion fan is generating sufficient airflow before the ignition sequence initiates. For contractors servicing commercial