Lennox 11U70 Pressure Switch 320788-703 proper orifices and gas valve

proper orifices and gas valve settings must be confirmed by a licensed technician during installation

or soot accumulation indicate that a replacement Amana-Goodman 4022704S is necessary for safety and efficiency

enhancing the total energy efficiency of your cooling system

matching all electrical and mechanical specifications of the original unit

single-piece EPDM rubber coupling sleeve engineered for Sure-Flex Plus size 10 assemblies

Lennox 11U70 Pressure Switch 320788-703 proper orifices and gas valveThe Lennox 11U70 Pressure Switch is a critical safety component engineered to monitor and regulate internal air pressure within high performance HVAC systems. This . 80 pressure switch (Catalog No. 11U70, Part No. 104371 07) is a single pole, single throw (SPST N. O.) contact rated for 5 Amp resistive at 24 VAC. Tasked with sensing the draft created by the inducer motor, it ensures the combustion process only initiates under safe airflow conditions.