Harman & Heatilator Vacuum Pressure Differential Switch 3-20-6866 - Pellet Stove Replacement Part for Efficient Heating | Perfect for Home & Commercial Pellet Stove Maintenance

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Fits Harman Models Absolute 43 - Absolute 63 - Accentra 52I - Accentra 52i-TC - Accentra FS (Accentra Cast) - Accentra Insert - Advance - Allure 50 - HydroFlex 60 (HF60) Boiler - P35I Insert - P38 (P38+, pp38+) - P43 - P61 - P61A - P68 - PB105 Boiler - PC45 - PF100 Furnace - PF120 Furnace - XXV (25th Anniversary Model) - XXV-TC

Fits Heatilator Models BA100 - BH105 - BH60 - BIO-120

This Vacuum Sensor Pressure Switch detects pressure in the exhaust chamber and vent piping as well as the firebox and fuel hopper. This switch will shut down the auger feed motor if the exhaust is blocked, exhaust fan is weak, ash blockage in the unit or venting, gasket seals are not tight around the door, ash pan or fuel hopper lid.

One Year No Hassle Warranty