Description

This is a replacement differential pressure switch for Harman and Heatilator Eco Choice pellet stoves. Many people call it a vacuum switch. It senses proper airflow before allowing the auger to feed pellets.

Fits these Harman pellet stove models:

• Absolute 43, Absolute43-C, Absolute 63
• Accentra FS (Cast), Accentra Insert, Accentra 52i, Accentra 52i-TC
• Advance, Allure 50, HF60
• P35i Pellet Insert, Pellet Pro 38 Plus (P38+)
• P43, P61, P61A, P68
• PC45, PF100, PB105, PF120
• XXV, XXV-TC

Fits these Heatilator Eco-Choice pellet stoves:

• BH60, BH105, BA100

Harman Part number 3-20-6866. This switch also replaces Harman parts 3-20-9301 and 3-20-3433. OEM Harman part that supports the device.