Toyotomi Air Pressure Switch

The Toyotomi Air Pressure Switch, part number 20476985, is a factory replacement safety control used in Toyotomi oil-fired heaters to monitor airflow and pressure conditions, allowing the heater to operate only when proper venting and combustion air flow are present.

What’s included: One Toyotomi air pressure switch for heater service replacement.

Installation limits: Install only on approved Toyotomi heater models with power disconnected, following the Toyotomi service manual and applicable safety requirements.

Compatibility: Compatible with select Toyotomi oil-fired heater models that use an air pressure safety switch.

Type A Air Pressure Switch (20476885) is discontinued, where the Type B Air Pressure Switch can be used in both Type A & Type B units.  Oil Miser Air Pressure Switch replacement part for models OM-122DW, OM-128HH.

• Factory replacement air pressure switch for Toyotomi oil-fired heaters
• Monitors airflow and pressure conditions within the heater
• Supports safe operation by preventing operation under improper venting conditions
• Designed to match original equipment specifications for correct fit and function
• Used in maintenance or repair when the original pressure switch is faulty or worn
• Helps maintain reliable heater performance in continuous-use and cold-climate applications

Proper airflow sensing is essential for safe heater operation and reliable combustion control.