Mestek j11r06779-001 Air Pressure Switch Gg Series

Product Description

The MESTEK j11r06779-001 is an air pressure switch designed as a standard alternative replacement for use in gas-fired heating equipment. Air pressure switches are safety devices that verify inducer or combustion air blower operation before allowing the gas valve to open. If the switch does not sense the correct differential pressure, the control board will not complete the ignition sequence. This part is installed by licensed HVAC technicians during routine maintenance or component-level service calls on residential and light-commercial heating units.

This pressure switch is specified as a standard alternative for the GG Series units rated at 30,000 to 45,000 BTU/h. It fits into the pressure switch circuit on the integrated control board wiring harness and is connected via rubber tubing to the inducer housing pressure port. Technicians replacing a failed or suspect pressure switch in GG Series equipment in the 30-45K input range should verify this part number against the unit nameplate before installation.

Key Features

• Designed as a standard alternative replacement for OEM pressure switches in GG Series 30-45K units
• Safety switch function prevents ignition sequence if inducer airflow is insufficient
• Direct replacement format reduces wiring modification during service
• Fits into existing pressure tubing and harness connections on compatible units

Compatibility

Specified as a standard alternative air pressure switch for MESTEK GG Series heating units in the 30,000 to 45,000 BTU/h range. Verify unit model number and nameplate data before ordering to confirm fitment.

Installation Notes

Air pressure switches are typically installed by licensed HVAC technicians. Shut off power to the unit at the disconnect switch before removing or replacing the pressure switch. Inspect the rubber pressure tubing for cracks or blockages before installing the new switch, as tubing faults are a common cause of nuisance pressure switch trips. Follow all applicable local codes and the equipment manufacturer service documentation when performing the replacement.

Technical Specifications

• Application: GG Series 30,000 to 45,000 BTU/h
• Switch Type: Air Pressure Switch
• Replacement Type: Standard Alternative

Standard Information

• Brand: MESTEK
• Manufacturer Part Number: j11r06779-001