Brivis Gas Heater Pressure Switch 140Pa NS2-1072-02

This genuine Brivis pressure switch, part number BS80021375, is a 140Pa replacement pressure switch for compatible Brivis gas ducted heating systems. It is part of the combustion airflow safety sequence, helping confirm that the combustion fan is proving the correct airflow conditions before the heater continues through ignition and burner operation.

A faulty pressure switch can shut down a unit or prevent it from starting, but the switch should not be guessed by symptom alone. Cracked or blocked sensing tubes, combustion fan faults, flue restrictions, wiring issues, or control board faults can all create symptoms that look like a failed switch. Before ordering, confirm the original part number, Pa rating, bracket length, mounting style, and heater model.

Best For

• HVAC service technicians replacing a confirmed faulty Brivis 140Pa pressure switch.
• Licensed gas fitters servicing compatible Brivis gas ducted heaters.
• Maintenance teams matching the original pressure switch by part number, Pa rating, and bracket length.
• Compatible Brivis heater systems where the original component matches NS2-1072-02, 80021375, B021375, or BS80021375.

Compatibility

• Designed as a replacement pressure switch for compatible Brivis gas ducted heaters.
• Manufacturer part number: NS2-1072-02.
• Brivis part numbers: 80021375 and B021375.
• HVAC Shop SKU: BS80021375.
• Activation pressure: 140 Pa.
• Pa rating and bracket length must match the original pressure switch exactly.

If you are running a different model, check the original switch label, heater data plate, pressure rating, bracket length, and mounting arrangement before ordering. Do not order by appearance alone.

Need help choosing? Read our guide on how to identify the correct Brivis pressure switch before ordering to confirm the correct Pa rating, part number, bracket length, and heater compatibility.

Features

• Exact Part Match: Matches NS2-1072-02, Brivis 80021375, B021375, and HVAC Shop SKU BS80021375 where the original application matches.
• 140Pa Activation: Factory-rated for 140 Pascals, matching compatible Brivis heater applications that require this pressure rating.
• Combustion Airflow Safety Component: Helps confirm the combustion fan and airflow circuit are operating as expected before burner operation continues.
• Bracket Match Required: The bracket length and mounting position must match the original switch exactly for correct fitment and tubing alignment.

Technical Specifications

What's in the Box

• 1 x Brivis Gas Heater Pressure Switch (140Pa, NS2-1072-02)

Installation Notes

1. Confirm the Fault: A qualified technician should confirm whether the pressure switch is faulty or whether the issue is caused by the combustion fan, sensing tubes, flue restriction, wiring, control board, transformer, or another component.
2. Match the Part Number: Check the original switch label and confirm NS2-1072-02, 80021375, B021375, or BS80021375 before ordering.
3. Match the Pa Rating: Confirm the original switch is rated at 140 Pa. Do not substitute another Pa rating.
4. Match the Bracket Length: Confirm the bracket length, mounting position, tubing port orientation, and switch layout match the original exactly.
5. Check Tubing and Connections: The technician should inspect the sensing tubes, wiring, and terminals for cracks, blockages, corrosion, or loose connections before replacing the switch.
6. Test Heater Operation: After installation, the technician should test the airflow proving sequence, ignition sequence, and heater operation before returning the unit to service.

Limitations & Safety Notes

• This switch is only suitable for compatible Brivis gas ducted heater models requiring a 140Pa pressure switch that matches NS2-1072-02, 80021375, B021375, or BS80021375.
• The Pa rating and bracket length must match the original switch exactly.
• Do not substitute a 50Pa, 80Pa, 115Pa, or 165Pa switch for a 140Pa application.
• Pressure switch replacement forms part of the combustion safety sequence and should be carried out by a licensed gas fitter or qualified HVAC technician.
• Gas appliance servicing and commissioning must follow the manufacturer's service information and relevant Australian gas safety requirements, including AS/NZS 5601.1 where applicable.
• If gas or combustion components are disturbed during related work, leak testing and commissioning must be completed by appropriately licensed tradespeople.

Tradie Pro Tip

When troubleshooting a pressure switch fault, check the sensing tubes first. A cracked tube, blocked tube, loose connection, or flue restriction can mimic a failed pressure switch. Also confirm the Pa rating and bracket length before ordering, as the wrong switch can create repeat faults or unsafe operation.

Pair With

Pair with compatible Brivis heater spare parts such as control boards, transformers, thermocouples, pilot assemblies, gas valves, and wiring components when completing a full no-ignition or lockout diagnosis. For diagnostic work, a quality digital manometer helps verify actual differential pressure across the switch ports.