Step-by-step

1
Shut the furnace off at the thermostat and pick a spot on the return air duct near the filter.
2
Drill the air pressure sensor port into the return duct with a step bit.
3
Mount the monitoring module level next to the port and connect the sensor tube.
4
Install a fresh MERV 11 or 13 filter so the baseline reading is accurate.
5
Power on the module, calibrate the baseline air restriction per the app, and join it to Wi-Fi.
6
Confirm it reports to your phone and will alert you when airflow drops.

Common mistakes

• Drilling into the wrong side of the filter slot
• Calibrating with a dirty filter installed
• Mounting the module where Wi-Fi is weak

Maintenance & next steps

Replace the filter when the app alerts, and re-baseline after each change.

When to call a professional

For sealed or hard-to-access ductwork, or if you're uncomfortable drilling the plenum.

Editor's note: This is instructional content for How to Install a Smart Wi-Fi Furnace Filter Monitor. Replace with your own firsthand experience and photos before publishing.

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