Predictive Sensing: Catch Failures Before They Happenintermediate · ~180 min

HVAC Filter and Efficiency Monitor — Replace-Now, Not Guess

Ever have a real-world task you wished software could just handle for you?

Leaving it undone means lost time and results you never get to use. This project sets it up for you — follow the steps yourself, or have a vetted AI Advisor build it for you.

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$99 / year

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What you'll do

A monitor on your furnace or air handler that Claude Code built — an ESP32 reading the differential pressure ACROSS your filter plus the supply and return air temperatures, learning your system's clean-filter baseline, and trending both over time so it tells you the filter is ACTUALLY clogged (rising pressure drop) and your efficiency is slipping — a data-driven "replace it now" instead of a calendar guess.