Replacing an air filter too early wastes money—but waiting too long quietly drives up energy bills as your HVAC works harder through a clogged filter. In this guide, we break down how to find the “sweet spot” by weighing efficiency loss, filter cost, and labor. We also introduce an IoT-based calculator powered by real-time readings from the Ellenex PDT2 Differential Pressure Sensor, helping you know when to order a new filter and when it’s time to schedule maintenance.

As we reflect on our recent accomplishments, I am excited to share that our team has outdone themselves, setting another benchmark in our...