Follow these three easy steps to enjoy convenient text and/or e-mail alerts to your Smartphone (Android or iOS) or desktop computer or tablet (Mac or PC) whenever your HVAC system’s filter needs servicing. First, create an AirFilterSentry account at www.cleanalertwifi.com and add your monitor to the account. You will get a year of AirFilterSentry Plus Notification Service FREE. After the year is up, you have the option renew your Plus service for a small annual fee or to downgrade to Basic service and never be charged again. Next, install the FILTERSCAN WiFi air filter monitor on your forced air heating and/or cooling system, link it wirelessly with your Internet router using the supplied instructions, and calibrate it. It will now start monitoring your system and storing its readings on our server. When it detects that the air filter is clogged it will alert you by phone and/or email. You will also be able to view and download reports that provide performance information such as the percentage of air filter life used, the monitor’s battery status, and the elapsed time since your last air filter replacement.