Lennox 21P02 Smart Air Quality Monitor

The Lennox Smart Air Quality Monitor detects and tracks particulates, carbon dioxide and volatile organic compounds (TVOC’s) inside the home. When poor quality air is detected, it triggers your system to cycle and clean the air, providing peace of mind that your family is breathing the most healthy, perfect air. When your HVAC system includes Healthy Climate® indoor air quality products, it can more effectively address the problems it detects. In fact, the Lennox Smart Air Quality Monitor is the only monitor available that enables on-demand ventilation, purification and filtration based on real-time air quality readings.

• Designed to pair with the Lennox S40 Smart Thermostat as part of a fully communicating home comfort system.  Not compatible with any other Lennox branded thermostat.
• Homeowner can see current overall air quality score and individual pollutants score (CO2, PM2.5 and VOC) on the S40 and on the Lennox Smart Thermostat app.  Homeowner can see visibility of what pollutant is driving air quality score.
• Air Quality score is simple to understand: Green = Good, Yellow = Fair and Orange = Poor.
• When fair or poor air quality is detected, the S40 will run indoor air quality equipment to clean the air. At minimum, the blower will run to circulate the air through the high efficiency filter (Carbon Clean MERV 16 is highly recommended).  If they have PureAir S, PureAir or an HRV/ERV, the S40 will run that indoor air quality equipment on-demand (as opposed to running at set-time intervals you set). That means the homeowner will have clean air when they need it.
• The Lennox Wireless Extender (sold separately) improves the connection between the S40 Smart Thermostat and the Smart Air Quality Monitor, in larger homes or areas with reduced coverage or “dead spots”. This strengthened connection nearly doubles the coverage area and thus enhances reliability, performance, and usability.

During the checkout process, you can choose from expedited services such as overnight delivery to standard ground shipping. We aim to ensure your order is delivered promptly and reliably, wherever you are.

All returns must be made within 30 days of purchase with the invoice. (After 30 days, Interlight credit only, Minimum 25% restocking fee, no returns after 60 days, special items order just for you are not returnable.)

At Interlight, your satisfaction is our priority. We offer a 30-day money-back guarantee on eligible products, provided they are returned in resalable condition with the original invoice.