Tag: Lennox L3021H

Lennox L3021H Non-Programmable Thermostat Description The Lennox ComfortSense  3000 Series model L3021H non-programmable electronic thermostat is easy-to-use, has a large, easy-to-read display, and provides excellent temperature control. The thermostat also includes a programmable filter change reminder, and a system check indicator which will notify the user of the need for equipment service. Thermostat model L3021H…