Honeywell YTH9421C1010 VisionPRO IAQ, Programmable Thermostat, 7 Day, Multi-Stage HE360A The next step is a

The next step is a 2-Stage Electrostatic Collecting Cell

Advanced dual-fuel control

This filter is non refundable***********

Looking for the HEPA filter for this unit see Part # 40193

Custom Sizes Available

Honeywell YTH9421C1010 VisionPRO IAQ, Programmable Thermostat, 7 Day, Multi-Stage HE360A The next step is aVisionPRO Indoor Air Quality (IAQ) touchscreen universal programmable thermostat provides electronic control of 24 volt (AC) heating and cooling systems in addition to humidification, dehumidification and ventilation with just three wires to the thermostat. Automatic or manual changeover, 4 heat 2 cool stages. Advanced dual fuel control. Three wires to living space allow for easy equipment upgrade without having to run additional thermostat wire. The