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Application - Conventional and Heat Pump systems Programmability - Universal Programming from 7 Day to Non-Programmable Changeover - Auto or Manual Color - Premier White® Switch Positions (System) - HEAT-OFF-COOL-AUTO-EM.HEAT Switch Positions (Fan) - AUTO-ON-CIRC Power Method - Power supplied by EIM Terminal Designations - 1, 2, 3, C, R, Rc, Rh, R, W1-O/B, W2-Aux, W3-Aux2, Y, Y2, G, L, Out1, Out2, In1, In2, Dats1, Dats2, Hum1, Hum2, Dhm1, Dhm2, Vnt1, Vnt2 Dimensions (in.) - 4 9/16 in. high x 6 in. wide x 1 1/4 in. deep Dimensions (mm) - 116 mm high x 152 mm wide x 32 mm deep Electrical Ratings - 20 to 30 Vac Setting Temperature Range (F) - Heat: 40 F to 90 F; Cool: 50 F to 99 F Setting Temperature Range (C) - Heat: 4.5 C to 32 C; Cool: 10 C to 37 C Differential Temperature (F) - ± 1 F Differential Temperature (C) - ±0.5 C Stages - Up to 4 Heat/2 Cool Outdoor Sensor - Yes, optional Discharge Sensor - Yes, optional Remote Sensor - Yes, optional Sensor Element - Thermistor Currents (Heating) - 1.0 A running Currents (Cooling) - 1.0 A running Currents (Fan) - 0.6A running Operating Humidity Range (% RH) - 5 to 90% RH, non-condensing Includes TH9421C1004 Thermostat and THM5421C1008 Equipment Interface Module Comments - Includes Humidification Control with or without Frost Protection, Dehumidification using Whole House Dehumidifier or Air Conditioning with High or Low speed fan, Advanced Patented Ventilation Control and Advanced Dual Fuel Heat Pump Control. Humidification Setting Range - 10 to 60% RH. Dehumidification Setting Range - 40 to 80% RH.Customers most agreed on the following attributes:
from Chicagoland on 12/27/2008
Comments about Honeywell Honeywell VisionPro IAQ Programmable MultiStage Thermostat with Total Home Comfort Control:
I went with this unit when I installed my new furnace. The "auto discover" recognized my 2 stage furnace and humidifier, so all I had to program was my settings. Install was a snap, we hardly needed the instructions.
from Leonardtown, MD on 12/1/2008
Comments about Honeywell Honeywell VisionPro IAQ Programmable MultiStage Thermostat with Total Home Comfort Control:
Installation was a breeze, just don't miss that the diagram does show the common ground being connected (C to C), like I did. I'm a total amateur and installed this thing with no problem. I hooked up the outside thermometer and the Honeywell TrueSteam Humidifier (HM509H8908) with no problem. You can buy the manual control humidifier because this thermostat does the controlling. I plan to add the ventilator at some point too.
[2 of 2 customers found this review helpful]
from Brookfield, IL on 4/19/2008
Comments about Honeywell Honeywell VisionPro IAQ Programmable MultiStage Thermostat with Total Home Comfort Control:
I used this model to replace an older thermostat and a separate humidistat. As an engineer, I like the basic idea of separating the output contact module from the control display, and installing the outputs close to the furnace. I really like that the optional outdoor sensor is used to automatically adjust the humidity level in the winter. It's also very useful in the mornings for quickly seeing the outside air temp. The display also serves as a handy night light. Very easy to install and program. I also like the resetable reminders for filter, humidifier pad, and UV light replacement. It also automatically circulates air in the house, independent of heat or cooling requirements. But I highly recommend the outdoor sensor option to take full advantage of its humidity controls.
from Lyford, Texas on 4/15/2008
Comments about Honeywell Honeywell VisionPro IAQ Programmable MultiStage Thermostat with Total Home Comfort Control:
Fantastic climate control with immediate monthly electric bill cost reduction.
from State College, PA on 4/11/2008
Comments about Honeywell Honeywell VisionPro IAQ Programmable MultiStage Thermostat with Total Home Comfort Control:
Unit was easy to install and setup. There are quite a few settings built into the unit but manual made it simple. I use the thermostat to control our A/C, humidifier, fan (no heat). My only wish is for the cycle time for air circulation (to filter the air) was adjustable. It is fixed at a 35% duty cycle.