VisionPro IAQ Thermostat, Module, & Outdoor Sensor Zoom

VisionPro IAQ Thermostat, Module, & Outdoor Sensor

SKU:YTH9421C1010

Brand: Honeywell

Honeywell
Qty Price
$245.59
/ each
In Stock! Ships in 24-48 Hours
(14 Available)
4

Specs

Application: Heat Pump
Multi Stage (Heat/Cool)
Stages:
?
4 Heat/2 Cool Heat Pump
3 Heat/2 Cool
Programmability: 7 Day
User Interface: Touchscreen
Programmability: Programmable
Mount: Horizontal
Options: Auto Changeover
Large Display
Works with Sensor
Fan Control
Changeover: Auto
Manual
Power Method: Communicating
Temperature Range (F): 40°-99°F
Voltage:
?
Low voltage
Amperage:
?
0.6-1
Wattage:
?
12 to 30
Wiring: Vnt2
Vnt1
Dhm2
Dhm1
L
1
2
G
Y
Rc
3
Y2
R
Rh
C
Color: Premier White
Height: 4-9/16"
Depth (Inches): 1-1/4"
Width (Inches): 6"

Description for Honeywell YTH9421C1010

The VisionPRO IAQ touchscreen universal programmable thermostat provides electronic control of 24 Vac heating and cooling systems in addition to humidification dehumidification and ventilation all with just 3 wires to the thermostat.

  • Description: VisionPRO½ IAQ Total Home Comfort System with Temperature, Humidification, Dehumidification and Ventilation Control
  • Application: Heat/Cool or Heat Pump with Auxiliary Heat
  • Programmability: 7 Day Multiple Day Programming or Non-Programmable
  • Changeover: Auto/Manual Selectable
  • Color: Premier White½
  • Switch Positions (System): HEAT-OFF-COOL-AUTO-EM.HEAT
  • Switch Positions (Fan): AUTO-ON-CIRC
  • Power Method: Communicating
  • 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
  • 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): ª 1 F
  • Differential Temperature (C): ª0.5 C
  • Stages: Up to 4 Heat/2 Cool Heat Pump
  • Stages: Up to 3 Heat/2 Cool Conventional
  • Outdoor Sensor: Outdoor Sensor Included
  • Discharge Sensor: Yes, optional
  • Remote Sensor: Yes, optional
  • Sensor Element: Thermistor
  • Heat Current: 1.0 A running
  • Cool Current: 1.0 A running
  • Fan Current: 0.6A running
  • Operating Humidity Range (% RH): 5 to 90% RH, non-condensing
  • Includes: TH9421C1004 Thermostat, THM5421C1008 Equipment Interface Module and C7089U1006 Outdoor Temperature Sensor
  • 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.
  • Voltage: 20 to 30 Vac

VisionPro IAQ Thermostat, Module, & Outdoor Sensor

REVIEW SNAPSHOT®

by PowerReviews
HoneywellVisionPro IAQ Thermostat, Module, & Outdoor Sensor
 
4.8

(based on 5 reviews)

Ratings Distribution

  • 5 Stars

     

    (4)

  • 4 Stars

     

    (1)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Reviewed by 5 customers

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Displaying reviews 1-5

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5.0

Bought VisionPro IAQ to Replace PC8900

By ctbcubed

from Michigan

Verified Reviewer

Comments about VisionPro IAQ Thermostat, Module, & Outdoor Sensor:

I had a 13 year old Honeywell PC8900 system that was failing. I discovered the VisionPro IAQ and bought it as a replacement. It was easy to swap with the PC8900 and works great. My old system had an outdoor temperature sensor with model #C7089. This system came with an outdoor sensor with the same model #C7089 so I thought cool, I have a spare. Once I fired up the new system, it became clear that the old C7089 and the new one have different characteristics even though they share the same model number. My outdoor temperature displayed as 127 degrees! That's a bit warm for a mid November day in Michigan. As soon as I changed to the new C7089, I got a reading of 46 degrees, which is exactly what the outside temperature was.

 
4.0

So Far So Good

By Pablo

from Maryland, USA

Verified Buyer

Comments about VisionPro IAQ Thermostat, Module, & Outdoor Sensor:

I bought this with a Honeywell steam humidifier and an outside temperature sensor. Installation is simple enough - just choose any three of your thermostat wires for the wall unit to talk to the remote module you mount near your furnace. All the key connections run from the remote unit to your furnace, heatpump, humidifier, whatever. It pays to understand what the wire colors mean on your current system.

My main complaint is that the installation instructions are confusing. They clearly prefer that an HVAC tecnician install this. Oddly, the instructions that came with my TrueSteam humidifier were far clearer (though there are ~15 configurations to choose from). Download the installation instructions (on this site) from the humidifier if you have trouble.

The wire on the outside temperature sensor is only ~5 or 6 feet long. You'll need extra thermostat wire to make up for that.

 
5.0

Quick install, works well

By DynamoBen

from WI

Verified Buyer

Comments about VisionPro IAQ Thermostat, Module, & Outdoor Sensor:

Installation was quick using existing wire. Works well and is easy to use.

 
5.0

Works great, easy install

By MAZ

from Allentown, PA

Verified Buyer

Comments about VisionPro IAQ Thermostat, Module, & Outdoor Sensor:

After much research into programmable thermostats for my heat pump system, I selected this one and have not been disappointed. I was looking for a reliable thermostat with outdoor temperature sensor (for compressor lockout and frost protection) and humidification control. This seemed to be the best one available. I installed this about a month ago without any problems. Adding a humidifier a week ago was also easy. The only slight annoyance so far is the fact that the screen is not touch sensitive everywhere, only in certain regions (although there are a lot of them). This means that when the room is dark, you have to make sure you touch the screen in one of those regions to get the back light to come on. Not a big deal, but it caught me by surprise. One nice thing, however, is that the screen dimly glows all the time. You will never see it, however, until the room is dark. It is the perfect level to find it in the dark. I would recommend downloading the more complete "Product Data" sheet from Honeywell. It contains further explanations of the setup parameters and how they are used. It also details the output sequencing. It can be found at the Honeywell website: [@]

 
5.0

Best thermostat on the market bar none!!

By BKC

from Pittsburgh, PA

Verified Buyer

Comments about VisionPro IAQ Thermostat, Module, & Outdoor Sensor:

This stat does it all. And it simplifies wiring. Only 3 wires required between stat and Equipment interface module. I recomend this to everyone.

Displaying reviews 1-5

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Q&A: Ask the Questions, share answers

Do you have questions about this product?

get answers from real customers and in-house experts with AnswerBox.

3 Questions | 12 Answers
Displaying questions 1-3
  • VisionPro IAQ Thermostat, Module, & Outdoor Sensor

    Q:

    I'd like to use this to control a Honeywell dehumidifier installed in a crawlspace. Will I be able to monitor the humidity level in the crawlspace? Thank you
    Asked on 7/19/2013 by Royalacresrod from Tulsa OK

    2 answers

    • VERIFIED BUYER

      A:

      Only if the thermostat is installed within the crawlspace.

      Answered on 7/19/2013 by Anonymous
    • VERIFIED BUYER

      A:

      Yes, if the thermostat is placed in the crawlspace. However this seems to be overkill for a crawlspace and a simple humidistat on the dehumidifier would seem more cost effective.

      Answered on 7/19/2013 by Anonymous
  • VisionPro IAQ Thermostat, Module, & Outdoor Sensor

    Q:

    Can this unit control my new Honeywell Whole House dehumidifier AND central AC?
    Asked on 3/20/2012 by Brad

    9 answers

    • VERIFIED BUYER

      A:

      YES

      Answered on 7/11/2012 by Anonymous
    • VERIFIED BUYER

      A:

      The wire panel has 2 contacts for the dehumidifier, that is in addition to the AC, humidifier, fan, etc. So it should be able to. It's one of the reasons I bought this unit, but it's still on my todo list.
       
      Good luck.
      Sergiu

      Answered on 3/20/2012 by Another PexSupply Customer
    • VERIFIED BUYER

      A:

      It should be able to control both. I'm using mine with a Honeywell
      TruSteam, central AC & Heat.

      Answered on 3/20/2012 by Another PexSupply Customer
    • VERIFIED BUYER

      A:

      Yes, this will work with both an AC Unit and Dehumidifier. See the
      installation manual, pages 15 and 21:
      http://www.forwardthinking.honeywell.com/related_links/thermostats/prestige/69-2490.pdf

      Answered on 3/20/2012 by Another PexSupply Customer
    • VERIFIED BUYER

      A:

      Yes this unit can control your dehumidifier and your AC. I currently have
      mine working with my heat pump (heat and AC) as well as a dehumidifier.
      Make sure to understand how to connect the IAQ and how to set it up before
      committing to buying it.

      Answered on 3/21/2012 by Another PexSupply Customer
    • VERIFIED BUYER

      A:

      Hi,
      I don't have a  Whole House dehumidifier.  The unit controls the central AC and a fresh air intake. 
      Thanks,
      Igor

      Answered on 3/21/2012 by Another PexSupply Customer
    • VERIFIED BUYER

      A:

      Yes, there are contacts for both.

      Answered on 3/22/2012 by Another PexSupply Customer
    • CUSTOMER CARE

      A:

      It did for me, I have two of them. And the outdoor sensor is optional not necessary, I purchased the one without the outdoor sensor.

      Answered on 3/23/2012 by Another PexSupply Customer
    • VERIFIED BUYER

      A:

      I had a new furnace and central air installed last year.
      I added a Honeywell whole house dehumidifier and installed this unit to control it all.
      The installation of the unit was straightforward, but as I recall I had to do some hunting to find the manual to program the unit. I do not believe that it was included along with the unit. I believe I found it online at thesite.
      Of c, it depends on how much experience one has with understanding and installing something like this. It might be beyond the ability of the average homeowner.

      Answered on 3/23/2012 by Another PexSupply Customer
  • VisionPro IAQ Thermostat, Module, & Outdoor Sensor

    Q:

    Does the YTH9421C1010 t-stat come w/ the outdoor sensor or is it a separate item?
    Asked on 4/4/2011 by 73shark from Overland Park, KS

    1 answer

    • CUSTOMER CARE

      A:

      This item includes the C7089U1006 Outdoor Temperature Sensor.

      Answered on 4/4/2011 by PexSupply Staff from NY
Displaying questions 1-3

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