Prestige IAQ Kit with RedLINK (Includes White Thermostat, EIM, Wireless Outdoor Sensor & 2 Duct Sensors) Zoom

Prestige IAQ Kit with RedLINK (Includes White Thermostat, EIM, Wireless Outdoor Sensor & 2 Duct Sensors)

SKU:YTHX9421R5101WW

Brand: Honeywell

Honeywell
Qty Price
$264.99
/ each
In Stock! Ships in 24-48 Hours
(35 Available)
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Resources

Specs

Color: White
Application: Multi Stage (Heat/Cool)
Heat Pump
Stages:
?
3 Heat/2 Cool
4 Heat/2 Cool Heat Pump
Programmability: Programmable
7 Day
User Interface: Touchscreen
Voltage:
?
24v
Features: RedLINK Enabled
Humidification & Dehumidifcation Control
Ventilation Control
Power Method: Hardwired
Changeover: Manual
Auto
Humidity Control: Yes
Wireless: Yes
Mount: Horizontal
Options: Keypad Lockout
Auto Changeover
Comes with Sensor
Fan Control
Large Display
Application: Internet control of RedLINK thermostats
Warranty: 5-Year Warranty
Humidity Control: Yes
Wireless: Yes
Voltage:
?
24v

Description for Honeywell YTHX9421R5101WW

Overview

  • Redesigned Prestige 2-wire IAQ kit with RedLINK technology. For Residential or commercial use.
  • Kit Includes:
    • White Prestige IAQ Thermostat (THX9421R5021WW)
    • Equipment Interface Module (THM5421R1021)
    • Wireless Outdoor Sensor (C7089R1013)
    • 2 Duct Sensors
  • RedLINK Enabled
  • 7 Day Program
  • Up to 4H/2C Heat Pump
  • Up to 3H/2C Conventional
  • Controls Humidification, Dehumidification and Ventilation
Features
  • Easy to program and use
  • Customizable high-definition, full-color display which is smaller and sleeker - 60% smaller footprint
  • High-gloss acrylic frame in four color combinations
  • Get email alerts for things like poor system efficiency or water leaks
  • On-screen or email reminders for filter replacement, seasonal maintenance and more
  • Answer a few questions and the system will self-program
  • Prestige also learns how long it takes to heat or cool your home; simply set the time and desired temperature and the system will run only long enough to reach desired level
  • Remote monitoring - Easily control multiple buildings from a PC, tablet or smartphone
  • Self-monitoring diagnostics - Sends alerts for needed maintenance and service issues
  • Total solution - Integrates occupancy sensors, lighting controls and other HVAC/IAQ systems
  • Building code compliant - Meets all commercial building codes, including Title 24
  • Temperature set point limits and keypad lock out lets you manage energy usage for maximum savings
  • 365-day scheduling - Program up to 25 custom events
  • Save energy in infrequently used rooms
  • Adjustable ramp rates
  • Retrofit existing controls - Replace inefficient HVAC controls with RedLINK wireless management system
  • Includes diagnostics and alerts - Quickly identify HVAC system issues
  • User interaction, alert, and temperature performance logs - To aid diagnostics and speed service calls
  • Low installed system cost with no monitoring fees
  • Honeywell's Total Connect Comfort service lets you manage your system remotely with a computer, tablet or smartphone
  • RedLINK wireless accessories such as sensors and remotes help you easily optimize comfort throughout your home
  • RedLINK Internet Gateway with Total Connect Comfort Services Once installed by your heating and cooling professional, go online to register your account and customize your system and alert settings. Free apps available for Apple and Android devices.

Prestige IAQ Kit with RedLINK (Includes White Thermostat, EIM, Wireless Outdoor Sensor & 2 Duct Sensors)

REVIEW SNAPSHOT®

by PowerReviews
HoneywellPrestige IAQ Kit with RedLINK (Includes White Thermostat, EIM, Wireless Outdoor Sensor & 2 Duct Sensors)
 
4.8

(based on 12 reviews)

Ratings Distribution

  • 5 Stars

     

    (10)

  • 4 Stars

     

    (2)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Reviewed by 12 customers

Displaying reviews 1-10

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5.0

Great kit for hydronic systems as well.

By D Mitchell

from Massapequa, NY

Verified Buyer

Comments about Prestige IAQ Kit with RedLINK (Includes White Thermostat, EIM, Wireless Outdoor Sensor & 2 Duct Sensors):

My application is to control the main zone of my home. I have baseboard hydronic heating and just installed steam humidification for the winter.

I installed a Honeywell TrueSteam humidifier connected to copper pipe to vent in the living space. While the instructions for both the humidifier and the Prestige IAQ did not clearly example my situation, there was enough documentation to get the job done.

Next step is to interface the Prestige IAQ to my Mitsubishi Mr Slim indoor unit to control air conditioning as well.

 
4.0

installed myself and so far think it is great

By Pinky

from Independence MN

Verified Buyer

Comments about Prestige IAQ Kit with RedLINK (Includes White Thermostat, EIM, Wireless Outdoor Sensor & 2 Duct Sensors):

love the ability to automatically set humidity level so the windows don't ice up.

 
5.0

Works well so far

By Scott

from Dallas TX

Verified Buyer

Comments about Prestige IAQ Kit with RedLINK (Includes White Thermostat, EIM, Wireless Outdoor Sensor & 2 Duct Sensors):

We live in Texas so they put all of our AC systems up in the attic. Here in North Texas the air gets really dry during the winter so we added humidifiers in the attic. We never know when they have an issue unless we go into the attic, this is a problem in freezing weather. We've tried cameras and other approaches with little success.

We decided to try this product out to monitor the humidifiers.

This product exceeds expectations. Took about an hour to hook up, another ten minutes for the outdoor sensor. So far, it's been very impressive. It will run the air exchangers when the humidity in the house is too high (didn't expect this), shows outdoor humidity and air temp, easy to configure humidity settings for keeping humid air in the house.

Thinking about purchasing the zoning system for the other two units.

If only the TrueSteam humidifiers could work so well.

 
4.0

Easy installation, very capable IAQ thermostat

By Buzz Lightyear

from Prior Lake, MN

Verified Buyer

Comments about Prestige IAQ Kit with RedLINK (Includes White Thermostat, EIM, Wireless Outdoor Sensor & 2 Duct Sensors):

I purchased the Redesigned Prestige IAQ thermostat after being impressed with the Honeywell VisionPro series stat I had in my previous home. Both use the same "smart thermostat communicating with a remote equipment interface module" concept and are "IAQ" (indoor aqir quality) thermostats, meaning they perform centralized control of not just the heating and cooling but also humidifiers, air exchangers, etc. I decided to go with the Prestige this time because I find the current VisionPro's sparse LCD to be rather ugly in comparison with the color touchscreen of the Prestige.

Installation was very straightforward. I am not a HVAC pro but have basic low-voltage and electronics experience. I easily followed the included instructions to integrate an Aprilaire humidifier and RenewAire ERV with a fairly recent Trane residential furnace and AC. The software is very flexible and easily integrates with single or multi-stage heating and cooling systems, humidifiers and ERVs, both powered and non-powered. Guided setup walks you through all of the important settings, mapping of devices to contacts, pairing of the wireless accessories, etc. Not everything is mentioned in the manual, though. I was pleased to find that the stat has settings to control whether it or the accessory equipment controls the blower. You can also extend the blower runtimes of each cycle, set desired cycles per hour, set ventilation requirements based on square footage of the home, automatically adjust the humidity level based on the outside temperature to avoid condensation on windows, etc. The system can also perform delta T monitoring via the included supply and discharge sensors to perform more efficiently and detect equipment problems early.

While this is a very good thermostat, I would have preferred a wired connection between the equipment interface and thermostat console like the older VisionPro models used to have. It feels risky having operation of the entire system resting on the reliability of a 900 MHz wireless link during sub-zero weather in Minnesota, where the consequences of failure could be extreme and costly.

Also, for the price, the LCD could be slightly larger and a little crisper. One gets spoiled with all the slick "retina" displays on mobile devices these days, and this display is a bit smaller, older and grainier looking in comparison.

The ability in the installer-level menus to "lock out" (inhibit) automatic ventilation based on temperature is also a bit limited; it would be nice to be able to set the upper limit to around 60 degrees, the threshold where one tends to start opening windows instead of running the air exchanger, but the upper temperature range setting does not extend low enough to support this. But since the firmware is upgradeable via USB, maybe this could be addressed at some point.

(1 of 1 customers found this review helpful)

 
5.0

Wonderful, easy to use wifi thermostat

By Shopper

from Cherry Hill, NJ

Verified Buyer

Comments about Prestige IAQ Kit with RedLINK (Includes White Thermostat, EIM, Wireless Outdoor Sensor & 2 Duct Sensors):

I had this thermostat in my previous home that had a 2 zone heating A/C system. and loved it. In addition to being very easy to program and operate, I could control the temperature with the remote control from anywhere in the house, upkstairs or downstairs.
The thermostat has a very clear easy to read screen that gives temperature and humidity both indoors and outdoors. The brightness can be easily adjusted and can be programmed to dim out and comes on when you touch the screen. The on-screen menu is amazingly easy to follow. I never had to refer to the Instruction booklet, and I am not very technically savvy.
I liked this thermostat so much that I just bought another and had it installed in my new home to replace the existing thermostat. I

(1 of 2 customers found this review helpful)

 
5.0

Works like a charm!

By David at Mack

from Fort Myers, FL

Verified Buyer

Comments about Prestige IAQ Kit with RedLINK (Includes White Thermostat, EIM, Wireless Outdoor Sensor & 2 Duct Sensors):

Easy to install. Easy to program.

(1 of 1 customers found this review helpful)

 
5.0

Does everything I wanted

By Northwoods Lindy

from Bayfield, WI

Verified Reviewer

Comments about Prestige IAQ Kit with RedLINK (Includes White Thermostat, EIM, Wireless Outdoor Sensor & 2 Duct Sensors):

I purchased the Prestige IAQ kit with red link gateway to control a high efficiency FA furnace and whole house (DR90) dehumidifier. I also wanted to control/monitor my HVAC system while away. This thermostat has handled the multiple HVAC functions I have now, and has capabilities to control additional features I wish to add in future. The internet connection gateway works very well, is convenient and easy to use. Although PRO install is recommended, the Prestige kit is not too difficult for many homeowners to install if proper research, time and care are exercised.
Suggestions to Honeywell I would make: the thermostat occasionally has to reset (blank screen, then reboot) itself when I enter a longer series of commands quickly. This suggests a need for increased memory or speed capability for its "CPU" chip. I would also add a feature on the main screen that gives dehumidifier status (on/idle) That said, I would recommend this thermostat for easy/convenient control of multiple HVAC functions, plus remote monitoring and control.

(1 of 1 customers found this review helpful)

 
5.0

Very robust system for the money

By James

from Arlington, TX

Verified Buyer

Comments about Prestige IAQ Kit with RedLINK (Includes White Thermostat, EIM, Wireless Outdoor Sensor & 2 Duct Sensors):

I purchased this kit and the THX9421R5021WW kit for my home as I was having two systems installed (upstairs & downstairs). For my setup each unit got a thermostat and EIM while the wireless outdoor sensor and RedLINK gateway where shared for both units.

At first the thermostat seemed much smaller than the picture suggests, but all buttons are easy to read and press. Setup was straight forward but I have knowledge of how HVAC systems work and I READ THE INSTRUCTIONS COVER TO COVER. Reading the instructions will show you how powerful this system is and it's limitations on unique setups.

I liked how the thermostat runs on 24VAC power but has a coin battery for keeping time in case power is lost. It only requires two wires to run the thermostat as all signals are wireless to the EIM. The thermostat can display indoor humidity and outdoor temp & humidity if outdoor sensor is used. Background colors can be changed easily but background graphics are fixed.

I love the Circulate feature on the fan. It will run the fan randomly 35% of the time. This is a great feature during spring and fall when our indoor temperature is comfortable and doesn't run the unit for days or weeks. It allows air to move around the house and trap allergens/pollen in the air filter. Yes this could be accomplished by setting the fan to "on" but i like the energy savings.

The EIM is mounted next to the furnace/air handler. It receives and transmits wireless information and controls the furnace/air handler via hard wires. The EIM has programmable inputs and outputs that can be used for a variety of purposes. I have the supply and return duct sensors wired to the input ports so the thermostat can keep track of the Delta T. That basically means it's tracking the difference in air temperature before and after the heat/cool is added. Knowing the normal change in temperature can be a powerful diagnostic tool if the delta T goes out of a selected range.

Other inputs can be wired to the EIM like a secondary drain pan float that indicates the primary drain is clogged. These inputs can be programmed to show on the thermostat screen if desired when triggered. You can even add wireless indoor sensors in other places in your home so the thermostat can average the temperature. That might help homes with large temp variations from one side to the other. Outputs to control whole home humidifiers, dehumidifiers, and ventilation can also be controlled with the thermostat.

The RedLINK internet gateway allowed both of my thermostats to be controlled by my Android phone via a free Honeywell app. Unfortunately you have to connect thru a website, even in your own house. It's not smart enough to view and control the units directly but it seems to work fine.

The only problem we had so far is the wireless outdoor unit stopped working 3 weeks after installation. Supply House allowed us to return the defective unit on their dime and sent us a new outdoor sensor free. Everything has been working well since. I think this is the best unit on the market for the price for everything it can do.

 
5.0

I have bought this thermostat again

By Uncle Yo

from Towanda, PA

Verified Buyer

Comments about Prestige IAQ Kit with RedLINK (Includes White Thermostat, EIM, Wireless Outdoor Sensor & 2 Duct Sensors):

I have used this thermostat in my home and in 3 commercial operations and 5 home settings. The stat is easily programmed and hooks up wirelessly to the accessories. I can turn my heat down when I'm away and when I'm on my way back, I can turn it back to normal, all from my smart phone.

(1 of 1 customers found this review helpful)

 
5.0

Honeywell Prestige IAQ Kit

By wvpayne

from Berryville, VA

Verified Buyer

Comments about Prestige IAQ Kit with RedLINK (Includes White Thermostat, EIM, Wireless Outdoor Sensor & 2 Duct Sensors):

I have installed two of these kits in two-speed, air source heat pump systems. The setup allows you to minimize the use of the auxiliary heat (electric strip heat) which kills your heating efficiency. Many thermostats have a timeout function that will automatically engage auxiliary heat after a set time even when the heat pump is bringing the indoor temperature up. This Prestige has the timeout function, but it can be disabled easily and allows you to set a max temperature difference before the auxiliary heat is engaged. I use a 3F to 5F temperature difference before electric auxiliary heat is engaged. You can also use the Universal output pins to control systems that dehumidify by lowering the indoor blower speed and need a 24VAC signal to drop low (turn off) to signal dehumidification is needed. This is just a great thermostat, and it looks great. Plus if you add a Redlink wifi interface you can connect the Tstat to your home network.

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Q&A: Ask the Questions, share answers

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9 Questions | 10 Answers
Displaying questions 1-9
  • Prestige IAQ Kit with RedLINK (Includes White Thermostat, EIM, Wireless Outdoor Sensor & 2 Duct Sensors)

    Q:

    Is this appropriate for use with a TrueBreeze VNT5150E1000? Does it provide specific functions for the ventilator? If not, what is a better choice?

    Thanks!
    Asked on 10/12/2015 by Fetzervalve

    1 answer

  • Prestige IAQ Kit with RedLINK (Includes White Thermostat, EIM, Wireless Outdoor Sensor & 2 Duct Sensors)

    Q:

    How are warranty issues with this product handled?
    Asked on 3/25/2015 by JDM from Philadelphia, PA

    1 answer

    • CUSTOMER CARE

      A:

      first thru Honeywell's tech to verify that the unit(s) are defective and then through us, we process the return and replacement.

      Answered on 3/27/2015 by Supplyhouse Staff from New York
  • Prestige IAQ Kit with RedLINK (Includes White Thermostat, EIM, Wireless Outdoor Sensor & 2 Duct Sensors)

    Q:

    Is the Honeywell Prestige Thermostat generally comptiable with any 2 wire 'communicating' HVAC product or will it only work with specific brands of Equipment.

    I am interested in using it with an Amana Comfortnet comptible furnance and a old school Heat Pump. Will the Honeywell work, or do I need to stick with Comfortnet/Amana branded Thermostats?
    Asked on 3/16/2015 by Jim from PA

    1 answer

    • CUSTOMER CARE

      A:

      when paired w the EIM it will work w any system that uses 24V controls.

      Answered on 3/17/2015 by Supplyhouse Staff from New York
  • Prestige IAQ Kit with RedLINK (Includes White Thermostat, EIM, Wireless Outdoor Sensor & 2 Duct Sensors)

    Q:

    I want to use this thermostat to control a Honeywell whole house humidifier that is red link enabled. What other components will I need to do this?
    Asked on 1/15/2015 by Tech guy from Chattanooga, tn

    1 answer

    • CUSTOMER CARE

      A:

      usually nothing else, but it depends on what other accessories you have

      Answered on 1/21/2015 by Supplyhouse Staff from New York
  • Prestige IAQ Kit with RedLINK (Includes White Thermostat, EIM, Wireless Outdoor Sensor & 2 Duct Sensors)

    Q:

    I want to use this thermostat to control a Honeywell whole house humidifier that is red link enabled. What other components will I need to do this?
    Asked on 1/15/2015 by Tech guy from Chattanooga, tn

    1 answer

    • CUSTOMER CARE

      A:

      if that is all you are controlling nothing

      Answered on 1/16/2015 by Supplyhouse Staff from New York
  • Prestige IAQ Kit with RedLINK (Includes White Thermostat, EIM, Wireless Outdoor Sensor & 2 Duct Sensors)

    Q:

    Is this a wifi controllable thermostat?
    Asked on 10/22/2014 by Daniel from Chicago

    1 answer

    • CUSTOMER CARE

      A:

      This unit requires the Redlink internet Gateway, part THM6000R1002 for internet connectivity.

      Answered on 10/22/2014 by SupplyHouse Staff from NY
  • Prestige IAQ Kit with RedLINK (Includes White Thermostat, EIM, Wireless Outdoor Sensor & 2 Duct Sensors)

    Q:

    Can I use the outdoor sensor to control a baseboard heating unit and what would I need to set it up? Thanks -KC
    Asked on 8/6/2014 by KC from Killington, VT

    1 answer

  • Prestige IAQ Kit with RedLINK (Includes White Thermostat, EIM, Wireless Outdoor Sensor & 2 Duct Sensors)

    Q:

    Is this thermostat compatible with a modulating furnace?
    Asked on 4/14/2014 by Mamula

    1 answer

    • CUSTOMER CARE

      A:

      Yes, this thermostat can be used with such a furnace.

      Answered on 4/18/2014 by Supplyhouse.com Staff from New York
  • Prestige IAQ Kit with RedLINK (Includes White Thermostat, EIM, Wireless Outdoor Sensor & 2 Duct Sensors)

    Q:

    I am installing 4 of these thermostats. Do I need 4 Wireless Outdoor Sensors (C7089R1013), or will one of them connect to all 4 of the thermostats?
    Asked on 4/25/2013 by mike

    2 answers

    • CUSTOMER CARE

      A:

      You only need one sensor. Each C7089R1013 sensor works with an unlimited number of RedLINK thermostats within its RedLINK signal range.

      Answered on 5/2/2013 by PexSupply Staff from NY
    • A:

      The one outdoor sensor will relay outdoor temp and humidity info to the EIM. The EIM will then send temp and humidity readings to all the thermostats.

      Answered on 12/4/2014 by Mechanic57 from New Jersey
Displaying questions 1-9

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