Name: T9 Smart Wi-Fi Programmable Thermostat - With 7 Day Scheduling
Brand: Honeywell
SKU: 1GBGY407Q797
Price: 184.99 CAD
Availability: OutOfStock
Rating: 3.5 (252 reviews)

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T9 Smart Wi-Fi Programmable Thermostat - With 7 Day Scheduling

<ul><li><strong>Remote Temperature Adjustment</strong>: Adjust your thermostat from anywhere.</li><li><strong>Geofencing Schedule Integration</strong>: Home reacts to your schedule with geofencing.</li><li><strong>Smart Alert Notifications</strong>: Receive smart alerts if the home is too hot or too cold.</li><li><strong>Optimal Temperature Delivery</strong>: Thermostat learns heating and cooling cycle times to deliver the optimal temperature at the right time.</li><li><strong>Filter Change Reminders</strong>: Reminds you to change your filters when needed.</li></ul>

Adjust your thermostat from anywhere, or let the home   react to your schedule with geofencing||Smart alerts let you know if the home is too hot or too cold so you can take action||Thermostat learns your home's heating and cooling cycle times to deliver the optimal temperature at the right time||Reminds you to change your filters when you need to

Thermostat Type

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Compatible Smart Control Systems

Control Type

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Assembled Product Dimensions (L x W x H)

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T9 Smart Wi-Fi Programmable Thermostat - With 7 Day Scheduling Honeywell

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Ease Of Installation

Mobile App

Sensors

Temperature

Ease Of Use

Instructions

Connectivity

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Programming

Reading

Price

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Integration

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Frequently loses connection and has difficulty staying connected to wi-fi and app.

Can be accurate, but may drop offline or show inconsistencies.

Temperature readings can be unreliable and difficult to control.

Offers seamless remote access, but can be slow and glitchy.

Takes around 15 minutes with minimal issues.

It's awesome wish I would have changed my thermostat sooner it keeps the house much cooler in summer haven't used in winter yet just had it installed this summer.

T-9 Thermostat

resideo.com

I have one in each of our homes, and they are awesome. I can monitor the tempature when I am away and set vacation tempatures to save money.

A brilliant smart home addition

Purchase the T9 w/1 remote sensor. Fairly easy to install on my 2010 Carrier HVAC which has the "C" wire.  The instructions are simple enough but I do recommend reading it completely. Used my iphone with their APP which seems to work well and has not crashed or locked up.  The remote sensor (2 AAA battery included)  does exhibit long Hysteresis which I feel is good to prevent temperature flapping. It also has IR occupancy sensing that can be turned off.  Been in use for about 10 days now, and so far its been reliable and works consistently. For those IT technicals, your WIFI AP must support peer to peer discovery otherwise the Smart phone app will not be able to discover it.

Reliable product

The setup options are limited. The issue is that if I want to use geofencing mode, I'm not able to set different temperatures at different times of the day while I'm at home. I use Arlo cameras and I can combine a schedule with the geofencing option.

Joey

It's a great tstat when it works. I have had multiple times watching it reset. Sometimes it just turns off and I get up and pull it off to reset it. I'm probably going to get a power monitoring meter with data recording so I can prove to honeywell that the Stat socks and it's not the furnance.

Great stat when it works

Maria

I have used T9 thermostats on my two Carrier HVAC units since 2020.  Two issues: 1) On HVAC unit #1 there is a large temperature overshoot when heating. For example, assume the set point is 73 F. The temperature shows 73 F when I hear the furnace stop firing. But by the time the fan stops the temperature reaches 77- 78 F. I wish that there was a tuning parameter that I could adjust to make the furnace kick off a bit sooner so as to reduce the overshoot. The performance when cooling is reasonably good.   2) On HVAC unit #2 the T9 reboots almost every cycle at about the time that the set point is reached.  The T9 on HVAC #1 rarely reboots. The company that installed my HVAC units says that rebooting is the fault of the thermostat. On the plus side, the display is great - easy to read. And the APP is very good. For me, I've learned to live with the T9's limitations. However I would be reluctant to recommend it.

Temperature Overshoot When Heating

The heating and cooling functions work fine but if you need a thermostat to control ventalation or a humidifer using a U1 or U2 connection, this is not the one for you. While the wiring diagrams and images on this site show it has U1 and U2 wire connectors, when I received my thermostat, it does not. The installation instructions say very clearly it will not work for U wire connections. So... which is it?
It is very misleading to show the connections. Had I not needed to use the new thermostat for heat because it was -4 degrees outside and I was going out of town, I would have definitely returned it just because I don't appreciate the inaccuracy, whatever the reason.

Disappointed - No U1 or U2 wire connections

I had the T9 w/ 1 sensor installed for 3 days. The AC would run for 6-10 minutes, turn off for 7-12 minutes and cycle like that over & over. I tried moving the sensor to different places and setting only the thermostat and/or/only sensor as the priority temp reading. The thermostat software algorithm that is supposed to learn needs a lot more work. This run rate will wear out the HVAC equipment a lot faster than my high end non wifi thermostat I just re-installed. My 5 year old high end thermostat that has compressor lock out and differential - cool swing - heat swing settings, runs the AC for 12 - 14 minutes and stays off for about 40 minutes. The house stays very comfortable and my equipment is not turning on/off 5 times more an hour.

Needs more work!

Difficult to install, once installed temperature isn't accurate and changes arbitrarily, difficult to sync with app, app still has no control over thermostat, go to bed set on 76 (which is much colder than 76), wake the next morning to 70. Worst ever

I installed this 4 days ago. Installation was easy as I had an unused C wire on my existing old, round, dumb Honeywell thermostat. I also had no problems connecting to the internet or using the app.  

I have two issues with the unit. First of all, the display temperature will round to the set temperature when they are within +- 1.5 apart meaning that it always appears that the room temperature is equal to the set temperature when the unit is not off. This is very misleading since it does not represent the actual room temperature the unit is using to turn on/off. 

The second gripe I have with the unit is that the user cannot control the temperature differential. I am not sure if this thermostat uses 1 or 1.5. Regardless, my AC was running less than 10 minutes most of the time and coming on in 10 minutes.  There were times that the unit came on for less than 1 minute (not even sure why this was).  Short cycling is not good for HVAC equipment. 

Between the inaccurate room temperature display and the short cycling, I have uninstalled this unit and installed a smart thermostat from a different manufacturer. I was able to set the differential manually. Now my AC will run for 13-15 minutes and go off for about 20 minutes.  In addition, the replacement unit has a compressor minimum run time default of 5 minutes which eliminates short cycling. It also has a feature to let the fan run a little longer after the end of the cycle to dissipate any air left in the duct. 

It's a no brainer that the T9 is not worth the money.

Can't fine tune important HVAC settings