Smart Thermostat HONEYWELL T6 Pro Smart TH6220WF2006/U | Montreal, Laval, Longueuil, South Shore & North Shore
The Honeywell T6 Pro Smart TH6220WF2006/U fills a very specific place in the line: that of the versatile connected thermostat, simple enough for the whole family and complete enough for most heating systems in Québec.
Quick facts
The Honeywell T6 Pro Smart TH6220WF2006/U fills a very specific place in the line: that of the versatile connected thermostat, simple enough for the whole family and complete enough for most heating systems in Québec. It controls a gas, oil or electric furnace, a hot-water coil, a hydronic system, steam or gravity heat, as well as a central heat pump. And for households already living in the Apple world, it works with Apple HomeKit.
A Wi-Fi thermostat for the widest range of systems
Many consumer smart thermostats are designed first for forced air. The T6 Pro Smart also covers hot-water installations, whether gas, oil or electric, as well as steam and gravity systems, still found in many older Montréal homes and plexes. It's a smart choice when you want to add remote control without changing your heating equipment.
On the staging side, it handles up to 2 heating stages and 1 cooling stage (2H/1C) on a heat pump, and up to 2H/2C on a conventional system. A two-stage furnace paired with a central air conditioner, or a heat pump with one stage of backup heat, is therefore well supported. Changeover between heating and cooling can be automatic or manual.
The T6 Pro Smart runs on 24 VAC, so it does not control electric baseboard heaters at 120/240 V, which require line-voltage electronic thermostats.
Scheduling and geofencing
The schedule can be set up directly on the thermostat or in the Resideo app. You can choose between 7-day, 5-2, 5-1-1, one-week or non-programmable options. Geofencing uses your phone's location to switch to away mode when you leave home and return to comfort when you come back. Contractors also have the Resideo Pro app, which makes remote support easier when you give us access.
Apple HomeKit and Amazon Alexa
The T6 Pro Smart works with Apple HomeKit and Amazon Alexa. You can ask for a temperature by voice, or include it in a scene or automation in your smart home, for example lowering the heat when you turn on “night” mode.
A clear touchscreen
The 6.89 sq in. backlit touchscreen shows the room temperature, the setpoint and the current mode. The thermostat's compact square format (103.6 x 103.6 x 28 mm) blends well with most decors, and the included cover plate hides the marks left by the old thermostat.
Optional wired sensors
Two wired sensors can complete the installation: the C7089U1006 outdoor sensor and the C7189U1005 remote indoor sensor. The indoor sensor is useful when the thermostat sits in a spot that isn't representative, like a hallway exposed to a front door. The outdoor sensor gives the thermostat the outdoor temperature.
Accuracy and setting ranges
Stated accuracy is ±0.5 °C (1 °F). The heating setpoint ranges from 4.5 to 32 °C and the cooling setpoint from 10 to 37 °C. A heating range that goes this low is handy for a house left empty in winter, a cottage or a rarely used space: the system holds a minimum temperature without heating for nothing.
Energy savings in winter
The T6 Pro Smart is ENERGY STAR certified according to Resideo. In practice, the savings come from scheduling and geofencing: lowering the setpoint by a few degrees during work hours and at night, then bringing the heat back up just before you wake up or get home. For a hot-water system, which reacts more slowly than a forced-air furnace, a well-set schedule lets you anticipate needs and avoid overheating.
Mounting on the UWP universal plate
The thermostat mounts on the UWP mounting system, standard across the Honeywell T series. The box includes the thermostat, the UWP mount, an installation adapter for an electrical box, the cover plate, screws and anchors, and the installation and user guides.
The T6 Pro Smart requires 20 to 30 VAC hardwired power with a common wire (C wire). Our technicians check the existing wiring; if there's no C wire, they add one or adapt the installation. They then configure the equipment type, stages and changeover mode, connect the thermostat to Wi-Fi and the Resideo app, and test heating and cooling with you.
Where the T6 Pro Smart fits in the line
For a quick comparison:
- The T6 Pro programmable without Wi-Fi offers similar logic, with buttons instead of a touchscreen and the option of battery power.
- The T6 Pro Smart shown here adds Wi-Fi, the touchscreen, geofencing, HomeKit and Alexa.
- The T10+ Pro goes further with RedLINK, wireless room sensors and humidity and ventilation management.
The T6 Pro Smart is therefore the ideal balance for anyone who wants remote control without paying for features they don't need.
Maintenance tips
Clean the screen with a soft, dry cloth. Keep the app up to date and check your schedule when the seasons change. On the system side, change the furnace filter regularly and have your heating equipment inspected every fall, before the first cold snap.
Technical specifications
- Stages: up to 2H/1C on a heat pump; up to 2H/2C on a conventional system
- Systems: 24 VAC gas, oil or electric warm air; hot-water coil; gas, oil or electric hydronic; steam or gravity
- Power: 20 to 30 VAC, hardwired with C wire
- Screen: backlit touchscreen, 6.89 sq in.
- Connectivity: Wi-Fi; Resideo app (and Resideo Pro for contractors)
- Compatibility: Apple HomeKit, Amazon Alexa
- Optional sensors: C7089U1006 wired outdoor, C7189U1005 remote indoor
- Programming: 7-day, 5-2, 5-1-1, one-week or non-programmable; geofencing
- Changeover: automatic or manual
- Accuracy: ±0.5 °C (1 °F); setpoints: heating 4.5 to 32 °C, cooling 10 to 37 °C
- Dimensions: 103.6 x 103.6 x 28 mm
- Colour: white
- Contents: thermostat, UWP mount, installation adapter, cover plate, screws and anchors, guides
- Certification: ENERGY STAR
AirGreen installs your T6 Pro Smart
AirGreen Inc. is a family HVAC business established for more than 15 years, holding an RBQ licence, with a showroom in Boucherville. For the sale and professional installation of the T6 Pro Smart on your furnace, hot-water system or heat pump, contact us. We serve Montréal, Laval, Longueuil, the North Shore and the South Shore.
Key facts: HONEYWELL T6 Pro Smart TH6220WF2006/U
Four things to know, then its ID card in twelve answers. “—” means the manufacturer does not publish it.
Is the HONEYWELL T6 Pro Smart TH6220WF2006/U compatible with your heating?
Two steps, thirty seconds. The verdict takes your system and your wiring into account.
Full compatibility table
The terminals behind the thermostat
Tap an element to see what it does. A working diagram, not a substitute for the manufacturer’s installation guide.
Try the HONEYWELL T6 Pro Smart TH6220WF2006/U before you buy
Raise the setpoint, change the mode: see how it responds.
How much good programming can save you
Set up your typical week. The math follows the rule published by Natural Resources Canada.
Winter, Rate Flex D and rebates: what this thermostat changes
With Hydro-Québec’s Rate Flex D, electricity costs less most of the winter and more during a few peak hours. A programmable thermostat does the work for you.
The sensor decides which room counts
An interactive drawing of what this kind of control does day to day.
The HONEYWELL T6 Pro Smart TH6220WF2006/U or its closest sibling?
The most useful comparison: the model right next to it in our catalogue.
The right thermostat in three questions
If this model is not the right one for you, the page says so and shows you which one is.
Products that go with the HONEYWELL T6 Pro Smart TH6220WF2006/U
Parts named in its spec sheet that we sell and install.
Installed and set up by our technicians, in five steps
What we do at your place, in order. The on-site estimate is free.
- 01InspectionEquipment, stages to control and existing wiring.
- 02C wireCommon wire added if the model needs it and it is missing.
- 03MountingWall base, terminal wiring, cover plate if needed.
- 04SettingsEquipment type, stages, dual energy and accessories.
- 05Start-upConnection, app, schedule and tests with you.
HONEYWELL T6 Pro Smart TH6220WF2006/U specifications
From the manufacturer’s sheet. Type a word: the list filters as you write.
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Frequently asked questions about the HONEYWELL T6 Pro Smart TH6220WF2006/U
Short answers, no detours.
What does the HONEYWELL T6 Pro Smart TH6220WF2006/U work with?
According to the manufacturer’s sheet: 24 VAC gas, oil or electric warm air; hot water coil; gas, oil or electric hydronic; steam or gravity.
Does it need a C wire?
Yes. It needs wired 24 V power with a common wire. If the wire is missing, our technicians add a conductor during installation.
Can it control electric baseboards?
No. It is a low-voltage (24 V) thermostat. 120/240 V baseboards need a line-voltage electronic thermostat.
Can it be controlled remotely?
Yes, over Wi-Fi.
Does it qualify for a rebate?
If you heat with natural gas from Énergir, an ENERGY STAR smart thermostat on Énergir’s list can qualify for $100 (up to 75% of the price). Have Énergir confirm the model before buying.
What is the warranty?
5 years, per the manufacturer’s information.
Does AirGreen install it?
Yes. We sell and install this product in Montréal, Laval, Longueuil, the South Shore and the North Shore. The on-site estimate is free.
No question matches. Call us at 514 316-2973.
Your thermostat, installed and set up by our technicians
We check your system and wiring, install the thermostat, connect it and program it with you. One visit, one installed price.


