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Sinopé thermostat: choosing and installing one
The load each model can handle, the wattage of your heaters, the Wi-Fi or Zigbee connection, the link with Hilo: what we check before installing a Sinopé thermostat.
In short
This guide explains how to choose a Sinopé thermostat for your electric baseboard heaters and what an electrician checks before installing it.
- STM-Électrique is Sinopé certified, and we install Sinopé baseboard thermostats.
- Before installation, we note the heaters the thermostat will control, their wattage, and the condition of the boxes and wires.
- For its TH1124WF model, Sinopé lists a maximum load of 4,000 W at 240 V; for the TH1123WF, 3,000 W.
- The manufacturer’s product page says they are compatible with Hilo.
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STM-Électrique, a Sinopé-certified electrician
STM-Électrique is Sinopé certified: that is the answer of Adam Chirola, our master electrician, when asked whether the company was certified or a partner.
On the product page of its TH1123WF and TH1124WF baseboard thermostats, Sinopé writes that installation must be done by a certified electrician and comply with the local and national electrical codes in force; the page doesn’t say which certification it means.
In Québec, the rule points the same way: the Régie du bâtiment reminds that a person may not carry out work on an electrical installation, even at home, without the appropriate licence.
Thermostats are among the small jobs we are asked to do most often, along with baseboard heaters.
Sinopé thermostats for baseboard heaters
For each model, Sinopé publishes the load the thermostat can control. These are resistive loads only: baseboard heaters, convectors, radiant ceilings.
| Model (Wi-Fi) | Maximum load at 240 V | Maximum load at 120 V |
|---|---|---|
| TH1123WF | 12.5 A, 3,000 W | 12.5 A, 1,500 W |
| TH1124WF | 16.7 A, 4,000 W | 16.7 A, 2,000 W |
For both models, the product page also gives a minimum load: 500 W at 240 V for a baseboard heater, a convector or a radiant ceiling. The thermostat runs on 120, 208 or 240 V.
Sinopé also has a Lite model, the TH1133WF. According to the manufacturer, it suits fan-forced heaters, electric baseboard heaters, convectors and radiant ceilings.
Choosing between these models isn’t about looks: it comes down to the wattage of the heaters the thermostat will control, in the next section. Hydro-Québec also advises choosing the thermostat according to the total wattage of the heaters it controls.
Mind the voltage: most baseboard thermostats run on 240 volts, a few on 120 or 208 V. Nothing like the low-voltage thermostat of a house heated by forced air.
Wattage and wiring: what we check before installation
Sinopé says to add up the wattage of the heating appliances connected to the thermostat: the total must stay under the model’s maximum load.
To estimate a heater’s wattage, the manufacturer gives a rule that applies to a 240 V installation: 250 W per foot of heater. A 6-foot heater therefore comes to about 1,500 W.
For the heater wattage each room needs, see our baseboard heater calculator.
The same calculation applies to its Lite model.
During the visit, we note for each thermostat the heaters that depend on it and their wattage, we look at the boxes and wires, and we check the Wi-Fi signal if you are aiming for a smart model. The measured wattage decides the model.
We also check the circuit that supplies the heating: the breaker, the wires and their connections. If the house has aluminum wiring, we tell you.
Total wattage matters the other way too: a single heater under 500 W at 240 V stays below the minimum load listed for these two models.
Thermostats to replace before winter?
We note the wattage of each heater and choose the model accordingly. The price is written in the quote, at no charge.
Send my quote requestThe app and the connection
Wi-Fi models connect directly to the home’s wireless network. Zigbee models need a Zigbee gateway, Sinopé’s GT130 or a compatible gateway.
Either way, the thermostat is added to Sinopé’s Neviweb app, for the most features, according to the manufacturer.
A smart thermostat with poor reception in the basement shows up during the visit: that’s why we check the Wi-Fi signal before choosing.
Sinopé and Hilo
On its product page, Sinopé presents its smart baseboard thermostats as compatible with Hilo.
Hilo works with Hydro-Québec’s Flex D rate. Hilo has its own thermostats installed by a master electrician it appoints; a compatible thermostat from another brand, like a Sinopé, is installed by an electrical contractor like us.
As of October 30, 2026, Hydro-Québec was offering Hilo program participants a bonus of up to $210 per eligible compatible device, in exchange for a 12-month commitment to take part in automation during peak events.
Everything about Hilo, its offer and the installation: our guide Hilo thermostats: installation on your baseboard heaters.
What we do
We install Sinopé models and Hilo-compatible thermostats; if you prefer another compatible model, we install it too.
Replacing a dial thermostat changes comfort: a dial lets the room swing around the temperature you want, while an electronic thermostat keeps it closer to the setting.
On the day of the work, the circuit is switched off, each thermostat replaced, connections redone where needed, then the power comes back. For a whole house, we generally go room by room.
How many rooms, which model, what condition the boxes and wires are in: that is what sets the price, written room by room in the quote before the work.
Everything we do on electric heating is on our page Baseboard heaters and thermostats.
Frequently asked questions
Can one Sinopé thermostat control two baseboard heaters?
Yes, if their total wattage stays under the model’s maximum load. Sinopé says to add up the wattage of the appliances connected to the thermostat: for its TH1124WF, the total must stay under 4,000 W at 240 V; for the TH1123WF, under 3,000 W.
Do Sinopé thermostats work with Hilo?
Sinopé presents its smart baseboard thermostats as compatible with Hilo. Several smart thermostats can be connected to Hilo, including some Sinopé models.
Do I need an electrician to install a Sinopé thermostat?
Yes. For its TH1123WF and TH1124WF thermostats, Sinopé writes that installation must be done by a certified electrician, in compliance with the electrical codes in force, without saying which certification it means, and in Québec, work on an electrical installation requires the appropriate licence. STM-Électrique is Sinopé certified.
Thermostats to replace before winter?
We note the wattage of each heater and choose the model accordingly. The price is written in the quote, at no charge.
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Get a quote: Sinopé thermostat
Sources
Consulted on November 5, 2026.