The short version: Mysa is a line-voltage smart thermostat built specifically for electric baseboard, convector, and in-wall fan-forced heaters — the resistance heat found in a lot of Northeast US homes, camps, and older multi-family buildings that a standard ecobee or Nest can’t touch. It connects straight to Wi-Fi with no hub, supports Apple HomeKit (rare for this category), and now ships through Copeland’s US distribution partnership rather than being a Canada-only product. If you have electric baseboard heat, it’s the best-documented option currently sold in the US.

Who It’s For

Mysa only works with line-voltage electric resistance heating: baseboard heaters, electric convectors, and in-wall fan-forced heaters. It does not control a gas furnace, heat pump, or central forced-air system — for those, see our ecobee or Nest reviews.

In the US, that narrows the audience to a specific but real group: homes in the Northeast (New England, upstate New York) built with electric baseboard as the primary heat source, all-electric apartments and condos, and cabins or camps that rely on baseboard or convector heat. If your thermostat controls a single room’s baseboard heater rather than a whole-house furnace, this is the category you’re shopping in.

Mysa is a Canadian company (Empowered Homes, based in St. John’s, Newfoundland), a market where electric baseboard heat is far more common than in most of the US. That history shows in the product: it was designed around baseboard heat first, not adapted from a central-HVAC thermostat.

Design & Build

The thermostat is a compact white unit with a small circular LED display showing set and current temperature. It’s understated by design — it reads more like a light switch than a tech gadget on the wall. A touch ring around the display lets you adjust temperature by hand without opening the app.

Build quality is solid. The mounting plate goes on first, and the thermostat snaps onto it and stays put. The LED display is easy to read up close but can wash out in a brightly lit room from across the space.

Setup & Compatibility

Voltage: The current hardware generation handles both 120V and 240V baseboard circuits in one device — you select the voltage in the app during setup. Maximum load is roughly 3,600–3,800W (around 16A), which covers the vast majority of individual baseboard and convector circuits. If you’re running two heaters off one thermostat, add up the wattage first.

Wiring: Mysa requires 4 wires in the thermostat box (line, load, neutral, and ground). Many older homes only have 2-wire baseboard circuits — if that’s you, Mysa isn’t compatible, and there’s currently no equally well-documented 2-wire smart option widely sold in the US (Sinopé, which supports 2-wire, is largely a Canada-only retail product). Pull your existing thermostat’s faceplate and count the wires before buying.

No C-wire, no hub: Mysa connects directly to 2.4GHz Wi-Fi. No bridge or hub is required, unlike some Zigbee-based line-voltage thermostats.

Installation: This is line-voltage electrical work, not low-voltage HVAC wiring. Turn off the breaker, verify power is dead with a voltage tester, and follow the in-app wiring walkthrough. If you’re not confident working with line voltage, or your local code requires a licensed electrician for thermostat replacement, hire one — the safety margin for error is smaller than with a low-voltage forced-air thermostat.

App & Ecosystem

The Mysa app (iOS and Android) covers weekly scheduling with per-day customization, geofencing (heat drops when your phone leaves a set radius, resumes on return), energy reporting in kWh with cost estimates, and freeze protection — a minimum-temperature floor that stays active even in “off” or “away” mode, useful for a camp or vacation property you don’t want to freeze pipes in over winter.

Smart home support:
– Apple HomeKit: Full native support. This is Mysa’s standout feature in the baseboard category — no other widely available line-voltage thermostat offers it.
– Google Assistant: Supported
– Amazon Alexa: Supported
– Samsung SmartThings: Supported

If multiple Mysa units are installed (common in a baseboard home, since each room typically has its own thermostat), the app shows all zones on one dashboard with independent schedules per room.

Buyer Feedback: What We Found

Owner feedback for Mysa’s baseboard line is generally positive on the fundamentals: retailer reviews and installer feedback describe it as one of the few smart thermostats that actually works with line-voltage baseboard heat, with detailed step-by-step installation instructions and responsive customer support when buyers had wiring questions. The most consistent complaint is around Alexa pairing — a handful of buyers report the Alexa-skill linking flow is less smooth than Mysa’s own app setup. We didn’t find evidence of widespread reliability or Wi-Fi dropout complaints on the scale sometimes reported for cheaper Tier 2 baseboard thermostats.

Price & Value

Mysa Baseboard/Convector
Price (USD) ~$130–170 per thermostat
Warranty 2 years
Subscription None
Hub required No

For a home with several baseboard zones, cost adds up fast — three rooms means $390–510 before installation. There is no cheaper mainstream competitor with the same feature set currently sold at US retail; budget-tier “clone” thermostats for line-voltage heat exist on Amazon but come with far less verifiable reliability data.

Pros & Cons

Pros:
– Handles 120V and 240V baseboard, convector, and fan-forced circuits in one device
– Apple HomeKit support — unique in this category
– No hub or C-wire required
– Real energy reporting and freeze protection, useful for camps/cabins
– Backed by a Canadian manufacturer now distributing through Copeland in the US

Cons:
– Requires 4-wire wiring; incompatible with 2-wire circuits common in older homes
– US retail availability is still growing and skews Northeast — check stock before assuming your local Home Depot carries it
– No gas furnace, heat pump, or central HVAC compatibility
– A handful of buyers report friction pairing with Alexa specifically

The Recommendation

Buy Mysa if you have electric baseboard, convector, or in-wall fan-forced heat with 4-wire circuits and want app control, scheduling, and HomeKit/Alexa/Google support. It’s the best-documented option in this narrow category currently sold in the US.

If your circuits are 2-wire, or you’re outside the areas where US retail stock is reliable, verify wiring and local availability before ordering — this isn’t a product every US retailer stocks consistently yet.

Frequently Asked Questions

Does Mysa work with a gas furnace or central AC?
No. Mysa is a line-voltage thermostat built only for electric baseboard, convector, and fan-forced heaters. For central HVAC, see our ecobee or Nest reviews.

Does Mysa need a C-wire or hub?
No. It connects directly to your home’s 2.4GHz Wi-Fi network with no additional hardware.

Does Mysa support Apple HomeKit?
Yes, and it’s one of the few line-voltage baseboard thermostats that does.

Is Mysa widely available in US stores?
Availability is growing, especially since Copeland began distributing Mysa in the US, but stock still concentrates in the Northeast. Check Best Buy, Home Depot, and Mysa.co directly before assuming local availability.

Can Mysa work with a 2-wire baseboard circuit?
No. It requires 4 wires (line, load, neutral, ground). If your box only has 2 wires, Mysa isn’t compatible — you’ll need to look at rewiring or a different thermostat category.

Is there a subscription fee for Mysa?
No. Scheduling, geofencing, energy reporting, and app access are all included with no ongoing fee.