The short version: Stelpro sells two separate Wi-Fi smart thermostat lines for electric resistance heat under one general branding — Concerto for electric in-floor heating, and Maestro for baseboard, convector, and fan heaters. Both connect directly to Wi-Fi without a hub and use an app for scheduling, geofencing, and energy tracking. Retailer star ratings for Maestro are mixed, so verify current reviews before buying rather than assuming consistency across every retailer.

Who It’s For

Both Stelpro lines are line-voltage electric resistance thermostats, not central-HVAC thermostats. They don’t control a furnace, heat pump, or central air system.

  • Concerto is for electric in-floor (radiant) heating — mats or cables under tile, hardwood, or laminate.
  • Maestro is for electric baseboard heaters, convectors, and fan heaters.

If you have electric resistance heat of either type in a Northeast US home (Stelpro, like Mysa, has a growing but still limited US retail footprint), this is a category worth comparing against Mysa before buying.

Design & Build

Both lines use a similar rectangular thermostat housing with a backlit LCD display and physical buttons for setpoint adjustment without the app. Concerto units add a floor-sensor input and, in some models, energy-monitoring readouts on the display itself.

Setup & Compatibility

Concerto (floor heating): Works with 120V, 208V, and 240V electric floor-heating systems. Comes with a 15-foot floor sensor. Offers floor-temperature control, ambient (room) control, or ambient control with a floor-temperature limit. Includes a built-in Class A GFCI with test light, appropriate for bathroom installs. Setup uses a five-step startup wizard in the app. It’s also compatible with floor sensors from other brands if you’re replacing an existing thermostat without swapping the sensor.

Maestro (baseboard/convector/fan heaters): Designed to add smart connectivity to Maestro-compatible line-voltage electric baseboards, convectors, and fan heaters. Supports room-by-room zone grouping and geofencing.

No hub required for either line — both connect directly to home Wi-Fi.

Installation: Both are line-voltage electrical work. Turn off the breaker, verify power is off with a voltage tester, and follow the app’s wiring walkthrough. Hire a licensed electrician if you’re not confident with line-voltage wiring.

App & Ecosystem

Scheduling is pre-configured out of the box (Concerto ships with four weekday and two weekend events you can customize), with geofencing on Maestro to adjust temperature automatically as you leave and return, plus energy-consumption tracking on both lines.

Smart home support: Alexa and Google Assistant, connected through IFTTT rather than native integration on Maestro. Apple HomeKit is not supported on either line — if HomeKit matters to you, Mysa is the option to look at instead.

Buyer Feedback: What We Found

Feedback is genuinely mixed, and we’re reporting it straight rather than smoothing it over. Maestro’s retailer ratings vary sharply by platform: a strong 5-out-of-5 on Wayfair versus a notably weaker 2.9-out-of-5 across nine reviewers on RONA (a Canadian retailer, but relevant since it’s one of the few places with a meaningful review count for this product). Some buyers report reliability issues; others describe it working as expected. We did not find a comparable volume of independent reviews specifically for Concerto. Given the spread in Maestro’s ratings, read current reviews on whichever retailer you’re buying from before ordering rather than relying on positive marketing copy alone.

Price & Value

Stelpro Concerto / Maestro
Price (USD) ~$150–220
Warranty 3 years
Subscription None
Hub required No

Priced comparably to Mysa in this category. The deciding factor for most US buyers will be availability (Mysa’s US Northeast retail footprint has grown through its Copeland partnership) and reviewed reliability rather than price.

Pros & Cons

Pros:
– Two dedicated product lines matched to floor heating (Concerto) vs. baseboard/convector/fan heat (Maestro), rather than one generic thermostat
– No hub required, direct Wi-Fi connection
– Built-in Class A GFCI on Concerto, appropriate for bathroom floor-heating installs
– 3-year warranty
– Energy consumption tracking on both lines

Cons:
– Retailer ratings for Maestro are inconsistent across platforms — some buyers report reliability problems
– No native Apple HomeKit support on either line
– Alexa/Google Assistant integration runs through IFTTT rather than a direct connection
– US retail availability is still limited compared to Mysa

The Recommendation

Consider Stelpro Concerto for electric floor heating if you want the built-in GFCI and floor-sensor features at a comparable price to Mysa’s in-floor model, and consider Maestro for baseboard/convector/fan heat — but read current retailer reviews first given the mixed ratings we found. If HomeKit support or the most consistently positive independent review record matters more to you than brand variety, Mysa is the safer default in this category for US buyers right now.

Frequently Asked Questions

What’s the difference between Stelpro Concerto and Maestro?
Concerto is built for electric in-floor heating with a floor sensor and floor-temperature control. Maestro is built for electric baseboard, convector, and fan heaters. They’re separate product lines under the same brand.

Do these thermostats need a hub?
No. Both connect directly to your home Wi-Fi.

Do Stelpro thermostats support Apple HomeKit?
No. Neither Concerto nor Maestro supports HomeKit. Mysa is the option to consider if HomeKit is a requirement.

Are Stelpro thermostats reliable?
Reviews are mixed. Retailer ratings for Maestro range from very positive to notably weak depending on the platform. Check current reviews on the specific retailer you’re buying from before ordering.

Does Maestro work with Alexa or Google Assistant?
Yes, but through IFTTT rather than a native, direct integration.

Is Stelpro widely available in the US?
Availability is still more limited than Mysa’s. Confirm current stock with your retailer before assuming it’s carried locally.