The short version: Read the model number carefully before buying. The MTS100 and MTS150 are Meross’s smart thermostatic radiator valve (TRV) line — a battery-powered smart valve that screws onto an existing radiator, not a wall thermostat for a furnace or ducted forced-air system. If you have hydronic radiator heat (common in older Canadian homes, walk-up apartments, and some condo buildings, especially in Quebec and older Ontario housing stock), it’s a genuinely useful, affordable smart-heating upgrade. If you have a standard forced-air furnace, this isn’t the right product.

Who It’s For

The MTS100/MTS150 fits:
– Homes with hydronic radiators using the common M30 x 1.5mm valve thread (check your existing radiator valve before buying)
– Renters or condo owners who can’t rewire a furnace but want per-room smart heating control on individual radiators
– Budget buyers who want basic smart scheduling on radiator heat without a full system replacement

It does not fit forced-air/ducted homes and it doesn’t apply to electric baseboard heating either — see Best Smart Thermostats for Electric Baseboard Heating in Canada for Mysa, Sinopé, or Stelpro if that’s your setup. If you have a forced-air furnace, see our reviews of Sensi, ecobee, or Honeywell wall thermostats instead.

The MTS150 adds Apple HomeKit support over the base MTS100, which supports Alexa, Google Assistant, and SmartThings only.

Design & Build

The valve has a minimalist cylindrical shape, visually similar in concept to Tado’s radiator valve, with three touch-sensitive buttons for on-device control. One noted design quirk from independent reviews: the display only lights up after a button press, and the touch-sensitive controls can be a little fussy to hit accurately. It runs on 2 AA batteries (not included in some listings — check before buying).

Setup & Compatibility

A Meross hub is required for the MTS100 to connect to Wi-Fi and be controlled remotely or by voice assistant — factor the hub cost into your total budget if you don’t already own one. One hub supports multiple valves, so the cost amortizes if you’re outfitting several radiators in an older home.

Installation is a physical swap: unscrew your existing radiator valve head, screw on the Meross valve, no electrical wiring involved. The valve ships with several adapter fittings for different thread sizes, though M30 x 1.5mm is most common. Confirm your radiator’s thread size before ordering.

A useful feature: open-window detection, which pauses heating automatically if it senses a rapid temperature drop consistent with an open window — a practical touch for anyone airing out a room in winter.

App & Ecosystem

The Meross app handles scheduling and remote control. Independent European reviewers describe setup as reasonably smooth, with some noted app translation and polish issues.

Ecosystem support:
– MTS100: Amazon Alexa, Google Assistant, SmartThings (via hub)
– MTS150: Adds Apple HomeKit support

Price & Value

Item Price (CAD)
Meross MTS100/MTS150 (per valve) ~$80-130
Meross hub (if not already owned) Sold separately, factor into total cost

Pricing is genuinely low for smart heating control, especially per-radiator if outfitting a home with several units off one shared hub. Available through Amazon.ca.

Sourcing note: Independent English-language, Canadian-market review coverage of this specific model line is thin — most detailed testing we found comes from German-language smart home outlets and buyer feedback on retail listings rather than major North American publications. Treat pros/cons here as directionally reliable but not as deeply verified as our reviews of higher-profile brands.

Pros & Cons

Pros:
– Genuinely useful for hydronic radiator heat, an underserved category among mainstream smart thermostat brands
– Low per-unit price, especially when scaling across multiple radiators on one hub
– No electrical wiring required — physical valve swap only
– Open-window detection is a practical touch
– MTS150 adds HomeKit support

Cons:
– Does not work with forced-air/ducted systems or electric baseboard heat — read the model description carefully before buying
– Requires a separate hub purchase for full smart functionality
– Touch-sensitive buttons and non-illuminated display draw some criticism
– Limited independent Canadian-market review coverage compared to major thermostat brands
– Batteries not always included

Meross MTS100 vs MTS150 vs other smart radiator valves: features, price, and hub requirements compared

The Recommendation

Buy the Meross MTS100/MTS150 only if you have hydronic radiator heat with a compatible valve thread — it’s a legitimately affordable way to add smart scheduling to radiator-based heating. Do not buy this if you have a standard forced-air furnace or electric baseboard heat; it will not work on either. This product isn’t ENERGY STAR-listed in the same way wall thermostats are, so don’t expect Canadian utility rebate eligibility here — check Smart Thermostat Rebates in Canada by Province for what actually qualifies.

Frequently Asked Questions

Does the Meross MTS100/MTS150 work with a forced-air furnace?
No. This is a smart radiator valve for hydronic (water/steam radiator) heating, not a wall thermostat for a ducted forced-air furnace.

Does it work with electric baseboard heating?
No. For electric baseboard, see Mysa, Sinopé, or Stelpro instead.

Do I need a hub for the Meross MTS100?
Yes, for full Wi-Fi and voice assistant functionality. Without a hub, the valve can generally still be controlled locally but loses remote/app access.

What’s the difference between MTS100 and MTS150?
The MTS150 adds Apple HomeKit support. The MTS100 covers Alexa, Google Assistant, and SmartThings but not HomeKit.

Will the Meross valve fit my radiator?
It’s built around the common M30 x 1.5mm thread with included adapters for some other sizes. Check your existing radiator valve’s thread before ordering.

Where can I buy the Meross MTS100/MTS150 in Canada?
Amazon.ca carries it, typically in the $80-130 CAD range depending on kit size and current promotions.