24V vs Line Voltage

Furnaces, central AC and heat pumps use 24V low-voltage thermostats. Electric baseboard and convector heaters run on 120 to 240V and need a line-voltage model like the Meross MTS215. Installing the wrong type can damage the thermostat or the heater.

C-Wire & Power

Wi-Fi thermostats need steady power. The Nest models work without a C-wire in most homes; Honeywell’s X-series includes a voucher for a free adapter; Aqara and Mysa require one. Check for a “C” terminal before you buy.

What Matter Exposes

Setpoint, mode and fan come through Matter on every pick. Schedules, presets and room-sensor averaging depend on the thermostat’s Matter version and your platform, so expect to use the maker’s app for setup and fine-tuning.

Presence & Room Sensors

Built-in presence sensing (Nest Learning, Aqara W200, Honeywell X7S and X8S) lowers the setpoint when rooms empty. A wireless room sensor fixes the classic hallway problem by targeting the room you actually use.

HVAC Stages & Extras

Multi-stage heat pumps with auxiliary heat, humidifiers, ventilation and dual-fuel systems need a thermostat with enough terminals. Budget models handle fewer stages, so run the maker’s compatibility checker first.

The X8S is the flagship of Resideo’s new Matter-certified Honeywell Home line. It pairs a 5-inch customizable display with occupancy and presence detection, and the box includes a wireless room sensor with up to 200 ft of range, so you can prioritize the living room by day and bedrooms at night. It can show and talk to visitors from compatible First Alert VX1 and Ring doorbells right on the thermostat, and it manages humidity and ventilation equipment for better indoor air. Compatibility is broad: up to 3 heat/2 cool heat pumps with electric backup, 2 heat/2 cool conventional systems, hot water and forced air. It connects on 2.4 or 5GHz Wi-Fi, and if you lack a C-wire, a voucher for a free Honeywell adapter is in the box. It does not work with 120 to 240V baseboard heat.

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The ElitePRO S1200 is the pick when your thermostat should also watch the air. Its sensors track humidity, VOCs and estimated CO2, useful for spotting stuffy bedrooms or cooking fumes, and it shows everything on a 5-inch touchscreen. It is also the most flexible thermostat here on equipment: the listing names heat pumps, conventional, dual-fuel, radiant, PTAC and fan-coil systems, which makes it a strong choice for condos and apartments with through-wall units. It works with Alexa, Apple Home and Google Home through Matter and supports Ring and First Alert video doorbells on screen. The listing is short on wiring detail, so confirm C-wire and staging needs with Honeywell’s compatibility tool before ordering.

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The standard Nest Thermostat was the very first thermostat to get Matter, and it is still the easiest swap for older homes. Google designed it to work without a C-wire in most homes, though heat-only, cool-only, zoned and heat pump systems may need one. It turns itself down when you leave, suggests schedule tweaks through Savings Finder, and its HVAC monitoring sends an alert when heating or cooling does not behave normally. The listing confirms it works with Google Assistant and all Matter-certified platforms, so Apple Home and SmartThings users get local control too. It does not learn like the flagship and has no room sensor support, but for a straightforward upgrade it is hard to beat.

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The X7S takes the X8S’s smarts down a step in price. You keep occupancy and presence detection (enable Auto Away to use it), so it eases off when the house empties and comes back to comfort when you return, plus a 4.3-inch customizable display and humidity monitoring. It shares the X8S’s compatibility (up to 3 heat/2 cool heat pumps or 2 heat/2 cool conventional), connects on 2.4 or 5GHz Wi-Fi and includes the free C-wire adapter voucher. You lose the bundled room sensor and doorbell view, which many homes will never miss.

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The Meross MTS300 proved a Matter thermostat does not have to cost flagship money. It integrates locally over Matter with Apple Home, Alexa, Google Home, Home Assistant and SmartThings, and Meross rates it for about 95% of HVAC systems, including heat pumps, furnaces, boilers, humidifiers and dehumidifiers. The black or white glass touch panel looks far pricier than it is, while the Meross app adds 24/7 schedules, HVAC usage tracking and alerts for filter life and system faults. Some wiring setups need a C-wire, and it is not for 120 to 240V baseboard, millivolt or two-wire systems. Meross remote sensors work too, but they need a Meross hub.

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The X2S was Honeywell Home’s first Matter thermostat, and it is deliberately simple. It mounts on Honeywell’s UWP wall plate, so if you already have a recent Honeywell, the swap can be almost wire-free. It handles up to 2 heat/2 cool conventional or 2 heat/1 cool heat pump systems, shows indoor humidity, reminds you to change filters, offers 5-1-1, 5-2 and 7-day schedules plus auto-away, and has an extended 32°F low-heat setpoint for cabins and garages. Matter brings it into Apple Home, Alexa, Google Home and SmartThings, with the First Alert app for setup. It needs a C-wire and does not work with Honeywell room sensors.

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The X7B looks like the X7S and shares its 4.3-inch display, humidity monitoring, dual-band Wi-Fi and wide compatibility, but its listing does not include the occupancy and presence detection. That makes it the right Honeywell for people who run a fixed schedule or let Matter automations and geofencing in Apple Home, Google Home or Alexa decide when the house is empty. You still get Matter certification, Energy Star savings and the free C-wire adapter voucher. Compare the X7B and X7S listings side by side before buying, since the two are easy to mix up.

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Mysa built its name on baseboard thermostats, and its new Central HVAC model brings the same clean look to 24V systems: a matte white face whose LED display glows when touched and disappears when you walk away. It is optimized for heat pumps with or without auxiliary heat, tracks humidity and temperature with alerts for frozen-pipe or mold risk, and offers geofencing, vacation mode and energy charts with no subscription, backed by 5-year hardware protection. One honest flag: the Amazon listing still says Matter is “coming soon”, but Mysa’s own help center states Matter is available on this model with firmware 4.5.31 or later. Update the thermostat before pairing. Note that Mysa’s older Baseboard, AC and In-Floor models do not support Matter. A C-wire is required.

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Electric baseboard homes have been left out of the Matter story, and the MTS215 is the cleanest fix we found on Amazon. It is a line-voltage thermostat for 120 to 240VAC baseboard, convector and fan-forced heaters, and it joins Alexa, Apple Home, Google Home and SmartThings over Matter at the same time. The Meross app adds a visual 24/7 schedule, real-time energy monitoring with history, and open window detection that pauses heat when a draft hits. Because each baseboard zone typically gets its own thermostat, Matter makes it easy to group rooms across platforms. It is not compatible with 24V HVAC, heat pumps or electric underfloor heating, and line-voltage wiring is a job for someone comfortable with mains power.

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For 220V electric heaters, the ngnsky is a low-cost wall thermostat that advertises Matter over Wi-Fi with local LAN control, so it keeps working in Apple Home or Alexa when the internet drops. It switches up to 16A, supports a fully automatic or 5+1+1 weekly program with six periods per day, and adds a child lock, auto Wi-Fi reconnection and a white LED display behind tempered glass. Treat it as a budget, buyer-beware pick: it is an unknown brand, it is rated for 220V (not 120V North American circuits), and parts of its listing (such as the temperature range) are clearly mistranslated. Check the wiring diagram and the Matter pairing code on the device before you install it.

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Want it to just work?

Get the Nest Learning Thermostat (4th gen): learning, a room sensor and no C-wire in most homes.

Apple Home household?

The Aqara W200 supports Adaptive Temperature and doubles as a Thread border router and Zigbee hub.

Hot and cold rooms?

The Honeywell X8S ships with a 200 ft room sensor; the Nest Learning includes one too.

Tight budget?

The Meross MTS300 or Honeywell X2S give you native Matter for the least money.

No C-wire at the wall?

Start with the Google Nest Thermostat, or a Honeywell X-series model with its free adapter.

Electric baseboard heaters?

Use the Meross MTS215 for 120 to 240V, or the ngnsky for 220V. Never a 24V thermostat.

Do I need a hub for a Matter thermostat?

You need a Matter controller such as an Apple TV or HomePod, a Google Nest hub or speaker, a recent Echo, a SmartThings hub or Home Assistant. Every pick here uses Matter over Wi-Fi, so you do not need a Thread border router or a brand-specific bridge. The Aqara W200 can even act as the hub for your other Thread and Zigbee devices.

Why are ecobee, Sensi and the Amazon Smart Thermostat not on this list?

When we checked their Amazon listings, none of them claimed native Matter support. They still work with Alexa, Google or Apple Home through their own integrations, but they are not Matter devices, so they cannot be shared across platforms the same way. If that changes with a firmware update, we will revisit them.

Can I set schedules in Apple Home or Google Home through Matter?

Partly. Matter 1.4 added presets and schedules for thermostats, but support depends on both the thermostat’s firmware and your platform, and many apps still only show setpoint, mode and fan. In practice, build the weekly schedule in the maker’s app and use Matter for voice control, cross-brand automations and features like Apple’s Adaptive Temperature on supported models.

Do I need a C-wire for a Matter thermostat?

Usually, because Wi-Fi radios need constant power. Both Nest models are designed to work without one in most homes; the Honeywell X7S, X7B and X8S include a voucher for a free C-wire adapter; the Aqara W200 and Mysa need a C-wire or an adapter; the Meross MTS300 needs one in some wiring setups. Line-voltage models like the MTS215 do not use a C-wire at all.

Can a Matter thermostat use sensors from other brands?

Through automations, yes: a Matter door sensor can switch the thermostat off when a window opens, or a Matter temperature sensor can raise the setpoint when the nursery gets cold. Native remote-sensor averaging still uses each brand’s own sensors (Nest, Honeywell, Aqara or Meross), because Matter does not yet standardize feeding a third-party reading into the thermostat’s control loop.