Smart Thermostats / Honeywell Home X2S (RTH2CWF) vs Mysa Smart Thermostat for Electric Baseboard Heaters V2 (MYSA-V2-0 / BB2001NAUS)
Honeywell Home X2S (RTH2CWF)
$79.99
VSMysa Smart Thermostat for Electric Baseboard Heaters V2 (MYSA-V2-0 / BB2001NAUS)
$159.00
Honeywell Home X2S (RTH2CWF) vs Mysa Smart Thermostat for Electric Baseboard Heaters V2 (MYSA-V2-0 / BB2001NAUS)
Mysa Smart Thermostat for Electric Baseboard Heaters V2 (MYSA-V2-0 / BB2001NAUS)
The default smart thermostat for electric baseboard heat — and it will not run a furnace.
Wins overall by 0.8 points
Quick Verdict
The Mysa Smart Thermostat for Electric Baseboard Heaters V2 (MYSA-V2-0 / BB2001NAUS) is the stronger all-round pick, ahead by 0.8 points. The default smart thermostat for electric baseboard heat — and it will not run a furnace.
The Honeywell Home X2S (RTH2CWF) and Mysa Smart Thermostat for Electric Baseboard Heaters V2 (MYSA-V2-0 / BB2001NAUS) are both closely matched smart Thermostat models, and the Honeywell Home X2S (RTH2CWF) is $79 cheaper than the Mysa Smart Thermostat for Electric Baseboard Heaters V2 (MYSA-V2-0 / BB2001NAUS) ($79.99 vs $159). On C-Wire Freedom, the Mysa Smart Thermostat for Electric Baseboard Heaters V2 (MYSA-V2-0 / BB2001NAUS) leads (7.5 vs 1.0/10) — how likely this thermostat is to run on the wiring you already have — whether it needs a common wire, and whether the workaround is in the box, sold separately, or an electrician's visit. The single biggest cause of returns in this category.. On HVAC Coverage, the Honeywell Home X2S (RTH2CWF) leads (6.0 vs 3.0/10) — stages of heating and cooling, heat pump and auxiliary heat handling, and humidifier / dehumidifier / ventilator terminals. On Multi-Room Sensing, the Mysa Smart Thermostat for Electric Baseboard Heaters V2 (MYSA-V2-0 / BB2001NAUS) leads (3.5 vs 1.0/10) — remote sensors: included or extra, how many pair, and whether they read occupancy or only temperature. Overall, the Mysa Smart Thermostat for Electric Baseboard Heaters V2 (MYSA-V2-0 / BB2001NAUS) scores 5.9/10 across our 8 scoring categories versus 5.1/10 for the Honeywell Home X2S (RTH2CWF). Below, we break down the full spec sheet, category-by-category scores, and exactly who should buy which one.
Side-by-Side Comparison
| Spec | Honeywell Home X2S (RTH2CWF) | Mysa Smart Thermostat for Electric Baseboard Heaters V2 (MYSA-V2-0 / BB2001NAUS) |
|---|---|---|
| Price | $79.99 | $159.00 |
| Release Year | 2025 | 2021 |
| System Voltage | Low voltage 24V. Resideo states it does not work with electric baseboard heat at 120-240V | Line voltage 120V or 240V AC, 16A maximum — 3,800W at 240V or 1,900W at 120V, on a 20A breaker. This is the opposite of every 24V thermostat here; a low-voltage model will not run baseboard heat and this will not run a furnace |
| C-Wire Required | Yes, hard requirement. Resideo states a constant 24V C-wire supply is needed and the X2S is not battery powered | Not applicable — line-voltage thermostats have no C wire. It does need both line conductors (L1 and L2/neutral) present in the box, so a two-wire switch loop will not work |
| Adapter / Power Kit Included | No adapter of any kind is included | Not applicable |
| Heating & Cooling Stages | Up to 2 Heat/2 Cool conventional | Heating only, on/off line-voltage switching. No cooling and no staging |
| Heat Pump & Aux Heat | Yes — up to 2 Heat/1 Cool heat pump with electric backup | No. Mysa states it does not work with 24V furnaces or central air, millivolt systems, central hydronic boilers, or electric in-floor heating, which needs a different Mysa product |
| Humidifier / Ventilator Terminals | None published. Humidity is monitored and displayed, not controlled | None |
| Remote Sensors | None. There is no room sensor option for this model | None. Mysa's model is one thermostat per heater circuit, so each room is its own zone rather than a sensor network |
| Occupancy Detection | None. Away behaviour comes from geofencing in the First Alert app | Light and proximity sensors wake and dim the display on the V2. Away control is app geofencing. There is no room occupancy sensing |
| Matter Support | Matter certified — but Matter Alpha's reviewer could see temperature, humidity and mode in SmartThings and could not get setpoint changes to take effect, which breaks the automations Matter is meant to enable | Not listed for the baseboard models. Mysa's own Matter article covers the central-HVAC Smart Thermostat and says Matter is 'expected in early 2026 via firmware update' |
| Voice & Smart Home Platforms | First Alert app by Resideo (required for setup and to generate the Matter code), Amazon Alexa, Google Assistant, Apple Home via Matter | Mysa app, Apple HomeKit, Amazon Alexa, Google Home |
| Utility Rebates & Demand Response | ENERGY STAR certified. Resideo's launch materials specifically call out enabling enrolment in utility energy-management programs | Mysa states both baseboard models support utility demand-response programs, and the V2 is stocked across US utility rebate marketplaces |
| Account or Subscription Needed | No subscription. A First Alert account is required | No subscription — Mysa markets the app as 100% free |
| Warranty | 24 months | 60 months |
| Colors | Gray, White | White |
Category Scores
C-Wire Freedom
The Mysa Smart Thermostat for Electric Baseboard Heaters V2 (MYSA-V2-0 / BB2001NAUS) leads clearly here, 7.5 against 1.0 — a 6.5-point margin on how likely this thermostat is to run on the wiring you already have — whether it needs a common wire, and whether the workaround is in the box, sold separately, or an electrician's visit. The single biggest cause of returns in this category.. If that is what you are buying for, the Honeywell Home X2S (RTH2CWF) does not close the gap elsewhere.
HVAC Coverage
The Honeywell Home X2S (RTH2CWF) leads clearly here, 6.0 against 3.0 — a 3.0-point margin on stages of heating and cooling, heat pump and auxiliary heat handling, and humidifier / dehumidifier / ventilator terminals. If that is what you are buying for, the Mysa Smart Thermostat for Electric Baseboard Heaters V2 (MYSA-V2-0 / BB2001NAUS) does not close the gap elsewhere.
Multi-Room Sensing
The Mysa Smart Thermostat for Electric Baseboard Heaters V2 (MYSA-V2-0 / BB2001NAUS) leads clearly here, 3.5 against 1.0 — a 2.5-point margin on remote sensors: included or extra, how many pair, and whether they read occupancy or only temperature. If that is what you are buying for, the Honeywell Home X2S (RTH2CWF) does not close the gap elsewhere.
Smart Home Integration
The Honeywell Home X2S (RTH2CWF) and Mysa Smart Thermostat for Electric Baseboard Heaters V2 (MYSA-V2-0 / BB2001NAUS) are level here, at 6.5/10 each. matter, Apple Home, Alexa and Google support — and how much each one actually exposes is not what separates these two — look to the categories where the scores diverge.
Scheduling & Learning
The Mysa Smart Thermostat for Electric Baseboard Heaters V2 (MYSA-V2-0 / BB2001NAUS) leads clearly here, 7.0 against 5.5 — a 1.5-point margin on learning, geofencing, away detection and how much of it works without babysitting the app. If that is what you are buying for, the Honeywell Home X2S (RTH2CWF) does not close the gap elsewhere.
Display & On-Device Control
The Mysa Smart Thermostat for Electric Baseboard Heaters V2 (MYSA-V2-0 / BB2001NAUS) leads clearly here, 7.5 against 5.0 — a 2.5-point margin on screen quality and how much you can do at the wall instead of in the phone app. If that is what you are buying for, the Honeywell Home X2S (RTH2CWF) does not close the gap elsewhere.
Installation
The Honeywell Home X2S (RTH2CWF) leads clearly here, 7.0 against 5.5 — a 1.5-point margin on wiring complexity, guided setup, and how likely a DIY install is to end in a service call. If that is what you are buying for, the Mysa Smart Thermostat for Electric Baseboard Heaters V2 (MYSA-V2-0 / BB2001NAUS) does not close the gap elsewhere.
Value
The Honeywell Home X2S (RTH2CWF) leads clearly here, 8.5 against 7.0 — a 1.5-point margin on what the money buys once accessories, adapters and sensors are added in. If that is what you are buying for, the Mysa Smart Thermostat for Electric Baseboard Heaters V2 (MYSA-V2-0 / BB2001NAUS) does not close the gap elsewhere.
Best For
Choose the Honeywell Home X2S (RTH2CWF) if…
- • HVAC Coverage matters most to you — the Honeywell Home X2S (RTH2CWF) scores 6.0/10 here (stages of heating and cooling, heat pump and auxiliary heat handling, and humidifier / dehumidifier / ventilator terminals).
- • You want to spend less — it's $79 cheaper.
- • Your main use case is budget or matter.
Choose the Mysa Smart Thermostat for Electric Baseboard Heaters V2 (MYSA-V2-0 / BB2001NAUS) if…
- • C-Wire Freedom matters most to you — the Mysa Smart Thermostat for Electric Baseboard Heaters V2 (MYSA-V2-0 / BB2001NAUS) scores 7.5/10 here (how likely this thermostat is to run on the wiring you already have — whether it needs a common wire, and whether the workaround is in the box, sold separately, or an electrician's visit. The single biggest cause of returns in this category.).
- • Multi-Room Sensing matters most to you — the Mysa Smart Thermostat for Electric Baseboard Heaters V2 (MYSA-V2-0 / BB2001NAUS) scores 3.5/10 here (remote sensors: included or extra, how many pair, and whether they read occupancy or only temperature).
- • Display & On-Device Control matters most to you — the Mysa Smart Thermostat for Electric Baseboard Heaters V2 (MYSA-V2-0 / BB2001NAUS) scores 7.5/10 here (screen quality and how much you can do at the wall instead of in the phone app).
- • Scheduling & Learning matters most to you — the Mysa Smart Thermostat for Electric Baseboard Heaters V2 (MYSA-V2-0 / BB2001NAUS) scores 7.0/10 here (learning, geofencing, away detection and how much of it works without babysitting the app).
- • Your main use case is line-voltage or multi-room.
Pros & Cons
Honeywell Home X2S (RTH2CWF)
Pros
- +Matter certified, ENERGY STAR certified and dual-band Wi-Fi for $79.99 — nothing else here does all three that cheaply
- +2H/2C conventional staging is more than the similarly priced Sensi Lite or the Nest Thermostat publish
- +Mounts on Resideo's UWP plate, the same system professional installers use, which makes wiring tidy
- +2-year warranty at $80, double what Amazon and Google give at this price
Cons
- −A C wire is mandatory and no adapter is included — in a four-wire house this $80 thermostat becomes an electrician's callout
- −Matter works only for reading state in at least one reviewer's testing: setpoint changes sent over Matter did not stick
- −You have to install the First Alert app to get a Matter pairing code, so Matter does not free you from the vendor app
- −No room sensors and no occupancy sensing at all — this is strictly a one-room thermostat
- −No humidifier, dehumidifier or ventilator control
Mysa Smart Thermostat for Electric Baseboard Heaters V2 (MYSA-V2-0 / BB2001NAUS)
Pros
- +One of the very few smart thermostats that actually controls 120/240V electric baseboard heat, which no Nest, ecobee, Sensi or Honeywell model here can touch
- +Real energy monitoring in watts per heater, so you can see which room is eating the bill
- +Apple HomeKit, Alexa and Google support with no hub, on a 5-year warranty
- +One thermostat per heater means genuine per-room zoning without buying a sensor ecosystem
Cons
- −16A / 3,800W ceiling at 240V, and it needs both L1 and L2 in the box — a two-wire switch loop or an oversized heater bank is a hard no
- −Heating only, on/off. No cooling, no staging, no humidifier, no ventilator
- −No Matter. Mysa's Matter rollout is documented for the central-HVAC thermostat, not the baseboard line
- −Warranty sources conflict: Mysa's own page claims 5 years while SupplyHouse's listing for MYSA-V2-0 says 2
- −You need one per heater circuit, so a four-room apartment is four thermostats and four installs
Shop by Need
FAQs
Is the Honeywell Home X2S (RTH2CWF) or Mysa Smart Thermostat for Electric Baseboard Heaters V2 (MYSA-V2-0 / BB2001NAUS) better overall?+
Based on our 8-category scoring, the Mysa Smart Thermostat for Electric Baseboard Heaters V2 (MYSA-V2-0 / BB2001NAUS) comes out ahead overall. See the full breakdown in the scores section above — the right pick still depends on which categories matter most for your use case.
Which is better for C-Wire Freedom, the Honeywell Home X2S (RTH2CWF) or the Mysa Smart Thermostat for Electric Baseboard Heaters V2 (MYSA-V2-0 / BB2001NAUS)?+
The Mysa Smart Thermostat for Electric Baseboard Heaters V2 (MYSA-V2-0 / BB2001NAUS) scores higher on C-Wire Freedom (7.5/10 vs 1.0/10) — how likely this thermostat is to run on the wiring you already have — whether it needs a common wire, and whether the workaround is in the box, sold separately, or an electrician's visit. The single biggest cause of returns in this category..
Which is better for HVAC Coverage, the Honeywell Home X2S (RTH2CWF) or the Mysa Smart Thermostat for Electric Baseboard Heaters V2 (MYSA-V2-0 / BB2001NAUS)?+
The Honeywell Home X2S (RTH2CWF) scores higher on HVAC Coverage (6.0/10 vs 3.0/10) — stages of heating and cooling, heat pump and auxiliary heat handling, and humidifier / dehumidifier / ventilator terminals.
Which is better for Multi-Room Sensing, the Honeywell Home X2S (RTH2CWF) or the Mysa Smart Thermostat for Electric Baseboard Heaters V2 (MYSA-V2-0 / BB2001NAUS)?+
The Mysa Smart Thermostat for Electric Baseboard Heaters V2 (MYSA-V2-0 / BB2001NAUS) scores higher on Multi-Room Sensing (3.5/10 vs 1.0/10) — remote sensors: included or extra, how many pair, and whether they read occupancy or only temperature.
Which is better for Display & On-Device Control, the Honeywell Home X2S (RTH2CWF) or the Mysa Smart Thermostat for Electric Baseboard Heaters V2 (MYSA-V2-0 / BB2001NAUS)?+
The Mysa Smart Thermostat for Electric Baseboard Heaters V2 (MYSA-V2-0 / BB2001NAUS) scores higher on Display & On-Device Control (7.5/10 vs 5.0/10) — screen quality and how much you can do at the wall instead of in the phone app.
Is the Honeywell Home X2S (RTH2CWF) worth the price difference over the Mysa Smart Thermostat for Electric Baseboard Heaters V2 (MYSA-V2-0 / BB2001NAUS)?+
The Honeywell Home X2S (RTH2CWF) is the cheaper option at $79.99 versus $159. Whether the pricier model is "worth it" depends on how much you value its lead in C-Wire Freedom.
Which is better suited to my use case?+
The Honeywell Home X2S (RTH2CWF) is the better fit if you mainly care about budget or matter. The Mysa Smart Thermostat for Electric Baseboard Heaters V2 (MYSA-V2-0 / BB2001NAUS) is the better fit for line-voltage or multi-room.
What's the warranty on the Honeywell Home X2S (RTH2CWF) vs the Mysa Smart Thermostat for Electric Baseboard Heaters V2 (MYSA-V2-0 / BB2001NAUS)?+
The Honeywell Home X2S (RTH2CWF) ships with a 24-month warranty; the Mysa Smart Thermostat for Electric Baseboard Heaters V2 (MYSA-V2-0 / BB2001NAUS) ships with a 60-month warranty. Always confirm current terms on the manufacturer's site before buying.
Should I wait for the next model instead of buying either of these?+
If either model is more than two years old, a successor may be close — check the "Latest Model" link on each product page. Otherwise, both are current, well-supported options and there's no strong reason to wait.
Cheaper Option
Sensi Lite (ST25) — $79.00
Specifications and prices for both products last verified . Scores are calculated from published specifications — see how we compare products.