Mysa Smart Thermostat V2 for Electric Baseboard Heaters (BB.2.0.01.NA-US) vs Google Nest Learning Thermostat (4th gen) with Nest Temperature Sensor (2nd gen)
These are side-by-side facts taken from each product guide: published specifications, strengths and caveats as their sources state them. This page is not a test, a ranking or a verdict about which model is better.
Mysa Smart Thermostat V2 for Electric Baseboard Heaters (BB.2.0.01.NA-US)
120V or 240V electric baseboard, fan-forced convector and radiant ceiling heat in a standard gang box
A line-voltage smart thermostat for electric resistance heat, rated 1,900 W at 120 VAC and 3,800 W at 240 VAC with a 16 A maximum and a 250 W minimum load. It measures current and voltage for real energy reports, runs on 2.4 GHz Wi-Fi with no hub, works with Alexa, Google Home and Apple Home, and carries a five-year warranty.
Published specifications
- Maker: electric baseboard, fan-forced convector and radiant ceiling heating only
- Maker: NOT compatible with low-voltage 24V, millivolt (gas fireplaces), central hydronic or electric in-floor
- Maker: 1,900 W at 120 VAC; 3,800 W at 240 VAC, 16 A max; minimum load 250 W
- Maker: standard gang box, 20 A breaker, neutral or L2; wiring setups V-L-L or V-L-N
- Maker: Wi-Fi 2.4 GHz 802.11 b/g/n plus Bluetooth LE, no hub; Alexa, Google Home and Apple Home
- Maker: temperature +/-0.5F, humidity +/-2%, light, proximity, current and voltage sensing; 5-year warranty
Strengths
- One of the few smart thermostats that actually runs 120V and 240V electric resistance heat
- Built-in current and voltage sensing gives measured energy reports, not estimates, with no subscription
- Five-year warranty and a published spec sheet whose SKU matches the listing's part number exactly
Caveats
- Useless on any 24V system: no furnace, heat pump, central boiler or millivolt fireplace support
- Load limits cut both ways: 250 W minimum and 1,900 W or 3,800 W maximum depending on voltage
- The listing says it will not work on two-wire installations while the maker's sheet lists a line-voltage 2-wire setup
Read the full Mysa Smart Thermostat V2 for Electric Baseboard Heaters (BB.2.0.01.NA-US) guide
Google Nest Learning Thermostat (4th gen) with Nest Temperature Sensor (2nd gen)
Multi-stage 24V systems run through the Google Home app, in homes with or without a C wire
Google's top thermostat, bundled with one room sensor, a trim plate and a steel plate. The maker lists up to three stages of heat and cool, three-stage heat pumps with aux and emergency heat, plus humidifier, dehumidifier and ventilation terminals. Power Sharing means no C wire in most homes, and control runs through Google Home and Matter.
Published specifications
- Maker: most 24V systems; heating and cooling 1-3 stages; heat pump to 3 stages with AUX, AUX2 and E
- Maker: star connector takes only one of W3, Y3, G3, E, HUM or DEHUM; AQ+/AQ- limited to Y3 or VENT/HUM/DEHUM
- Maker: Power Sharing works with or without a C wire; under 1% of homes may need a C wire or Nest Power Connector
- Maker: Wi-Fi 802.11n on 2.4 GHz and 5 GHz; works with Google Home and Matter; Google Home app required to set up
- Maker: 3.9 in diameter, 1.1 in deep, 5.7 oz; 2.7-inch 600x600 circular display; Soli, temperature, humidity, light sensors
- Warranty: Google Store lists 2 years retail and 5 years for HVAC pros; the listing's warranty PDF says one year
Strengths
- Maker publishes the exact stages and terminals, including three-stage heat, cool and heat pump support
- Trim plate, steel plate and a Nest Temperature Sensor are all in the box
- Works without a C wire in over 99% of homes by Google's own figure, and takes 2.4 GHz or 5 GHz Wi-Fi
Caveats
- Setup requires the Google Home app and account; Alexa or Apple control goes through Matter and may need a third-party hub
- Warranty length differs between Google's spec page and the warranty PDF on the listing, and covers authorised resellers only
- The extra terminals are shared: you cannot use W3, Y3, G3, E, HUM and DEHUM all at once
Read the full Google Nest Learning Thermostat (4th gen) with Nest Temperature Sensor (2nd gen) guide
How to choose between them
Choose the Mysa Smart Thermostat V2 for Electric Baseboard Heaters (BB.2.0.01.NA-US) if your situation matches: 120V or 240V electric baseboard, fan-forced convector and radiant ceiling heat in a standard gang box. Its main caveat: Useless on any 24V system: no furnace, heat pump, central boiler or millivolt fireplace support.
Choose the Google Nest Learning Thermostat (4th gen) with Nest Temperature Sensor (2nd gen) if your situation matches: Multi-stage 24V systems run through the Google Home app, in homes with or without a C wire. Its main caveat: Setup requires the Google Home app and account; Alexa or Apple control goes through Matter and may need a third-party hub.
Both entries repeat what each guide records. Confirm the model, included parts and availability on the current listing before ordering.
Primary sources
- Mysa for Baseboard V2 product spec sheet (maker PDF), SKU BB.2.0.01.NA-US Source for Mysa Smart Thermostat V2 for Electric Baseboard Heaters (BB.2.0.01.NA-US)
- Mysa product page for Mysa for Electric Baseboard Heaters V2 Source for Mysa Smart Thermostat V2 for Electric Baseboard Heaters (BB.2.0.01.NA-US)
- Mysa compatibility checker, named on the spec sheet and the product page Source for Mysa Smart Thermostat V2 for Electric Baseboard Heaters (BB.2.0.01.NA-US)
- Google Store tech specs and wiring compatibility, Nest Learning Thermostat (4th gen) Source for Google Nest Learning Thermostat (4th gen) with Nest Temperature Sensor (2nd gen)
- Google Consumer Hardware Limited Warranty PDF supplied with the Amazon listing Source for Google Nest Learning Thermostat (4th gen) with Nest Temperature Sensor (2nd gen)
- Google Nest compatibility checker named on the Google Store specs page and in the listing Source for Google Nest Learning Thermostat (4th gen) with Nest Temperature Sensor (2nd gen)
Primary sources checked .