merossSmart Thermostat for Electric Baseboard and in-Wall Heaters Work with HomeKit, Alexa and Google Home, 120V-240V Wi-Fi Programmable Thermostat with Easy Install, Energy Saving, 4 Wires Needed

My 30 year old house has electric baseboard heat, with a thermostat in each room, and some of the (original) honeywell thermostats have started going bad, either running the heat constantly or not at all, so I started looking for good replacements that also had smart home features - i.e. at a minimum an app that lets me control remotely from my android phone.After a bit of research, I narrowed my choices down to this Meross model and the Mysa Lite. Mysa seems to be a better known brand, but the Meross seemed very similar and the price point was a bit better. I also found a YouTube installation video by Meross that was well done and informative, so I decided on Meross and bought two thermostats.So far, this seems like a very good choice. The product was well packaged with a very brief (but well written) instruction booklet - but, as I said, more is available online if you need it. Since wiring has changed over the years, I had a bit of a hard time translating the conventions of the old thermostat to the new one, and it took a bit of trial and error to get the wiring right, but once I did everything else was smooth sailing. The thermostat lit up and the pairing and set up process was done intuitively through the smartphone app. The set up process was similar to other smart home apps that I've used from google, ring, kasa, etc.The thermostat looks VERY NICE on the wall. Certainly much better than the one it replaced. The display is bright but not overly so, and although the controls are minimal, you can set the temperature and cycle through hold/eco/pre-programmed settings. Many more settings are available on the app.I was also able with minimal effort to integrate the thermostat with google home, which is a plus since I have several other devices I control from there.The first two thermostats have been deployed for a couple of months now, and no complains, they do what I need reliably and intuitively. At some point down the road I'll be buying more to replace the rest of the aging thermostats.

The media could not be loaded. Love these I control it with the app, you can schedule, control from the phone app if you are not home, easy to installed, these are only for electric heaters, i have based board electric, each heater needs a separate one, you can’t use it in multiple heaters, am installing these on my home since my furnace broke, am changing my heat for electric and installing one of these per room, i love it because its smart, is accurate, value for the money, love how it functions with the app and love that they are touch screen as well! These don’t require batteries they are connected directly with the electricity of your electric heater!

UPDATE #2: Back to 4 stars from 5 stars. I make this change after four straight months of use. The system overall is still working great with one small but glaring issue with the app. For some reason, at least once a month on at least one of the three smart thermostats I installed, the daily energy use is not recorded at all which in turns throws off the entire energy calculation for the week/month. There is pattern as to which thermostat or which day this occurs but it's annoying as heck! Fix this and I'll bump it back up to 5 stars.UPDATE: This is an update to the original review below. I have changed this to 5 stars from 4 since the 1-star ding I gave them in the original review below was for a lack of a decent manual that explains the features in detail. While this is still missing, the system itself is so powerful and relatively intuitive that I can't in good conscious take away a whole star. If I could I'd give it 4.5 stars. Anyway, I received two more of these yesterday and as expected, installation was a snap. Where the first unit took me a couple hours of mostly making sure I understood the proper wiring, I was able to install AND program the second AND third units in a half hour!One other thing I have learned with regard to programming is a feature called 'Hold action'. This works with the 'Schedule' feature which allows you to set a linear temperature timeline where your desired temps are activated at preset times. In the 'Hold action' menu you can select from six options - four timed (1, 2, 4 & 8 hours), plus 'Until you change it' and 'Until the next scheduled activity'. What this option does is it allows you to change from Auto (Schedule) mode to manual but then if/when the mode changes back to Auto mode is based upon the 'Hold action' selection. In my case I selected 'Until the next scheduled activity' and that way I can change to manual mode but then it will automatically change back when the next temp/time change occurs in the 'Schedule'.ORIGINAL REVIEW: We heat with a combination of different heating types including 240v electric baseboard heaters (USA). For a long time I wished there was a smart thermostat for these types of systems that was affordable and effective. The Meross Smart Thermostat is just that. It absolutely works wonderfully with this type of system. Installation was relatively easy and fast. The first took me a few hours mostly making sure everything was right because there were a lot more wires with the old manual, dual pole thermostat which has four wires. The Meross only has three. But once I realized that the three wire system would work exactly as the little 'manual' wiring diagram shows, everything went smoothly. I just ordered two more and those will install in a matter of minutes now that I know what I'm doing.The programming ability of this system is really powerful. You can run the thermostat manually with either the app or at the thermostat control panel itself. The control panel is fairly self-explanatory once you familiarize yourself with the various icons as described in the 'manual'. The app is very intuitive for the most part. You can control the thermostat automatically a few ways. There are two 'modes' in the app - Manual and Auto. You can set 'Scenes' by building a temp profile where you dial in a desired temperature and then give it a name and save it. You can then manually run these Scenes via your phone app. You can then build 'Routines' where you basically automatically run the 'Scenes'. So, for instance on my system I have created three Scenes. Morning warm up where the thermostat is set to 72F, Daily running where the thermostat is set to 68F and then Sleep when the thermostat is set to OFF. Then I created Routines to launch each of those Scenes at the times I want them to run. You can also select any single, combo or all days to run. Although technically this is manual mode, running the Scenes with Routines effectively turns this into a hands-free, automatically running system.Then there is the Auto mode which uses a linear 'Schedule' where you build a timeline manually with temperature variations at the desired times. Once you have done this you can select at each thermostat whether to run in either Manual (Routines/Scenes) or Auto (Schedule). They both basically do the same thing just differently. The key here is that if you make ANY manual changes to the thermostat whether via the app or the control panel, the mode gets changed/set to Manual mode. So if you want to run on the Schedule mode then you have to reactivate that. As a failsafe I just programmed the Auto Schedule mode to be the exact same as the Manual Routine/Scene mode so no matter which I'm in the results will be the same. The Manual/Auto mode differences are not explained anywhere at all in the 'manual'. I put 'manual' in the single quotes as it is a very small booklet with only the most basic of installation and operating instructions. Even on the website there is no better manual. However, there was a decent FAQ page where I was able to discern how the above differences work from submitted questions and answers there.I'm giving 4 stars due to this lack of better explanation of features. I'm a read-the-whole-manual-twice kind of guy that loves to tinker and get the most out of cool, high-tech programmable stuff and the Meross 'manual' leaves much to be desired here. While I understand there is only room for a tiny installation and operation 'manual' to accompany the physical unit, there absolute should be a more detailed manual available and easy-to-find online. In truth I'd give them 4.5 stars since the system is so awesome compared to the manual thermostats I had but since my options are 4 or 5 I went with 4. I just ordered two more and I'll install them when they arrive in a few days and report back then if I have any updates. But for $79.99 (after 20% savings from $99.99), the feature set and powerful programming, not to mention the ability to monitor and manipulate your home's temperature from far away via the app makes this a great system. The ONLY other 240v line voltage electric baseboard smart thermostat system I could find is almost double the price at $155 and I definitely like the look and options of the Meross system much better, especially at half the price!

I like the quality and design, but something is off with the app and functionality. It comes with 3 presets ( comfort, eco and away) and for the life of me, I cannot change the settings on those or turn them off. Then, out of the blue, it turns itself on while it's supposed to be on a schedule, so the heat turns on in my bedroom during the day, when no one is home. Waste of electricity! The app is a bit annoying too, not intuitive and not much thought was put into the design. Not very happy camper!April 9 2025So, after getting to understand how this thermostat actually works, i have to say that is better than I initially thought! Just take your time to understand to to program the device using the app- it s quite intuitive if you pay attention. Once you do, it works flawlessly! I am very happy with it now and ordered another one for my bathroom baseboard. Will do a 6 month or 1 year follow up review but so far I am a happy camper👍😉