First I'd like to acknowledge that these BCC100 t-stats got a lot of bad rep on Amazon. My personal experience is categorically different so much that I've upgraded both of my t-stats to BCC100 and have been super happy with my decision. I should also mention that I received no incentive from Bosch or Amazon and paid full price for both units purchased here on Amazon.
I spent many hours researching (universal) t-stats online and landed on Bosch because I generally believe the company makes great products/tools/hardware and I didn't care so much about the 'smart' Wi-Fi features which seemed to be the source of the bulk of the negative reviews on Amazon, which were predominantely Wi-Fi connectivity complaints. We had a brand new Lennox system installed at our old house with the latest color-LED t-stat that I loved (no Wi-Fi tho). I paid $450 just for the t-stat alone (installation excl). When we moved to our new house, we inherited two old t-stats that had the standard on/auto fan function and required the user to manually switch between heat and AC, etc. I thought at $150 for a Bosch BCC100 t-stat, I'd give it a try.
The reason I landed on BCC100 is a) I wanted something that's fairly universal/compatible with my HVAC system (more on that below), b) allows me to simultaneously set heating and cooling thresholds (e.g. heat up to 70F and cool down to 76F), c) allows me to run the system fan in 'CIRCULATION' mode, d) has a built-in humidistat and is able to control a humidifier accessory, e) has color LED display and is easy on the eye and f) is relatively affordable.
a) My HVAC setup. I have a newer American Standard 2-stage furnace (i.e. Trane), a newer large-capacity 2-stage York AC unit, an Aprilaire 600 whole-house humidifier, an older 2-zone ECU that operates the entire system and two t-stats (one for each zone). I installed the BCC100's myself and have had the system running without any issues for 6+ months prior to posting this review. I'm extremely satisfied with my choice to go with Bosch and here's why.
b) I'm able to set the low and high thresholds for AC and furnace at the same time and don't need flip a switch to go from heat to cooling or vice versa. The BC100 t-stat handles both call automatically. This is especially helpful in the Fall and Spring time here in the midwest when the temps drop below 50F at night and can easily reach above 80F during the day. BCC100 can kick in the furnace at night and the AC during the day with no action needed from me.
c) We've had some major hot spots in our house (e.g. master bedroom) where the temp difference could be 3-5F degrees off compared to temp on t-stat, making it very uncomfortable. We'd faced a similar issue at our old house and found that, aside from upgrading insulation and seeking the air leaks around the house, the next best thing was to get a t-stat that has a fan 'circulation' mode. The circulation setting basically allows you to cycle the HVAC independent of furnace or AC calls. That made a huge difference in our comfort. We have fan circulation set to 20 mins ON, 30 OFF round the clock. That did the trick for us - no more hot spots!
d) I'm able to set/control humidity from our BCC100 t-stat in conjunction with our whole-house humidifier accessory. You can use the H/DH and C terminals on BCC100 to trigger the humidifier. For our setup, I wanted to have BC100 turn on the humidifier whenever the fan is on vs. running the humidifier only when the furnace/heat setting is on. BCC100 interface allows you to select between 'steam' and 'evaporative' humidifier settings. I used for former to be able to run our humidifier regardless of the heating calls to the furnace. I don't have a dehumidifier installed at our house, but BCC100 also allows you to control a dehumidifier accessory. It uses the same D/HD terminal so you can only run one at a time, either a humidifier or dehumidifier. I should also mention that I used a simple relay switch to power our humidifier as I don't think that the BCC100 is able to power our Aprilaire 600 humidifier unit on its own. I used the signal from the D/HD terminal on the t-stat to energize the relay and close the power circuit from the furnace ECU to the Aprilaire unit.
A couple months after the initial install I decided to try out the Wi-Fi connection. I was half-expecting to do a hard reset and then ultimately disable the Wi-Fi feature based on the negative reviews. To my surprise, I've had zero issues with my Wi-Fi setup on both BCC100 t-stats or the Bosch iOS app on my iPhone. Don't know if my Wi-Fi settings are more conducive to a flawless Wi-Fi integration with these units or if Bosch had fixed the previous software bugs with the current software release, but I'm thrilled that I'm able to use the iOS app and change my t-stat settings on the fly from anywhere on my iPhone. I honestly didn't expect the 'smart' Wi-Fi features to work at all so this was icing on the cake for me. Since I'm an iOS user I can't say if the app works as well on Android devices. I provided a few details about my setup below if you're looking to troubleshoot or replicate a stable setup at your house.
Bosch iOS app version: 2.5.0
Bosch t-stat software version: 1.5.0 (the t-stat came preloaded with v.1.4.4 which I had upgraded to 1.5.0 once I had it connected to Wi-Fi)
Wi-Fi connection: BCC100 will only connect on a 2.4 GHz Wi-Fi network, so that's something to be aware of. If you have dual-band Wi-Fi set up at home (5GHz and 2.4 GHz running simultaneously), you'll want to make sure you're using separate SSIDs for each band (e.g. XXX_5G and XXX_2G) and connect your BCC100 to the 2.4GHz SSID. The units are stable with 'WPA2-Personal' network encryption. I also have a very strong Wi-Fi signal to both BCC100 t-stat units which alone can make or break the entire experience.
I don't know if this product is for everyone, but I personally love it. Hope this review helps you make an informed decision prior to purchasing this product. Cheers.
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From the manufacturer
Bosch Connected Control
The perfect solution to help you achieve maximum comfort with minimum effort.
Unlimited Possibilities
BCC100 app allows you to connect an unlimited number of thermostats and manage up to 4 schedules per thermostat.
Remote Control
Uses user-defined schedule to save energy and money by automatically turning itself on and off while away from home.
Feature Highlights:
- Weather Access
- Wi-Fi Capabilities
- Programmable
- Vacation Mode
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|---|---|---|---|
At-Home ComfortFull color 5-inch display touchscreen allows easy scheduling to provide the most energy efficient and comfortable temperature for your home. |
Off-site Energy SaverSaves energy and money by automatically turning itself on and off according to a pre-programmed schedule, maintaining temperature while away from home. |
Easy-to-Use InterfaceTouchscreen's navigation makes setting default preferences easy, and adjusting for new environments simple. |
Wi-Fi Ready ConnectionConnect your thermostat to Wi-Fi and control temperature from your smart phone or tablet. |
Videos
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HvacRepairGuy 2024 Bosch Brand Thermostat Reviews.mp4
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Customer Review: Screen wont load images
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This Item  Bosch Thermotechnology Bosch BCC100 Connected Control Smart Phone Wi-Fi Thermostat - Works with Alexa - Touch Screen, 5.2 x 3.08 x 1 inches |  |  |  |  |  | |
| Price | -24% $129.99 List: $169.99 | $179.99 | -27% $153.11 List: $209.99 | -8% $91.80 List: $99.99 | -10% $73.34 Typical price: $81.55 | -13% $77.99 List: $89.99 |
| Delivery | Get it as soon as Friday, May 17 | — | Get it as soon as Friday, May 17 | Get it as soon as Monday, May 20 | Get it as soon as Friday, May 17 | Get it as soon as Friday, May 17 |
| Customer Ratings | ||||||
| Easy to install | ||||||
| Tech Support | ||||||
| Alexa integration | ||||||
| Touch Screen | ||||||
| Smart Features | ||||||
| Sold By | MI Easy Tools | DealsDailyUS | Amazon.com | CyberTown | Amazon.com | Fba Sales |
| control method | voice | application | voice | application, touch | touch | application |
| connectivity protocol | Wi-Fi | Wi-Fi | Wi-Fi | Wi-Fi | Wi-Fi | Wi-Fi |
| power source | Electric | — | Common wire | Corded Electric | Corded Electric | Battery or C-wire |
| controller type | Amazon Alexa, Vera | — | Amazon Alexa, Google Assistant, SmartThings, Hand Control | Amazon Alexa, Apple HomeKit, Google Assistant, iOS, Android | Amazon Alexa, Google Assistant, IFTTT, SmartThings, Hand Control | Hand Control, Amazon Alexa, Google Assistant, SmartThings |
| specification met | energy | — | Energy Star | Energy Star | energy,energy star certified | Energy Star |
| material | Plastic | — | — | Plastic | Plastic | — |
Reviews with images
Not Energy Star Certified (no rebate). Does not regulate Humidity well on my Trane system.
It is a well engineered product with easy control screens and the remote app installed and functioned every time.Not a "plug and play" install - as wires and colors are not standard. I got the multi stage heat and cool functions to operate. I followed the Bosch support recommendations for Humidity control during the cool cycle. Cannot get this unit to regulate the humidity as precisely as the current Honeywell 8000. The Honeywell has more configuration options.
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