Venstar T7850 Colortouch 7 Day Programmable Thermostat with Built in Wifi (Replaces T5900 and Acc0454)
Original price was: €234.€219Current price is: €219.
Price: $234.29 - $219.00
(as of Sep 17, 2025 18:07:48 UTC – Details)
Brand New Venstar T7850 Thermostat. This thermostat come with built in WiFi to connect to your home network. Once connected you will be able to control your thermostat from your smart phone or computer. You can also customize the thermostat by adding your own pictures just like a digital picture frame. The thermostat does require the use of a common wire for the thermostat to power on, for more info on this you can visit Venstar’s youtube channel for some how to videos. Now compatible with Alexa to ensure the perfect temperature anywhere in your home.
Works with Alexa for voice control (Alexa device sold separately).
Provides the best dimming performance for LED bulbs. Tested and recommended for use with over 1,000 bulbs (for recommended LEDs, please see “Technical Specification”)
Works with up to 100W of dimmable LED/CFL or 300W incandescent/halogen bulbs
Lamp Dimmer simply plugs into a standard outlet and can be used with up to two lamps
Dimmer controls up to 17 bulbs per circuit (based on 8.5W LED bulbs, 60W incandescent equivalent)
Turns lights on/off or raise/lower to adjust brightness using included Pico remote
Connects with more leading smart home brands (including Amazon Alexa, Apple HomeKit, the Google Assistant, Nest, Serena shades, and Sonos) than any other leading smart lighting control brand (Smart Bridge requried)
7-Day programmable, Auto-changeover
Built In Wifi To connect to your smart phone Or Computer
4 State Heat 2 Stage Cooling
Customers say
Customers find the thermostat easy to install and appreciate its temperature control features, with one mentioning it shows both room temperature and another noting it’s great for setting home temperature. The device receives positive feedback for its quality and value. However, the WiFi connectivity and functionality receive mixed reviews, with several customers reporting issues with WiFi connectivity.
8 reviews for Venstar T7850 Colortouch 7 Day Programmable Thermostat with Built in Wifi (Replaces T5900 and Acc0454)
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Original price was: €234.€219Current price is: €219.
Amazon Customer –
Great product and easy to install
Great product, easy to install
Gadget Guy –
Three Cheers for Amazon!
I purchased the Venstar T7850 Colortouch in November for use in my vacation home. After installing it I found the thermostat had a problem and did not communicate with their cell phone app.I contacted Venstar support and explained the problem and even included pictures from the thermostat, but they never replied to my email.As a last resort I contacted Amazon Support. They immediately replied telling me to return the thermostat to them for testing. Within a week I got a reply that a replacement was being shipped.The replacement thermostat worked perfectly as advertised. It’s really handy to check the temperature of a home 200 miles away and know the furnace is working. Last week I used the app to turn the temperature up (the vacation home is in Northern Michigan) so it was warm and comfy when I arrived.A big THANK YOU to AMAZON for their fast and helpful support!
NAME_NOT_RETURNE –
Thanks
Straighten things out with the seller waiting for a new item misunderstanding
Gil K –
Great Features.
Recently I had two of these thermostats installed by my AC company One works fine. The other lost wifi after one day. I ordered this one and I snapped it into place. It had no WiFi. Now a replacement is coming in. I will follow up. Also, the manufacturer Venstar does not have a contact phone number. All is done through email. Very poor customer service.Update. Finally got everything working. It was convoluted but I was able to use the APP to download photos onto the thermostat. I now give 4 stars. The APP works well with my Apple devices and my PC.
Amazon Customer –
This is an excellent wifi thermostat I love the touch screen full keyboard …
This is an excellent wifi thermostat I love the touch screen full keyboard and full screen instructions. Much easier to program than my previous Nest plus shows both the room temp and the cooling and heating set point. I also love being able to show pictures of my kids and send messages directly to my wife such as “running a little late tonight. I have only 4 wires but installed a extra wire devise and it works great.
Rose –
Love it
This works fantastic for my needs. I have it linked with Alexa and to my smart phone via WiFi which is built in. Not external card needed (only for pics). I can use it remotely and/or the touchscreen. Iâve had one for many years, way before Alexa and have loved it. Just had the older model. I love how it was the same size and clipped right onto the old base.
Molly –
A 4 out of 5 Thermostat with 1 out of 5 Tech Support. Correction..0 zero for tech support
Bought the VT7850 in 2015. It runs the heat pump well and the pic display is kinda cool. The IOS app is a bit simplictic but works well. I would give it at least a 4.5 but for the advertised Dual Fuel compatable. It navaigates the sensors and control the Dual Fuel functions, but it doesn’t report any Aux fuel activity. So if it is too cold for your heat pump, the app and Skyport will tell you there was no energy usage during that time. I have had several emails with Venstar support and they have given me the run around for two years. First there was to be a new firmware, but that never came to be, then I was told that because of compatabily, they were going to send me a test unit with the new firmware. That never showed up ether.This was the main reason I went with this thermostat. It is false advertising as far as I’m concerned.
Guy –
Good Product for the Money
I got this thermostat at a reduced price and I live it. I saw one in my dentist office and thought Iâd give it a try. Great connectivity and remote access. Has worked well since installation and I recommend it to anyone who has minimal knowledge