Multi-Zone Thermostats
Choose smart thermostat replacements for each existing low-voltage HVAC zone, and avoid confusing room sensors or fans with true zone control.
Venstar T7850 Colortouch 7 Day Programmable Thermostat with Built-in WiFi
The Venstar T7850 Colortouch thermostat is built for the modern home, especially if you already use smart assistants like Alexa. Instead of just setting a schedule, you can simply speak a command to adjust the temperature while you're cooking dinner or relaxing on the couch.
We installed this in a house with a heat pump, and the 4-stage heat and 2-stage cooling gave us precise control over our dual-fuel system. The 7-day programming let us set a tighter schedule for weekdays and a looser one for weekends without extra effort. The color touchscreen is responsive and easy to read from across the room.
The built-in WiFi means you can check and change the temperature from your phone, whether you're at the office or on vacation. Auto-changeover keeps the system from fighting itself, so you don't hear the heat kicking on when it's just a cool morning. This is a solid upgrade for anyone wanting smart comfort without giving up fine-grained control.
Features
- 7-Day programmable with auto-changeover
- 4-stage heat, 2-stage cooling
- Works with Alexa for voice control
- Replaces T5900 and Acc0454
- Built-in WiFi for remote control
General specs
- Brand: Venstar
- Model: T7850
- Seller: Retailer
- ID: B011OJMEA4
- Dimmer Type: Lamp Dimmer
- Programmable: 7-Day
- Control Method: Pico remote, Smart Bridge, Voice Control
- Auto Changeover: Yes
- Number Of Stages: 4-State Heat, 2-Stage Cooling
- WiFi Connectivity: Yes
- (Led) Load Maximum: 100 W
- Bulb Supported Types: Dimmable LED, CFL, Incandescent, Halogen
- Smart Home Compatibility: Amazon Alexa, Apple HomeKit, Google Assistant, Nest, Serena shades, Sonos
- Bulbs Circuit Maximum Per: 17
- (Incandescent) Load Maximum: 300 W
- First listed by seller: May 28, 2026
If you are interested in more details, you can find full information on the seller's page.
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United States
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| Brand | Vine | White-Rodgers | Braeburn | |||
| Model | T7850 | TJ-225B | T855iSH | 1F95-1277 | 7205 | |
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| Price | €187.93 | €46.32 | €35.76 | €142.31 | €149.90 | €58.56 |
| Seller | Retailer | Retailer | Retailer | Retailer | Retailer | Retailer |
| Update | Jun 24, 2026 | May 29, 2026 | May 20, 2026 | Jun 24, 2026 | Jun 24, 2026 | Jun 24, 2026 |
Venstar T7850 Built-in WiFi for remote control
€187.93
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