No C Wire Options
Compare no-C-wire smart thermostats by power method: included adapters and extenders, battery power, and the line-voltage systems to rule out.
Google T4000ES Hubless Smart Thermostat
Product details
General specs
- Brand: Google
- Model: T4000ES
Starting from €98.17
Last price update: 10/4/26
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| Brand | Honeywell Home | Emerson | Emerson | |||
| Model | T4000ES | 3rd Gen | GA01334-US | RENEWRTH8800WF/U | ST25 | ST75W |
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| Price | €98.17 | €232.04 | €62.43 | €69.87 | €62.01 | €223.12 |
| Seller | Retailer | Retailer | Retailer | Retailer | Retailer | Retailer |
| Update | Jun 24, 2026 | Jun 24, 2026 | Jun 24, 2026 | Jun 24, 2026 | Jun 24, 2026 | May 19, 2026 |
| C-Wire | Required | Required | Required | |||
| Dimensions | 4.88, 2.32, 6.46 | 6, 8, 1.5 | 3.31, 1.07, 3.31 | |||
| Scheduling | Weekly | Weekly | Weekly | |||
| Connectivity | Wi-Fi | Wi-Fi | Wi-Fi | Wi-Fi | Wi-Fi | Wi-Fi |
| Display Type | LCD | LCD | Color LCD | |||
| Power Source | Hardwired | Hardwired | Hardwired | Wired | ||
| Control Methods | App, Voice | App, Remote Control | App, Manual, Voice | App | Touchscreen, App | |
| OS Compatibility | Android, iOS | Android, iOS | Android, iOS | |||
| Compatible Systems | Air Conditioner, Electric Boiler, Electric Floor Heating, Fan Coil Unit, Gas Boiler, Hydronic Floor Heating, Water Heating | Air Conditioner, Gas Boiler, Hydronic Floor Heating, Water Heating | Air Conditioner, Electric Boiler, Electric Floor Heating, Fan Coil Unit, Gas Boiler, Hydronic Floor Heating, Water Heating | |||
| Smart Home Compatibility | Amazon Alexa, Google Assistant | Amazon Alexa | Amazon Alexa, Google Assistant | |||
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