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.
Emerson ST25 Smart Thermostat
Product details
General specs
- Brand: Emerson
- Model: ST25
Starting from €62.01
Last price update: 10/3/26
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| Brand | Emerson | Honeywell Home | Emerson | |||
| Model | ST25 | RENEWRTH8800WF/U | 3rd Gen | ST75W | GA01334-US | G4CVZ |
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| Price | €62.01 | €69.87 | €232.04 | €223.12 | €62.43 | €104.86 |
| Seller | Retailer | Retailer | Retailer | Retailer | Retailer | Retailer |
| Update | Jun 24, 2026 | Jun 24, 2026 | Jun 24, 2026 | May 19, 2026 | Jun 24, 2026 | Jun 24, 2026 |
| Connectivity | Wi-Fi | Wi-Fi | Wi-Fi | Wi-Fi | Wi-Fi | Wi-Fi |
| Power Source | Wired | Hardwired | Hardwired | Wired | ||
| Control Methods | App | App, Remote Control | Touchscreen, App | App, Manual, Voice | App, Voice | |
| Programmable Schedule | Weekly | 7-Day | Weekly | |||
| Voice Assistant Compatibility | Alexa | Alexa, Google Assistant | Google Assistant | |||
When this device makes sense
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