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Emerson ST25 Smart Thermostat: Save about 23% on HVAC energy
For the homeowner tired of high energy bills and complicated setups, the Sensi Lite Smart Thermostat simplifies climate control. While many focus on smart features, we emphasize data privacy—your comfort settings stay yours, never sold for ads, giving you true peace of mind.
Install it yourself in minutes with the built-in level and clear instructions, avoiding costly technician visits. The app lets you adjust temperatures remotely, so you can cool your home before arriving on a hot day. Geofencing and flexible scheduling cut HVAC energy use by about 23%, putting money back in your pocket. It works with Alexa for voice commands and fits most systems without a C-wire, making upgrade easy.
Features
- Control from anywhere with mobile app
- Easy DIY installation with built-in level
- Privacy protection with no data selling
- Works with Alexa and Wi-Fi
- Common wire not required on most systems
- Save about 23% on HVAC energy
General specs
- Brand: Emerson
- Model: ST25
- Seller: Amazon
- ID: B0BXZ6KXGG
- Connectivity: Wi-Fi
- Power Source: Wired
- Control Methods: App
- Programmable Schedule: Weekly
- Voice Assistant Compatibility: Alexa
- First listed by seller: November 9, 2025
If you are interested in more details, you can find full information on the seller's page.
Amazon live offers
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Top live offer is the offer currently shown first for this Amazon listing. It may differ from the lowest available price.
FBA means the order is fulfilled by Amazon, even when the seller is a third-party merchant.
Shippable means the offer is listed as available for delivery on Amazon.
New, Used and Refurbished describe the item condition shown for that Amazon offer.
Top live offer
€55.33
Free shipping
New
Sold by Amazon
FBA
Shippable
New from
€53.37
Only from New + Shippable live offers
New offers
Sold by Amazon
· FBA · Shippable
€55.33
Third-party seller
· FBA · Shippable
€53.37
Third-party seller
· Shippable
€53.37
Third-party seller
· FBA · Shippable
€53.37
Third-party seller
· FBA · Shippable
€53.37
Third-party seller
· FBA · Shippable
€55.09
Third-party seller
· FBA · Shippable
€55.53
Third-party seller
· FBA · Shippable
€55.95
Third-party seller
· FBA · Shippable
€64.56
Third-party seller
· FBA · Shippable
€64.57
Third-party seller
· Shippable
€68.87
Third-party seller
· Shippable
€75.41
+ €5.65 shipping
Third-party seller
· FBA · Shippable
€85.24
Third-party seller
· Shippable
€87.77
Third-party seller
· Shippable
€90.81
Third-party seller
· Shippable
€94.37
Third-party seller
· Shippable
€94.96
Offers updated: 9/1/26
Affiliate link. As an Amazon Associate I earn from qualifying purchases.
Price History for seller Amazon
Shipping options
Delivery to 
United States
United States
Available
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Emerson ST25 Black Save about 23% on HVAC energy
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| Brand | Emerson | Honeywell Home | Emerson | |||
| Model | ST25 | RENEWRTH8800WF/U | 3rd Gen | ST75W | GA01334-US | G4CVZ |
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| Price | €55.33 | €63.69 | €219.54 | €215.23 | €47.34 | €68.02 |
| Seller | Amazon | Amazon | Amazon | Amazon | Amazon | Amazon |
| 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 | |||
Emerson ST25 Black Save about 23% on HVAC energy
€55.33
Affiliate link. As an Amazon Associate I earn from qualifying purchases.
When this device makes sense
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