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.
MRCOOL COMFORT MADE SIMPLE MST04 MST04 Smart Programmable Thermostat 4 Heat / 2 Cool Touchscreen
Features
- Compatible with Alexa and Google Assistant
- 3.9 inch LCD touchscreen display
- WiFi capable for remote control
- 4 heat / 2 cool stages
- Modern sleek design with backlight
- Compact size for easy wall mounting
General specs
- Brand: MRCOOL COMFORT MADE SIMPLE
- Model: MST04
- Seller: Retailer
- ID: B0DQR93VFJ
- Brand: MRCOOL COMFORT MADE SIMPLE
- Model: MST04
- Mounting: Wall mountable
- Backlight: Yes
- Screen Size: 3.9 inches
- Connectivity: Wi-Fi
- Display Type: LCD Touchscreen
- Voice Control: Yes
- Remote Control: Yes
- Thermostat Type: Smart, Programmable
- Dimensions (Depth): 3.9 inches
- Dimensions (Width): 3.9 inches
- Number of Cool Stages: 2
- Number of Heat Stages: 4
- Smart Home Compatibility: Alexa, Google Assistant
- First listed by seller: May 28, 2026
If you are interested in more details, you can find full information on the seller's page.
Partner offer temporarily unavailable
Shipping options
Delivery to 
United States
United States
Available
For homeowners in the US managing a rental property or a vacation home, the MrCool Smart Programmable Thermostat MST04 gives you remote control over comfort and energy costs. Unlike basic smart thermostats that just adjust temperature, this device lets you schedule 4 heat and 2 cool stages to match your daily routine. Use the 3.9-inch LCD touchscreen to set a program that lowers heat while you're at work and warms up before you return. The backlit display is easy to read at night. With Wi-Fi connectivity, you can change the temperature from anywhere using the app. Voice control works with Alexa and Google Assistant, so you can adjust settings hands-free. No more worrying about whether you left the AC running. This thermostat gives you practical control over your home's climate.
Similar products comparison
| This item | Recommendations | |||||
|---|---|---|---|---|---|---|
|
MRCOOL COMFORT MADE SIMPLE MST04 Compatible with Alexa and Google Assistant
|
Lennox 15Z69 Alexa-Enabled Voice Control
|
Google T4000ES White Smart WiFi Programmable Thermostat
|
Emerson ST55U White Smart Wi-Fi connectivity
|
Nest Smart Thermostat Fog Programmable WiFi thermostat
|
Smart Wi-Fi Programmable Thermostat 3.5-inch color touch screen
|
|
| Brand | MRCOOL COMFORT MADE SIMPLE | Lennox | Emerson | Energizer | ||
| Model | MST04 | 15Z69 | T4000ES | ST55U | ||
| Color |
|
|
|
|||
| Rating |
|
|
|
|
|
|
| Price | €116.03 | €432.86 | €53.54 | €82.99 | €61.68 | €89.24 |
| Seller | Retailer | Retailer | Retailer | Retailer | Retailer | Retailer |
| Update | Jun 24, 2026 | Jun 24, 2026 | Jun 24, 2026 | Jun 24, 2026 | May 29, 2026 | Jun 24, 2026 |
| Type | Thermostat | Smart WiFi Programmable Thermostat | Smart Wi-Fi Thermostat | |||
| Compatibility | Universal | Smart Home Systems | Most homes in North America | |||
When this device makes sense
Product confidence
Reviews
There are no text reviews yet. If you have experience using this product, please leave a review. It will help other people decide whether this product is right for them.