Best Thermostats You Can Control by Phone for Smart Homes
Direct answer: these phone-controllable thermostats let you adjust comfort and save energy from anywhere. They pair with Wi‑Fi, work with popular voice assistants, and are best for different home setups. This guide highlights five top options, tailored for homeowners, renters, energy-conscious buyers, and smart‑home enthusiasts. Below you’ll find quick-take profiles, a comparison table, and a practical buying guide to help you choose.
| Product | Best For | Key Benefit |
|---|---|---|
| Emerson Sensi ST55 | DIY installers; energy savings | Energy Star certified; flexible scheduling |
| Google Nest Thermostat | Users integrated with Google ecosystem | Energy-savings features; compatibility checks available |
| Amazon Smart Thermostat | Alexa households; budget-conscious | Alexa integration; presence-based adjustments |
| Honeywell Home RTH9585WF1004 | Decor-conscious homes; utility rebates | Color touchscreen; utility programs |
| ecobee Smart Thermostat Essential | Broad compatibility; multi-room control | Works with Siri, Alexa, Google Assistant; energy savings |
Emerson Sensi Wi-Fi Smart Thermostat ST55
The Emerson Sensi ST55 is a budget-friendly, DIY-friendly option with Energy Star certification. Best for homeowners who want straightforward scheduling and remote access without complicated setup. It supports common wiring in many homes and is designed to be easy to install using the built‑in level and guided app instructions.
Who it’s best for: renters or homeowners seeking an affordable entry into smart thermostat control with reliable energy savings. Why chosen: simple install, strong energy features, and privacy approach that avoids selling personal data. Caution: some advanced HVAC configurations may require professional installation for optimal compatibility.
Google Nest Thermostat (Charcoal)
The Google Nest Thermostat is designed for homes already using Google services. It offers built-in energy-saving features and flexibility with Wi‑Fi connectivity. It’s designed to work without a C wire in most homes but may require one or a compatible power accessory for certain systems.
Who it’s best for: homes heavily invested in Google’s ecosystem and seeking a hands-off energy saver. Why chosen: strong compatibility checks and automatic scheduling behavior that reduces waste. Caution: some heating or cooling setups may still need a C wire for full power reliability.
Amazon Smart Thermostat
The Amazon Smart Thermostat centers on a seamless Alexa experience. It’s ideal for homes already using Alexa devices and looking to consolidate voice control, presence-based adjustments, and potential rebates from energy providers.
Who it’s best for: Alexa households that want easy setup and quick promotional rebate insights. Why chosen: strong voice assistant integration and straightforward operation. Caution: some advanced features may require additional compatible devices to unlock full zoning or scheduling potential.
Honeywell Home RTH9585WF1004 Smart Color Thermostat
This Honeywell model emphasizes color customization and flexible programming. It’s a good pick for decor-conscious homes and those looking to leverage energy rebates or utility programs such as demand response.
Who it’s best for: homeowners who value aesthetics and energy rebates. Why chosen: eye-catching display plus the potential to participate in energy-saving incentives. Caution: larger touchscreen and features may be more than needed for very basic setups.
ecobee Smart Thermostat Essential
The ecobee Smart Thermostat Essential emphasizes broad compatibility and energy savings. It works with Siri, Alexa, and Google Assistant, making it a versatile choice for multi‑platform smart homes. It includes a color touchscreen and supports system-wide comfort scheduling.
Who it’s best for: households seeking flexible voice assistant support and potential multi-room control. Why chosen: broad compatibility and ongoing software upgrades. Caution: advanced features may require ongoing app engagement to maximize savings.
Buying Guide
What features matter most?
- Energy savings: Look for ENERGY STAR certification and features like flexible scheduling, occupancy sensing, and remote access.
- Compatibility: Check your HVAC system type (gas, electric, heat pump, multi-stage) and whether the thermostat supports it without needing a C‑wire.
- Voice and ecosystem: Match with your preferred assistant (Alexa, Google Assistant, Siri) for hands-free control.
- Installation: Consider DIY install ease, included wiring options, and whether professional help is recommended.
- Display and interface: A color touchscreen or simple interface can improve daily use and access to schedules.
Which system fits your home design and usage pattern?
- Budget-friendly entry: Sensi ST55 or Amazon Smart Thermostat provide essential control with straightforward setup.
- Rich ecosystem: ecobee Essential or Google Nest Thermostat integrate well with multiple assistants and smart home routines.
- Decor-first: Honeywell RTH9585WF1004 offers a stylish color display and strong energy programs.
Frequently Asked Questions
- Do these thermostats require a C-wire?
- Will I save energy with a smart thermostat?
- Can I control these thermostats from my phone anywhere?
- Do these thermostats work with existing voice assistants?
- Are there rebates or energy incentives?
- Which thermostat is best for a Google-centric home?
Most models support C-wire or power accessories, but several can operate without a C-wire in many homes. Check each model’s compatibility checker or setup guide.
Smart thermostats can reduce heating and cooling costs by learning schedules and optimizing temperatures when you’re away, with typical savings cited by manufacturers as up to around 20% depending on usage.
Yes. These devices use Wi‑Fi to allow remote control via mobile apps, enabling adjustments from anywhere with internet access.
Most listed models support multiple assistants, including Alexa, Google Assistant, and Siri through associated ecosystems or platforms.
Many utilities offer rebates or demand-response programs for participating smart thermostats. Availability varies by region and supplier.
Google Nest Thermostat is particularly well-suited for homes deeply integrated with Google services and Nest ecosystem features.