The best Wi-Fi thermostats for gas furnaces are the Google Nest Thermostat for its energy-saving features and the Honeywell Home RTH9585WF for its seamless smart home integration.
Upgrading to a smart thermostat can lead to significant cost savings on your energy bills and provide convenient remote control over your home’s climate. These devices offer advanced scheduling, learning capabilities, and compatibility with various HVAC systems, making them a worthwhile investment for modern homeowners.
We’ve tested and reviewed seven top Wi-Fi thermostats specifically for gas furnaces to help you find the perfect fit. Our evaluation focused on ease of installation, user interface, energy efficiency reporting, and overall smart home compatibility. You’ll find detailed comparisons to help you make an informed decision, all within a reasonable budget. Read on to see our top picks and find the ideal thermostat for your needs.
3 Standout Picks: Energy Savings and Smart Home Integration
Start with these 3 standouts. Each leads for a different kind of buyer, so use the badges and quick highlights to find your closest match.
Google Nest Thermostat
- Learns your schedule
- Remote control via app
- Energy saving insights
Honeywell Home RTH9585WF
- Wi-Fi Smart Color Thermostat
- 7 Day Programmable
- Alexa Ready
Google Nest Thermostat
- Energy efficient scheduling
- Remote control via app
- HVAC monitoring alerts
7 Models Side by Side: Features, Best Use Cases, and Tradeoffs
The recommendations above are our strongest matches for different priorities. Below, compare the complete 7-product lineup side by side by rating, standout features, ideal use cases, and practical tradeoffs so you can identify the best fit for your needs.

- Learns your schedule
- Remote control via app
- Energy saving insights

- Wi-Fi Smart Color Thermostat
- 7 Day Programmable
- Alexa Ready

- Energy efficient scheduling
- Remote control via app
- HVAC monitoring alerts

- 7-Day Flexible Scheduling
- Geofence Technology
- ENERGY STAR Certified

- Wi-Fi Smart Thermostat
- Energy Star Certified
- No C-Wire Needed

- No C-wire required
- Remote control
- Energy Star certified

- Works with Alexa and Ring
- Programmable schedules
- Remote temperature control
7 Models Reviewed in Depth
#1. Google Nest Thermostat

Savings Certified
Learning
Home App
The Google Nest Thermostat is a smart choice for optimizing your home’s comfort and efficiency. It learns your habits to automatically adjust the temperature, helping you save energy when you’re away and ensuring a comfortable return. You can easily control it from anywhere using the Google Home app on your phone or tablet, and its HVAC monitoring alerts can help you stay ahead of potential system issues. The sleek design also adds a modern touch to your home.
While it’s designed to work without a C-wire in many cases, some heating-only or heat pump systems might require one for full functionality. This thermostat is ideal for homeowners looking for intelligent energy savings and convenient remote access. If you prioritize a minimalist interface and robust learning capabilities, the Nest Thermostat is a top contender.
Pros
- Intelligent learning capabilities
- Excellent energy savings
- Sleek, modern design
Cons
- May require C-wire
- Fewer advanced customization options
- Limited to Google Home ecosystem
Specifications
#2. Honeywell Home RTH9585WF

Via Wi-Fi
Alexa Ready
Energy Star
You’ll appreciate the Honeywell Home RTH9585WF for its seamless integration into your smart home ecosystem. The customizable color touchscreen makes it a stylish addition, while features like Alexa readiness and remote control via the app offer ultimate convenience. Its compatibility with most forced air systems, including gas furnaces, and Energy Star certification ensure efficient operation and potential energy savings.
While this thermostat is highly capable, be aware that a C-Wire is required for optimal performance, which might add complexity to installation for some users. It’s an excellent choice if you’re looking for advanced features and a personalized aesthetic, but ensure your system supports the C-Wire requirement before purchasing.
Pros
- Vibrant color touchscreen display
- Works with Alexa and Google Home
- Energy Star certified for savings
Cons
- C-Wire required for most systems
- Installation can be complex
- Higher price point
Specifications
#3. Google Nest Thermostat

Smart Home
Certified Efficiency
System Alerts
The Google Nest Thermostat offers a sleek design and intelligent features to manage your home’s climate efficiently. You’ll appreciate its seamless integration with the Google Home ecosystem and the convenience of controlling your temperature remotely via your smartphone. The thermostat’s ability to learn your schedule and automatically adjust to save energy when you’re away makes it a smart choice for reducing utility costs.
While it’s designed for easy installation, some users might find that certain complex HVAC systems require a C-wire for optimal performance. If you’re invested in smart home technology and want a thermostat that’s both stylish and functional, the Nest Thermostat is an excellent option. It provides valuable insights and control, making home comfort effortless.
Pros
- Excellent smart home integration
- Sleek, modern design
- Automatic energy saving adjustments
Cons
- May require C-wire for some systems
- Fewer advanced customization options
- Relies heavily on Google ecosystem
Specifications
#4. Honeywell Home T5 Smart

Certified Efficiency
Remote Access
Scheduling Options
You’ll appreciate the Honeywell Home T5 Smart Wi-Fi Thermostat for its intuitive control and potential for significant energy savings. Its 7-day flexible scheduling and geofence technology allow for personalized comfort, ensuring your home is always at the ideal temperature when you’re there and saving energy when you’re away. The ENERGY STAR certification and monthly energy reports further empower you to monitor and reduce your consumption, potentially saving 8-16% on heating and cooling bills.
While it offers broad compatibility with most heat/cool systems, remember that a C-wire power adapter may be required for certain setups, so check your home’s wiring before purchasing. This thermostat is a solid choice for homeowners looking to upgrade to a smarter, more efficient heating and cooling system without overcomplicating the process.
Pros
- Significant energy savings potential
- Flexible scheduling options
- Remote control via smartphone
Cons
- C-wire may be required
- Geofence can be sensitive
- Limited to Wi-Fi connectivity
Specifications
#5. Sensi Smart Thermostat ST55

No C-Wire
Certified
Via App
The Sensi Smart Thermostat ST55 is an excellent choice for those prioritizing a straightforward, DIY installation. Its ability to work without a C-wire in most applications significantly simplifies the setup process, guided by a user-friendly app. You’ll benefit from its Energy Star certification, which helps in reducing your energy consumption, and the convenience of remote control and scheduling to manage your home’s comfort efficiently.
While it offers robust energy-saving features and smart capabilities, the Sensi ST55’s interface is more button-based than a full touchscreen, which might feel less modern to some users. It’s ideal if you want a reliable, easy-to-install smart thermostat that focuses on core functionality and energy efficiency, but perhaps less so if you demand the most cutting-edge display technology.
Pros
- Simple installation, often no C-wire
- Saves energy with smart scheduling
- Reliable performance from Emerson
Cons
- Basic button interface
- Fewer advanced display features
- App can be slow at times
Specifications
#6. Sensi Lite Smart Thermostat

Certified Savings
Easy Install
Remote Control
The Sensi Lite Smart Thermostat offers a straightforward way to upgrade your home’s comfort and efficiency. You’ll appreciate its easy DIY installation, often without needing a C-wire, and the ability to control your HVAC from anywhere via the mobile app. Its Energy Star certification and features like flexible scheduling and geofencing are designed to help you save significantly on energy bills, with users reporting savings of about 23%.
While it’s a great option for many homes, be aware that some systems, particularly heat pumps or cooling-only setups, may require a C-wire or power accessory for full functionality. If you’re looking for a reliable, user-friendly smart thermostat that prioritizes energy savings and privacy, the Sensi Lite is a solid choice for most homeowners.
Pros
- Simple to install, often without C-wire
- Saves money on energy bills
- User-friendly mobile app control
Cons
- May require C-wire for some systems
- Limited advanced features
- Privacy protection is a key selling point
Specifications
#7. Amazon Smart Thermostat

Smart Home
Savings Focus
Technology
You’ll appreciate the seamless integration of the Amazon Smart Thermostat into your existing Alexa ecosystem. It’s designed to help you save money and energy by creating custom schedules or letting Alexa manage your home’s temperature automatically. The app provides convenient on-the-go control, ensuring comfort whether you’re home or away. Installation is guided by the Alexa app, making it a straightforward DIY project for many.
While it offers robust smart features, some users might find the advanced customization options less intuitive than dedicated smart home hubs. It’s an excellent choice for those already invested in the Amazon smart home environment and seeking reliable energy efficiency without a steep learning curve. If you require extensive third-party integrations beyond Alexa and Ring, you might want to explore other options.
Pros
- Seamless Alexa integration
- Potential energy savings
- Easy app control
Cons
- Limited third-party compatibility
- Advanced features can be complex
- Requires C-wire for some systems
Specifications

Taming Your Thermostat: A Smart Guide to WiFi Comfort for Gas Furnaces
Upgrading to a WiFi thermostat for your gas furnace isn’t just about remote control; it’s about unlocking smarter energy use, enhanced comfort, and greater peace of mind. These devices offer a significant leap from traditional models, allowing you to manage your home’s temperature from anywhere, optimize heating schedules, and potentially reduce your energy bills. Making the right choice ensures you get the most out of your investment for years to come.
Decoding the Digital Dial: Key Features for Your Gas Furnace
When selecting a WiFi thermostat, several crucial elements will dictate its performance and suitability for your gas heating system. Consider these factors to make an informed decision:
- Gas Furnace Compatibility: Ensure the thermostat is explicitly designed to work with single-stage or multi-stage gas furnaces. This is the most critical factor for proper operation.
- Connectivity and App Experience: Look for robust WiFi connectivity and an intuitive mobile app. A user-friendly interface makes scheduling, adjustments, and monitoring effortless.
- Learning and Scheduling Capabilities: Some thermostats learn your habits and automatically create efficient schedules, while others offer more manual control. Decide which approach best suits your lifestyle.
- Energy Saving Features: Many models offer features like geofencing (adjusting temperature based on your location) or detailed energy usage reports to help you identify savings opportunities.
- Smart Home Integration: If you have other smart home devices, check for compatibility with platforms like Amazon Alexa, Google Assistant, or Apple HomeKit for seamless voice control and automation.
- Installation Requirements: While many are designed for DIY installation, some may require a C-wire for continuous power. Check what your system needs and your comfort level with wiring.
Navigating the Nuances: Common Lapses in Judgment
Even with careful consideration, a few common oversights can lead to buyer’s remorse. Be mindful of these potential pitfalls:
- Overlooking the need for a C-wire, which can complicate installation or require professional help if your current wiring doesn’t include it.
- Choosing a thermostat with an overly complex app or limited smart home integration, hindering your ability to fully utilize its features.
- Purchasing a model that isn’t fully compatible with your specific type of gas furnace, leading to incorrect operation or system damage.
Your Smart Home’s New Brain: The Top Gas Furnace WiFi Thermostats
When it comes to keeping your gas furnace humming efficiently, the Google Nest Thermostat is a fantastic all-rounder, while the Honeywell Home RTH9585WF1004 shines for its robust features and voice control integration. If a straightforward, reliable smart experience is your goal, the Sensi Smart Thermostat is a clear winner. All these options offer excellent control and energy savings for your gas heating system.
Don’t wait to upgrade your home’s comfort and efficiency. Click the buttons above to check current pricing and availability for the perfect smart thermostat for your gas furnace!
Final 3 Picks: Energy Savings and Smart Home Integration
Ready to decide? These 3 recommendations remain our strongest choices for different priorities after weighing the full comparison.
Google Nest Thermostat
- Learns your schedule
- Remote control via app
- Energy saving insights
Honeywell Home RTH9585WF
- Wi-Fi Smart Color Thermostat
- 7 Day Programmable
- Alexa Ready
Google Nest Thermostat
- Energy efficient scheduling
- Remote control via app
- HVAC monitoring alerts
