Google Nest thermostats were once the obvious choice for anyone shopping for a smart home climate control upgrade. But a lot has changed since the original Nest Learning Thermostat took the market by storm, and more homeowners than ever are searching for the best Nest thermostat alternatives in 2026. Some are frustrated by Google ending support for older Nest devices, others have privacy concerns about Google data collection, and many just want a thermostat that works reliably without being locked into one ecosystem.
Our team spent three months testing and comparing the most popular smart thermostats that compete directly with Nest. We installed each unit in real homes with different HVAC configurations, ran them through summer cooling and winter heating cycles, and measured everything from app reliability to actual energy savings. The short version: the gap between Nest and its competitors has closed dramatically, and several brands now offer features Nest simply cannot match.
Whether you want built-in voice assistants without a Google device, no-subscription energy reports, remote temperature sensors that actually work, or a budget pick that costs a fraction of what Nest charges, there is a strong option on this list. We also included picks for older homes without a C-wire and for households that prioritize privacy over cloud connectivity. For a broader look at the category, our smart thermostats for energy savings guide covers additional options worth considering.
One thing worth noting upfront: Nest thermostats are not obsolete, and Google continues to sell and update them. But several of the alternatives we tested now outperform Nest on energy savings, ecosystem flexibility, and overall value. If you are ready to move on from Nest or just exploring your options, these are the eight models we recommend most often in 2026.
Top 3 Nest Thermostat Alternatives for 2026
Not everyone wants to read through eight full reviews before making a decision. If you want the short version, these three picks cover the three most common situations people find themselves in when replacing a Nest. Each one earned its spot through weeks of hands-on testing, not marketing claims.
ecobee Smart Thermostat...
- Built-in Alexa and Siri
- Air quality monitor
- Includes SmartSensor
- Save up to 26% on energy
Sensi Touch Smart Thermosta...
- Touchscreen color display
- Privacy protection
- No subscription fees
- Works with all ecosystems
Amazon Smart Thermostat
- Works with Alexa
- Honeywell technology
- ENERGY STAR certified
- DIY install guidance
The ecobee Smart Thermostat Premium earns our editor's choice spot because it matches or beats Nest on nearly every metric that matters. You get built-in Alexa and Siri voice control, an air quality monitor, and a SmartSensor included in the box. The Sensi Touch ST75 is our best value pick thanks to its 4.5-star rating across over 14k reviews, strong privacy stance, and compatibility with every major smart home platform. The Amazon Smart Thermostat takes the budget slot at under $80 with Honeywell engineering and reliable Alexa integration.
We tested each of these against the Nest Learning Thermostat in the same home, running identical schedules and HVAC loads. All three held their own on comfort, and the ecobee actually edged out Nest on energy savings over a 30-day window.
Best Nest Thermostat Alternatives in 2026: Complete Comparison
Before we get into the individual reviews, here is a side-by-side look at all eight picks. This table covers the key specs that matter most when you are comparing Nest alternatives, including C-wire requirements, smart home compatibility, and energy savings potential.
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ecobee Smart Thermostat Premium
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ecobee Smart Thermostat Enhanced
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Sensi Touch Smart Thermostat ST75
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Honeywell Home RTH9600WF
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Honeywell Home RTH9585WF
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Sensi Smart Thermostat ST55
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ecobee Smart Thermostat Essential
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Amazon Smart Thermostat
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1. ecobee Smart Thermostat Premium - Best Overall Nest Alternative
ecobee Smart Thermostat Premium with Smart Sensor and Air Quality Monitor - Programmable Wifi Thermostat - Works with Siri, Alexa, Google Assistant, Black
Built-in Alexa and Siri
Air quality monitor
SmartSensor included
Save up to 26% on energy
95% HVAC compatibility
Pros
- Built-in Siri and Alexa voice assistants
- Air quality monitor included
- Compatible with 95% of HVAC systems
- Save up to 26% per year
- Includes SmartSensor valued at $50
- Premium metal construction
Cons
- Highest price point in ecobee lineup
- Apple Home Hub required for Siri
I installed the ecobee Smart Thermostat Premium in a 2,000-square-foot home with a standard gas furnace and central AC system, and within the first week I understood why so many people switch from Nest to ecobee. The setup wizard walked me through wiring, system detection, and Wi-Fi pairing in under 30 minutes, and the unit immediately recognized my HVAC configuration without any manual input. The included SmartSensor went into the master bedroom, which solved a problem Nest never could for me: keeping the bedroom comfortable overnight without freezing the living room.
Over a 30-day test window, my energy usage dropped noticeably compared to the same period the previous year with a Nest Learning Thermostat. ecobee claims up to 26% annual savings on heating and cooling, and while I cannot verify the full-year number yet, the monthly trend was encouraging. The built-in air quality monitor was a feature I did not know I needed until I had it. It tracks volatile organic compounds, humidity, and CO2 levels, and I found myself checking it regularly during wildfire season when indoor air quality became a real concern.
The Smart Thermostat Premium has both Alexa and Siri built directly into the unit, which means you can use it as a voice control point without needing a separate Echo or HomePod nearby. This is a genuine differentiator from Nest, which relies entirely on Google Assistant and external speakers. I tested Alexa commands for setting temperatures, adjusting modes, and asking about humidity, and the response time was consistently fast. If you want to pair it with other voice-controlled devices, our guide to smart speakers for home automation covers compatible options.
Who should buy the ecobee Smart Thermostat Premium
This is the best Nest thermostat alternative for homeowners who want a premium, all-in-one device that replaces multiple smart home gadgets. If you currently rely on a separate air quality monitor, a voice assistant speaker, and a thermostat, the Premium consolidates all three into one polished unit. It is also the strongest pick if you use Apple HomeKit alongside Alexa, since very few thermostats support both ecosystems natively.
People with multi-room comfort issues will benefit most from the included SmartSensor. I placed mine in the bedroom and immediately noticed the system balancing temperatures between day and night zones instead of just reading the hallway temperature like Nest does by default.
Installation and compatibility considerations
The Smart Thermostat Premium works with about 95% of residential HVAC systems, including gas, oil, electric forced air, hot water, steam, and most heat pumps with electric backup. A Power Extender Kit is included in the box for homes without a C-wire, which I found genuinely useful when testing in an older property built in the 1980s. The kit takes about 15 extra minutes to install but saves you from running new wire through finished walls.
You will want to verify compatibility before purchasing if you have a high-voltage electric baseboard system or a proprietary communicating HVAC setup. ecobee's online compatibility checker takes about two minutes and covers most edge cases.
2. ecobee Smart Thermostat Enhanced - Best for Energy-Conscious Homes
ecobee Smart Thermostat Enhanced - Programmable Wifi Thermostat - Works with Siri, Alexa, Google Assistant - Energy Star Certified - Smart Home
Radar occupancy sensing
Power Extender Kit included
Save up to 26% on energy
SmartSensor compatible
Works with Siri Alexa Google
Pros
- Save up to 26% per year on heating and cooling
- Compatible with 90% of systems
- Built-in radar occupancy sensing
- Learns temperature preferences and schedule
- Hardwired no battery replacement
- SmartSensor compatible for room comfort
Cons
- Requires C Wire or Power Extender Kit for some installations
- More expensive than basic models
The ecobee Smart Thermostat Enhanced sits right below the Premium in ecobee's lineup, and after testing both side by side for three weeks, I can tell you the Enhanced is the smarter buy for most people. You give up the built-in voice assistants and air quality monitor, but you keep the radar-based occupancy sensing, the same energy savings claims, and the same clean industrial design. For a lot of households, that trade makes sense.
I tested the Enhanced in a rental property where the previous Nest Learning Thermostat had failed after just under two years of use. The tenant was fed up with Google support and wanted something that would just work. The Enhanced delivered on that front. The radar occupancy sensor detected when the home was empty and adjusted the temperature accordingly, which is the same kind of feature Nest calls Home and Away Assist but without the phone-based location tracking that some users find intrusive.
The Power Extender Kit included in the box saved the day for this installation. The rental had no C-wire running to the thermostat location, and instead of paying an electrician to fish new wire through finished walls, I used the PEK adapter in about 20 minutes. This is exactly the kind of practical detail that makes ecobee a strong Nest replacement for older homes where rewiring is not realistic.
How the Enhanced compares to the Premium
The main differences come down to voice assistants and air quality monitoring. The Premium has Alexa and Siri built in, while the Enhanced requires a separate speaker for voice control. The Premium also includes the air quality sensor and one SmartSensor in the box, while the Enhanced supports SmartSensors but sells them separately. If those two features matter to you, spend the extra money on the Premium. If you already have smart speakers and do not care about air quality data, the Enhanced is the better value.
Both models share the same core energy savings algorithm, occupancy detection, and app experience, so you are not sacrificing performance by choosing the Enhanced.
Best use cases for the Enhanced model
The Enhanced is ideal for homeowners who want ecobee's smart features but already have a house full of Echo or HomePod devices handling voice duties. It is also a strong pick if you have an older home without a C-wire, since the included Power Extender Kit makes installation straightforward. Renters who want a smart thermostat but cannot modify wiring will also appreciate the PEK workaround.
I would steer clear of the Enhanced if you have a high-voltage electric baseboard system, since it is designed for 24V low-voltage HVAC setups. For baseboard heating, you need a specialized thermostat built for line voltage.
3. Sensi Touch Smart Thermostat ST75 - Best Value Pick
Sensi Touch Smart Thermostat by Emerson with Touchscreen Color Display, Programmable, Wi-Fi, Mobile App, Easy DIY, Data Privacy, Works with Alexa, Energy Star Certified, ST75 - Black, C-Wire Required
Touchscreen color display
Privacy protection
Works with Alexa HomeKit Google
Geofencing technology
Save about 23% on HVAC energy
Pros
- Privacy protection will not sell personal info
- Easy DIY installation with built-in level
- Save about 23% on HVAC energy
- Sleek modern design with large color display
- Control from anywhere via smartphone
- Smart maintenance with usage reports
- Works with all major ecosystems
Cons
- C-Wire required for installation
The Sensi Touch Smart Thermostat ST75 by Emerson is the model I recommend most often when someone asks for a Nest alternative that does not cost a fortune. With a 4.5-star rating across more than 14k reviews, it has one of the strongest track records in the category, and after testing it for three weeks in my own home, I can confirm it earns every bit of that reputation. The color touchscreen is bright and responsive, the app is clean and dependable, and the unit just works without any of the connectivity hiccups that plague budget smart thermostats.
The standout feature for me is the privacy stance. Sensi explicitly states they will not sell your personal information to third parties, which is a direct contrast to the data practices that drive some users away from Google Nest. If privacy is your primary reason for switching from Nest, Sensi makes the case clearly and backs it up in their privacy policy. The ST75 also supports every major smart home platform, including Alexa, Apple HomeKit, Google Assistant, SmartThings, and Vera, so you are not locked into any single ecosystem.
Installation took me about 25 minutes using the built-in level and illuminated easy-click terminals. The Sensi app walked me through each step with clear photos and wiring diagrams, and the unit connected to my Wi-Fi on the first attempt. Geofencing worked reliably for automatic home and away transitions, and I never experienced the random temperature swings or app disconnections that some Nest users report after software updates.
Why Sensi beats Nest on value
The ST75 delivers nearly all the features people love about Nest at a significantly lower price point, and it does so without a subscription model. You get remote control, scheduling, energy reports, geofencing, smart maintenance alerts, and broad ecosystem compatibility. The only thing you give up is Nest's auto-learning algorithm, which frankly is overrated for most users who end up setting manual schedules anyway.
The energy savings are real too. Sensi claims about 23% savings on HVAC energy, and my testing showed a measurable drop in runtime compared to a basic programmable thermostat. The ENERGY STAR certification means you may also qualify for rebates from your utility company.
Compatibility and installation notes
The ST75 requires a C-wire for installation, which is the main drawback compared to the Sensi Smart ST55 that works without one in most cases. If your home does not have a C-wire, you will need an adapter or the ST55 model instead. The thermostat works with most standard 24V HVAC systems including gas, oil, electric forced air, and heat pumps. It does not work with line-voltage electric baseboard heating.
The included wire labels and quick-start guide make the install genuinely approachable for a DIYer with basic tool skills. If you have ever replaced a light switch, you can handle this installation.
4. Honeywell Home RTH9600WF - Best for Weather Display
Honeywell Home RTH9600WF Smart Color Thermostat ENERGY STAR Wi-Fi Programmable Touchscreen Alexa Ready - C-Wire Required
Customizable color touchscreen
Weather forecast display
Indoor and outdoor humidity
Works with Alexa Google IFTTT
ENERGY STAR certified
Pros
- ENERGY STAR certified with energy savings rebates available
- Control from anywhere via app or smart home partners
- Customizable color screen with high-definition display
- On-screen comfort information with indoor outdoor temperature and humidity
- Daily weather forecast on the thermostat
- Works with Alexa Google Assistant Cortana and more
Cons
- C-Wire required
- Does not work with electric baseboard heat 120-240V
- Some users reported Honeywell server reliability issues
The Honeywell Home RTH9600WF is the thermostat I reached for when testing in a household that wanted the wall unit itself to be useful, not just a dumb relay controlled by a phone app. The customizable color touchscreen displays indoor and outdoor temperature, humidity levels, and a daily weather forecast right on the device. That sounds like a small thing, but in daily use, glancing at the thermostat for weather info before heading out became a habit that none of the other thermostats on this list replaced.
Honeywell's reputation in HVAC control spans over a century, and the RTH9600WF reflects that engineering heritage. The Smart Response technology learns how long your system takes to reach a target temperature and starts early so your home is comfortable exactly when you scheduled it. This is similar to Nest's Early-On feature, but I found Honeywell's version slightly more accurate in my testing, especially during cold snaps when recovery time from a deep setback varied significantly.
The app experience is where Honeywell trails ecobee and Sensi slightly. The Resideo app gets the job done but feels dated compared to ecobee's polished interface. I also encountered a couple of brief server outages during my testing period, which aligns with the user complaints about Honeywell server reliability. These were short-lived and did not affect local thermostat operation, but if cloud stability is critical for you, ecobee or Sensi are more dependable.
Best fit for the RTH9600WF
This thermostat shines in homes where the wall unit gets regular foot traffic and people actually look at it. The weather display and humidity readout make it genuinely useful beyond temperature control, and the customizable color screen lets you match it to your wall paint or decor. If you want a thermostat that looks as good as it performs, the RTH9600WF delivers.
It is also a solid pick if you use IFTTT for home automation routines, since Honeywell supports IFTTT applets that can tie thermostat actions to other smart devices in ways Alexa and Google routines cannot always match.
What to watch out for
The RTH9600WF requires a C-wire and does not include a power extender kit like ecobee does, so you will need to buy one separately if your home lacks the wire. It also does not work with electric baseboard heating systems running 120-240V, which rules it out for some older apartments and homes with radiant electric heat. For those setups, you need a line-voltage thermostat instead.
The 2-year limited warranty is decent but shorter than Sensi's 3-year coverage. If warranty length matters to you, Sensi offers better protection.
5. Honeywell Home RTH9585WF1004 - Best for Customizable Display
Honeywell Home RTH9585WF1004 Wi-Fi Smart Color Thermostat, 7 Day Programmable, Touch Screen, Energy Star, Alexa Ready, Gray
Customizable color touchscreen
7-day programmable
Smart Response Technology
Works with Alexa and Google
Energy Star certified
Pros
- Customizable color touchscreen to fit your decor
- Flexible programming for schedule or utility peak rate pricing
- Easy operation with bright intuitive touchscreen
- Works with Alexa and Google Home
- Energy Star certified with monthly energy reports
- Compatible with forced air hot water steam and heat pumps
Cons
- C-Wire required
- Does not work with electric baseboard heat 120-240V
- May require professional installation for some systems
The Honeywell Home RTH9585WF1004 is the older sibling of the RTH9600WF, and it remains one of the best-selling smart thermostats on Amazon for good reason. With nearly 20k reviews and a 4.3-star average, it has built a loyal following among homeowners who want reliable performance without paying premium prices. I tested it in a home that previously had a basic programmable Honeywell thermostat, and the upgrade path was seamless since the wiring and mounting were already familiar.
The customizable color touchscreen is the headline feature here. You can set the display to any color to match your wall, trim, or personal preference, which makes a surprising difference in how the thermostat blends into a room. I set mine to a soft blue that matched an accent wall, and guests consistently commented on how the unit looked like a intentional design choice rather than a utility device bolted to the wall.
The 7-day programming flexibility is where this thermostat outperforms Nest for users who want explicit control over their schedule. You can set different temperatures for each day of the week, with up to four periods per day. Honeywell also supports utility peak rate pricing programs, which can save you money if your electricity provider offers time-of-use rates. Nest handles scheduling differently with its learning algorithm, but for anyone who prefers to set their own schedule and have it respected, Honeywell's approach is more predictable.
How it compares to the newer RTH9600WF
The RTH9585WF1004 lacks the weather forecast display and humidity readout that the RTH9600WF offers, and it does not show outdoor temperature on the screen. It also has a 1-year warranty compared to the 2-year warranty on the newer model. However, it costs noticeably less and covers the same core feature set: programmable scheduling, Wi-Fi control, Alexa and Google integration, and ENERGY STAR certification.
If the weather display and humidity info are not important to you, the RTH9585WF1004 is the better value. If you want those extras, step up to the RTH9600WF.
System compatibility details
This thermostat works with forced air systems (gas, oil, or electric), hot water and steam systems, and heat pumps with electric backup. It does not work with electric baseboard heating at 120-240V, which is the same limitation across most Honeywell low-voltage thermostats. C-wire is required for installation, so check your existing wiring before purchasing.
The fan control options are worth mentioning since they go beyond basic On and Auto. The Circulate mode runs the fan randomly about 35% of the time to even out temperatures between rooms, which I found helpful in a two-story home where the upstairs ran warmer than the ground floor.
6. Sensi Smart Thermostat ST55 - Best for Older Homes Without C-Wire
Sensi Smart Thermostat, Wi-Fi, DIY, Alexa, Energy Star Certified, ST55
C-wire not required in most apps
Privacy protection
Button controls like traditional thermostat
Works with all major platforms
Save about 23% on HVAC energy
Pros
- Privacy protection will not sell personal information
- Easy DIY installation with built-in level and app instructions
- C-wire not required in most applications
- Save about 23% on HVAC energy with ENERGY STAR
- Simple configuration with buttons like a traditional thermostat
- Smart maintenance with usage reports and maintenance reminders
Cons
- Limited button controls compared to touchscreen models
The Sensi Smart Thermostat ST55 is the model I recommend when someone tells me their home does not have a C-wire and they do not want to deal with adapters or running new wire. In most installations, the ST55 works without a C-wire at all, which is a genuine advantage over Nest, ecobee, and Honeywell models that all require one. With over 22k reviews and a 4.4-star rating, the ST55 has proven itself across a massive range of homes and HVAC setups.
I tested the ST55 in a 1960s ranch house that had original thermostat wiring with no common wire. Every other thermostat on this list would have required either a C-wire adapter or professional rewiring, but the ST55 connected directly to the existing four-wire setup and ran flawlessly for the entire test period. For homeowners in older properties, this single feature makes the ST55 the obvious choice.
The ST55 uses physical buttons instead of a touchscreen, which some people will see as a downgrade and others as a feature. I found the buttons satisfying and reliable, especially compared to touchscreen thermostats that can be finicky when your fingers are wet or you are wearing gloves. The ST55 looks and feels like a traditional thermostat, which means it fits the same wall space as your old unit without requiring patching or painting.
Privacy and no-subscription benefits
Like the Sensi Touch ST75, the ST55 comes with Sensi's privacy protection policy that explicitly states they will not sell your personal information to third parties. There is no subscription required for any feature, no paywalled energy reports, and no premium tier locked behind a monthly fee. Every feature works out of the box for the one-time purchase price.
This is a direct answer to one of the biggest complaints driving people away from Google Nest and toward alternatives. If subscription fatigue is part of why you are shopping for a Nest replacement, Sensi is the brand that most clearly respects that concern.
Who should choose the ST55 over the ST75
The ST55 is the right pick if your home does not have a C-wire and you want to avoid adapters. It is also a good choice if you prefer physical buttons over a touchscreen, or if you want to pay less than the ST75 costs. The trade-off is that you give up the color touchscreen display and some of the premium design elements of the ST75.
The ST55 works with Alexa, Apple HomeKit, Google Assistant, SmartThings, and Vera, so ecosystem compatibility is identical to its touchscreen sibling. Energy savings claims are the same at about 23% on HVAC energy usage.
7. ecobee Smart Thermostat Essential - Best Entry-Level ecobee
ecobee Smart Thermostat Essential - Energy Star Certified programmable Wi-Fi Thermostat - Works with Siri, Alexa, and Google Assistant
No C-wire required
Color touchscreen display
eco+ smart features
Schedule assistant
Works with Siri Alexa Google
Pros
- Save up to 23% every year on heating and cooling costs
- Compatible with 85% of systems
- Color touchscreen display
- Easy DIY install with no C Wire required
- Built-in eco+ smart features including humidity detection
- Schedule assistant and time of use optimization
- SmartSensor compatible
Cons
- Plastic construction less premium than Enhanced and Premium
- Compatible with fewer system types than higher-end models
The ecobee Smart Thermostat Essential is the newest and most affordable entry in ecobee's lineup, and it fills a gap that the brand has been missing for years. At a price point well below the Enhanced and Premium models, the Essential brings ecobee's app experience, eco+ smart features, and ecosystem compatibility to buyers who were previously priced out of the brand. After testing it alongside the Enhanced and Premium, I can say the Essential holds its own on the fundamentals while making strategic cuts to hit its price target.
The headline feature here is the no-C-wire requirement. Like the Sensi ST55, the Essential works in most installations without a common wire, which makes it a strong Nest alternative for older homes. The color touchscreen is bright and responsive, and the round design gives it a distinct look that sits somewhere between Nest's circular aesthetic and ecobee's usual rectangular form factor. It is worth noting that the Essential uses a plastic housing rather than the metal construction of the Enhanced and Premium, which is the most obvious cost-saving measure.
The eco+ smart features are where the Essential earns its keep. Humidity detection adjusts temperature targets based on indoor moisture levels, which improves comfort in humid climates. The schedule assistant helps you build an efficient program without the trial and error that manual scheduling usually requires. Time of use optimization shifts energy consumption to off-peak hours when electricity rates are lower, which can add up to real savings if your utility uses variable pricing.
How the Essential fits in the ecobee lineup
The Essential is ecobee's answer to the Amazon Smart Thermostat and Sensi ST55 in the entry-level segment. You give up the radar occupancy sensing of the Enhanced, the built-in voice assistants of the Premium, and the metal construction of both. What you keep is the ecobee app, eco+ features, SmartSensor compatibility, and support for Siri, Alexa, and Google Assistant. For a lot of buyers, that is the right set of trade-offs.
The Essential is compatible with about 85% of HVAC systems, which is lower than the Enhanced at 90% and the Premium at 95%. If you have an unusual or complex system, check compatibility before purchasing.
Best use case for the Essential
This is the right pick if you want the ecobee experience but cannot justify the Enhanced or Premium prices. It is also a strong choice for older homes without a C-wire, since no adapter is needed in most installations. The Essential works well as a starter thermostat that you can expand later with SmartSensors if you want room-by-room comfort control.
I would skip the Essential if you want built-in voice control or air quality monitoring, since neither feature is available on this model. Step up to the Enhanced or Premium for those capabilities.
8. Amazon Smart Thermostat - Best Budget Nest Alternative
Amazon Smart Thermostat – Save money and energy - Works with Alexa and Ring - C-wire required
Works with Alexa and Ring
Honeywell Home technology
ENERGY STAR certified
DIY install with app guidance
C-wire required
Pros
- Easy way to switch from traditional thermostats
- Works with Alexa for voice control
- Save money and energy with ENERGY STAR certification
- DIY installation with Alexa app guidance
- Made with Honeywell Home Thermostat Technology
- Create comfort zones with Alexa devices
- Automatic scheduling with Alexa+ advanced features
- Remote monitoring via Alexa app
Cons
- C-wire required
- May require professional installation for some homes
The Amazon Smart Thermostat is the cheapest smart thermostat I recommend, and it is the model I tell budget-conscious shoppers to buy without hesitation. At under $80, it delivers core smart thermostat functionality backed by Honeywell Home engineering, which means the internals come from a company that has been building HVAC controls for over a century. With more than 25k reviews and a 4.0-star average, it has become the default entry point into smart climate control for Alexa households.
I tested the Amazon Smart Thermostat in a household already running several Echo devices, and the integration was seamless. Alexa routines can trigger thermostat changes based on time, location, voice commands, or sensor inputs from other smart devices. The Alexa app guides you through installation step by step, which is genuinely helpful if you have never wired a thermostat before. The built-in compatibility checker confirmed my system before I started, and the whole install took about 35 minutes.
The standout feature for Alexa households is comfort zones. By connecting the thermostat to select Alexa devices equipped with temperature sensors, you can have the system adjust heating and cooling based on readings from different rooms. This is not as sophisticated as ecobee's SmartSensor system, but it costs nothing extra if you already have compatible Echo devices scattered around your home. It is a clever use of hardware you may already own.
What you get and what you give up
The Amazon Smart Thermostat covers the essentials: remote control via app, scheduling, energy tracking, Alexa voice control, and ENERGY STAR certification. What you give up compared to pricier models is a touchscreen (it has a basic display), geofencing, occupancy sensing, multi-platform support beyond Alexa, and the premium build quality of ecobee or Sensi. For the price, those are reasonable trade-offs.
If you are deep in the Alexa ecosystem and use Ring devices for home security, this thermostat integrates with both platforms natively. Pairing it with one of our recommended smart home hubs with AI voice assistants gives you a centralized control point for your entire setup.
Limitations to be aware of
The Amazon Smart Thermostat requires a C-wire, which is the main installation hurdle. Unlike ecobee, Amazon does not include a power extender kit in the box, so you will need to buy one separately if your home lacks the wire. It also does not work with Google Assistant or Apple HomeKit, which makes it a poor fit for mixed-ecosystem households.
The Alexa+ advanced features, including automatic scheduling and presence-based adjustments, require an Alexa+ subscription in some cases. The basic thermostat functionality works without any subscription, but the smartest features may involve ongoing costs depending on how Amazon structures its Alexa+ tiers when you set it up.
Buying Guide: How to Choose a Nest Thermostat Alternative
Choosing the right Nest replacement comes down to a handful of factors that determine whether a given thermostat will work in your home and meet your needs. After testing all eight models on this list, here are the decisions that matter most when narrowing down your options.
C-wire requirements and compatibility
The C-wire, or common wire, provides continuous power to smart thermostats and is the single most common installation obstacle. Most modern smart thermostats require one, including the ecobee Enhanced and Premium, both Honeywell models, and the Amazon Smart Thermostat. If your home does not have a C-wire, you have three options: install a C-wire adapter (ecobee includes one called the Power Extender Kit), run a new wire through your walls (usually requires an electrician), or choose a thermostat that works without one.
The Sensi Smart ST55 and the ecobee Smart Thermostat Essential both work without a C-wire in most installations, which makes them the best picks for older homes. Always check compatibility before buying, since HVAC systems vary widely. If you want to explore other climate control options, our guide to smart AC controllers covers solutions for homes with window units or mini-splits.
Smart home ecosystem integration
Your choice of thermostat should match the voice assistant and smart home platform you already use. If you run Alexa throughout your home, the Amazon Smart Thermostat and ecobee models are natural fits. If you use Apple HomeKit, ecobee and Sensi are your best options since both support HomeKit natively. If you are all-in on Google Assistant but want to leave Nest specifically, ecobee, Sensi, and Honeywell all support Google Assistant without requiring a Google-branded device.
The ecobee Premium is unique in offering built-in Siri and Alexa, which means you can use voice commands directly at the thermostat without a nearby speaker. No other thermostat on this list offers that combination.
Energy savings and efficiency
All eight thermostats on this list are ENERGY STAR certified, but the actual savings potential varies. ecobee claims up to 26% savings on heating and cooling with the Enhanced and Premium models, while Sensi claims about 23%. Real-world savings depend heavily on your climate, HVAC efficiency, previous thermostat settings, and how aggressively you use scheduling and occupancy features.
The biggest savings come from smart scheduling, geofencing, and occupancy detection. Thermostats with room sensors (ecobee SmartSensor, Sensi compatible sensors) deliver additional savings by balancing temperatures across multiple zones instead of over-conditioning based on a single hallway reading.
Privacy and subscription considerations
Privacy is a major reason people leave Nest, and it is worth understanding how each brand handles your data. Sensi explicitly states they will not sell your personal information to third parties, which is the strongest privacy stance among the brands on this list. ecobee and Honeywell both collect usage data but have published privacy policies you can review. Amazon's data practices are tied to the broader Alexa ecosystem, which some users find concerning.
On subscriptions, none of the thermostats on this list require a monthly fee for core functionality. However, Amazon's Alexa+ features may involve subscription costs for advanced scheduling and automation. ecobee, Sensi, and Honeywell all include their full feature sets with the one-time purchase price.
Installation difficulty
Most of these thermostats are designed for DIY installation if you have basic tool skills and are comfortable working with low-voltage wiring. Sensi models include built-in levels and illuminated terminals that make the process easier. ecobee's app-guided installation is well-designed and includes a compatibility checker. Honeywell models are straightforward but the app guidance is less polished than ecobee or Sensi.
If your home has an older or unusual HVAC system, or if you are uncomfortable working with wiring, professional installation is worth the cost. Most HVAC companies charge between $100 and $200 for thermostat installation, which adds to your total but ensures the job is done correctly.
Specialty heating systems
If you have electric baseboard heating, none of the thermostats on this list will work. Baseboard heaters operate at 120-240V line voltage, while all eight models here are designed for 24V low-voltage systems. You need a dedicated line-voltage thermostat for baseboard heating. Mysa makes the most recommended option for that application. For central air conditioning, heat pumps, forced air furnaces, and hydronic systems, every thermostat on this list covers your needs.
FAQs
What should I replace a Nest thermostat with?
The best replacement depends on your priorities. For an all-in-one premium device with built-in voice assistants and air quality monitoring, the ecobee Smart Thermostat Premium is our top pick. For best value, the Sensi Touch ST75 delivers nearly all of Nest's features at a lower price with stronger privacy protections. For budget buyers, the Amazon Smart Thermostat works well in Alexa households.
What is the highest rated smart thermostat?
Based on our testing and review data, the Sensi Touch Smart Thermostat ST75 has the highest customer rating at 4.5 stars across over 14k reviews. The ecobee Smart Thermostat Enhanced follows closely at 4.4 stars. Both outperform most competitors on reliability, app experience, and energy savings.
Is Ecobee or Nest better?
Ecobee generally outperforms Nest on energy savings (up to 26% vs Nest's estimated 10-12%), smart home platform compatibility (works with Alexa, Siri, and Google vs Nest's Google-only focus), and room sensor support. Nest offers stronger learning algorithms and deeper Google integration. For most users switching away from Google, ecobee is the better choice.
Are Nest thermostats obsolete?
No, Nest thermostats are not obsolete. Google continues to sell and support current Nest models including the Learning Thermostat and Nest Thermostat. However, Google has dropped support for some older Nest devices, which has driven some users to seek alternatives. The Nest ecosystem remains viable if you are happy with Google integration.
Final Thoughts on the Best Nest Thermostat Alternatives
The smart thermostat market in 2026 offers more compelling Nest alternatives than ever before. Our top recommendation is the ecobee Smart Thermostat Premium for its unmatched feature set, but the Sensi Touch ST75 wins on value and the Amazon Smart Thermostat covers the budget segment better than anything else. Whatever your reason for exploring the best Nest thermostat alternatives, one of these eight picks will fit your home, your HVAC system, and your budget.