7 Best iPhone Thermostats to Buy in 2025

The Google Nest Learning Thermostat (4th Gen) isn’t just smart—it’s intuitively brilliant, blending sleek design with adaptive intelligence that reshapes how you experience home comfort. With a 60% larger display and Dynamic Farsight, it reads the room—literally—showing you the temperature, weather, or time from across the house without lifting a finger. What truly sets it apart is its self-learning capability: it observes your preferences over time and builds a personalized schedule, while New Adaptive Eco and natural heating/cooling logic silently cut energy waste when you’re away or during passive solar gain. If you’ve ever forgotten to adjust the thermostat before leaving or battled uneven room temps, this device doesn’t just solve those problems—it anticipates them.

In real-world use, the Nest shines brightest in multi-season homes where outdoor fluctuations impact indoor comfort. Its integration with the included Nest Temperature Sensor (2nd gen) lets you target specific zones—say, a nursery or sun-drenched living room—ensuring those spaces hit your ideal temp on schedule. The thermostat connects seamlessly via Matter and Wi-Fi, offering smooth control through Apple HomeKit, Siri, Alexa, and Google Assistant, making it a powerhouse for mixed smart home ecosystems. It installs without a C-wire in most homes and delivers HVAC health alerts, but power-hungry users may notice occasional delays in remote response during peak network load—nothing critical, but noticeable if you’re used to instant feedback.

When stacked against the ecobee Smart Thermostat Enhanced, the Nest Learning Thermostat trades some advanced humidity automation for superior design elegance and learning sophistication. While ecobee offers slightly higher potential savings (26% vs. Nest’s 12–15%), the Nest’s permission-based adjustment notifications give you more control over changes, making it ideal for users who want smart automation without feeling sidelined. It’s the best choice for homeowners who value aesthetic refinement, long-term learning, and seamless Apple Home integration, all wrapped in a thermostat that feels more like a piece of modern art than a HVAC controller. For those already in the Google or Apple ecosystem, it delivers smarter insights and smoother automation than the budget Nest model—at a meaningful step up in intelligence.

The ecobee Smart Thermostat Enhanced is a feature-packed powerhouse that brings precision comfort and aggressive energy savings into homes craving real control. Engineered to save up to 26% annually on heating and cooling, it uses occupancy sensing and SmartSensor compatibility to focus comfort where people actually are—not where the thermostat happens to be mounted. Its standout feature? Humidity-aware temperature adjustment: it understands that 72°F feels colder at 30% humidity than at 60%, so it tweaks settings to maintain perceived comfort, not just a number on a screen. For Apple users who rely on Siri shortcuts or want Apple Home-centric automation, this thermostat delivers rock-solid integration with zero lag.

On the performance front, the ecobee Enhanced thrives in multi-level or irregularly used homes, where hot and cold spots are common. The optional SmartSensors (sold separately or included in bundles) are game-changers, letting you trigger heating or cooling based on bedroom occupancy or shut things down when the guest room sits empty for days. It includes a Power Extender Kit, so no C-wire? No problem—installation is genuinely DIY-friendly. The Ecobee app is intuitive, with clean graphs showing usage trends and savings estimates, though the interface can feel slightly cluttered when managing multiple sensors. While it lacks the self-learning AI of the Nest 4th Gen, its predictive pre-heating and geofencing are impressively accurate, syncing with your phone to warm the house just before you pull into the driveway.

Compared to the Google Nest Learning Thermostat, the ecobee Enhanced offers greater customization and raw efficiency, but with less visual flair or autonomous learning. It doesn’t adapt to your habits over time—it relies on your input and scheduling. That makes it perfect for tech-savvy homeowners who want granular control and maximum energy rebates, especially those in regions with demand-response programs. While the Nest feels more “set-and-forget,” the ecobee rewards engagement. Against the budget ecobee Essential, it adds remote sensor support and enhanced automation, making it the better value for larger homes. If you want Apple Home reliability with serious energy chops, this model outperforms even pricier rivals in real-world comfort tuning.

Don’t let the minimalist white ring fool you—the Google Nest Thermostat (Snow) is the budget-savvy genius of smart climate control, packing core intelligence into an affordable, clean design. It automatically turns down when you leave, leveraging phone-based geofencing to avoid heating or cooling an empty house, and it integrates fully with Apple Home, Siri, and Matter, making it one of the most accessible entry points into a mixed-brand smart home. While it lacks the learning algorithms of its 4th-gen sibling, it still offers Savings Finder, which analyzes your usage and suggests schedule tweaks to cut bills—perfect for users who want guidance, not full automation.

In daily use, this thermostat performs admirably in smaller homes or apartments with straightforward HVAC systems. It controls heating and cooling via the Google Home app, and you can adjust temps with voice commands through Alexa or Google Assistant—though Siri support requires Apple Home bridging. It works without a C-wire in most cases, lowering installation friction, and maintains basic scheduling even during Wi-Fi outages. However, it doesn’t include a remote sensor, and its HVAC monitoring alerts are useful but not as detailed as higher-end models. If your home has significant temperature imbalances, you’ll miss the room-by-room control that ecobee or Nest Learning offers.

Against the ecobee Smart Thermostat Essential, the Nest Thermostat (Snow) trades slightly better Apple integration for fewer out-of-box features—no sensor support, no humidity adjustment. It’s best for renters or first-time users who want reliable, no-frills automation without overspending. While the Nest Learning Thermostat offers richer AI and better energy insights, this model delivers about 80% of the experience at half the cost. It’s the ideal stepping stone into smart home comfort—simple, effective, and deeply compatible—especially if you’re already using Google or Apple devices daily.

The ecobee Smart Thermostat Essential is the sweet spot of value and simplicity, delivering core smart thermostat benefits without the bloat. It’s Energy Star certified, supports Apple Home, Alexa, and Google Assistant, and offers reliable geofencing and scheduling to keep your home comfortable and efficient. Unlike its pricier sibling, the Enhanced model, it doesn’t support SmartSensors—so you can’t target room-specific temps—but it still automatically adjusts when you’re away, using your phone’s location to save energy. For most single-zone homes, that’s more than enough to cut costs and boost comfort.

Performance-wise, it’s snappy, responsive, and built for everyday reliability. The interface is clean, the app is intuitive, and setup is a breeze—especially with the included Power Extender Kit that eliminates C-wire worries. It connects via 2.4GHz Wi-Fi, supports 7-day scheduling, and sends maintenance alerts to help avoid HVAC surprises. While it lacks humidity compensation or learning features, it holds its schedule firmly and syncs well with voice assistants. The only real limitation? No remote sensor support, which means if your thermostat is in a hallway, it won’t know the bedroom is freezing.

Pitted against the Google Nest Thermostat (Snow), the ecobee Essential costs slightly more but offers better build quality and a crisper interface, with more consistent Apple Home performance. Compared to the ecobee3 Lite, it modernizes the design and drops outdated connectivity quirks. It’s perfect for users who want a no-nonsense, Apple-friendly thermostat that just works—no learning curve, no complexity. While the ecobee Enhanced offers more features, this model gives you 90% of the core functionality at a leaner price, making it the true best value for straightforward smart climate control.

The meross Smart Thermostat is the budget king with Matter smarts, offering full Apple Home, Alexa, and Google Assistant integration at a price that undercuts nearly every competitor. For just under $80, you get 7-day programmable scheduling, local Matter control, and real-time energy usage tracking in the Meross app—features typically reserved for higher-end models. Its 2.4GHz Wi-Fi connectivity and C-wire requirement ensure stable power and responsiveness, while the DIY-friendly setup walks you through installation in under 30 minutes. If you’re upgrading from a basic programmable thermostat and want Apple Home compatibility without breaking the bank, this is a compelling leap.

In practice, the meross thermostat delivers solid performance for small to mid-sized homes with conventional HVAC systems. Scheduling is flexible, and the thermostat maintains settings even during internet outages, a rare and welcome perk. The app provides filter change alerts and system diagnostics, giving you peace of mind about furnace health. However, it lacks built-in humidity sensing or occupancy detection, so it can’t auto-adjust for comfort the way ecobee or Nest can. Also, while it supports Apple Home via Matter, automation responses can lag slightly behind native devices—fine for temp changes, but not ideal for complex scenes.

Compared to the Google Nest Thermostat (Snow), the meross unit costs $20 less and includes Matter support out of the gate, but sacrifices geofencing and learning features. Against the ecobee Essential, it’s cheaper but requires a C-wire—making it less flexible for older homes. It’s not as polished as Google or ecobee, but for renters or DIYers on a tight budget, it delivers remarkable functionality and Apple Home access where few budget thermostats dare. If you want a no-frills, Matter-ready thermostat that works with iPhone and Siri, this is the most affordable path to a modern smart home.

The ecobee3 Lite remains a reliable workhorse in the smart thermostat world, earning its title as best for Apple Home integration thanks to rock-solid Siri support and HomeKit stability. Even years after its initial release, it holds its own with 23% annual energy savings, remote app control, and optional SmartSensor support to eliminate hot and cold spots. Its clean black finish and intuitive interface make it a stylish addition to any wall, and the included Power Extender Kit ensures most users can install it without a C-wire—a major win for DIYers.

Real-world testing shows the ecobee3 Lite excels in homes already invested in the Apple ecosystem, where Siri voice commands and Home app automations fire instantly and reliably. You can say ‘Hey Siri, set the living room to 70°’ and it just works—no delays, no re-pairing. The thermostat supports geofencing and flexible scheduling, but lacks humidity adjustment and newer features like Matter. It also requires a Smart Security subscription to enable open-window detection with sensors, which feels outdated in 2024. Still, for users who prioritize Apple-first performance and proven durability, it’s a trustworthy choice.

When compared to the ecobee Smart Thermostat Essential, the 3 Lite offers older hardware but better sensor integration and slightly deeper automation. Against the Nest Learning Thermostat, it lacks visual polish and AI learning, but wins on consistent Apple compatibility. It’s ideal for long-term Apple users who want a no-nonsense, proven performer that integrates flawlessly with iPhone and HomeKit. While newer models offer more features, the ecobee3 Lite remains the most dependable bridge between HVAC systems and Apple Home, especially for those who value reliability over flash.

The Honeywell Home Smart Color Thermostat stands out with a vibrant, customizable display that turns climate control into a design statement—choose any color to match your wall or mood. It’s Energy Star certified, offers on-screen weather and humidity data, and supports Alexa, Google Assistant, and Cortana, making it a conversational piece as much as a functional one. For users who want instant visual feedback and utility integration, it shines brightest—especially with demand response programs that reward energy-saving behavior during peak hours. If your utility offers rebates, this thermostat could pay for itself fast.

In daily operation, the Honeywell delivers precise scheduling and solid remote control via app, with fan circulation modes (On, Auto, Circulate) that improve air quality and comfort. However, it requires a C-wire, limiting its use in older homes, and doesn’t support Apple Home or Matter, which is a major drawback for iPhone users. The touchscreen is responsive, but the interface feels dated compared to Nest or ecobee. It lacks room sensors and geofencing, so it can’t adapt to your presence—making it more of a smart display than a smart thinker. It’s best for HVAC traditionalists who want Wi-Fi control and a colorful, informative screen without full home automation.

Against the ecobee3 Lite, it loses on Apple integration and sensor support, but wins on display customization and utility program compatibility. Compared to the Google Nest Thermostat, it offers richer on-screen data but less intelligence. It’s ideal for users in rebate-eligible areas who want a feature-rich programmable thermostat with Alexa, not full smart home immersion. While it can’t compete with Matter-enabled models on future-proofing, its color screen and energy reporting make it the best choice for visual customization and utility engagement.