6 Best Honeywell Gas Thermostats of 2026

This Matter-certified powerhouse redefines what a smart thermostat should be—seamless integration, intelligent automation, and rock-solid reliability. The dual-band Wi-Fi connectivity and native support for Apple HomeKit, Alexa, and Google Assistant make it a top contender for homes already invested in major ecosystems. What truly sets the X2S apart is its auto-away technology powered by geofencing and schedule learning, which actively reduces energy waste without sacrificing comfort—perfect for families seeking effortless efficiency.

In real-world testing, the X2S shines in multi-zone homes with 2H/2C conventional or 2H/1C heat pump systems, delivering smooth transitions between heating and cooling cycles. The 32°F low-heat setpoint is ideal for frost-sensitive environments, while the humidity monitoring adds an extra layer of indoor climate control. However, users without a C-wire may face installation hurdles, as the power adapter isn’t included, and the app—though robust—can feel slightly cluttered during initial setup.

Positioned between budget models and premium all-in-ones, the X2S lands as a highly capable middle ground—more connected than the RTH9585WF but less customizable than the RTH9600WF. It’s best suited for tech-savvy homeowners who want strong automation and cross-platform compatibility without paying for flashy visuals. Compared to the T5, it offers broader system support and Matter certification, making it a smarter long-term investment for future-proof smart homes.

For those who want reliable, no-frills temperature control, the X2P delivers with surgical precision. This isn’t a smart thermostat, and that’s exactly its strength—it focuses on bulletproof scheduling, clear visibility, and simple operation, making it perfect for users tired of app dependencies or Wi-Fi dropouts. The backlit 5-2 day programming lets you set weekday and weekend temps in minutes, while the extended 32°F setpoint ensures freeze protection in unoccupied homes.

During daily use, the large display with high-contrast font proves invaluable for older adults or anyone needing quick readability. Installation is streamlined thanks to the universal wall plate, which simplifies future upgrades. It handles standard 1H/1C systems—common in gas, oil, or forced-air setups—without fuss. That said, it lacks remote access or energy reporting, and the AA battery power means periodic replacements, which could be a hassle for hard-to-reach installations.

When stacked against the smart RTH9585WF or T5, the X2P stands out by eliminating complexity. It’s the ideal drop-in replacement for aging RTH2300 units or basic HVAC systems where smart features aren’t needed. Renters, secondary homes, or users prioritizing durability over digital flair will appreciate its straightforward design. While it doesn’t offer geofencing like the T5, it outshines it in reliability and ease of use for non-tech users.

The RTH9585WF hits a sweet spot between affordability and intelligence, offering full smart functionality without the premium price tag. Its vibrant color touchscreen is a standout—easy to navigate and bright enough for low-light areas—while Energy Star certification and demand response capability make it a favorite among utility-savvy homeowners. The flexible 7-day scheduling adapts to irregular routines, and Alexa/Google Assistant compatibility ensures hands-free control.

In practice, it excels in forced-air and heat pump systems, delivering consistent performance with quick response times. The monthly energy reports provide actionable insights, helping users fine-tune usage patterns. However, the C-wire requirement can be a barrier, especially in older homes, and the interface, while intuitive, lacks the dynamic customization of newer models like the RTH9600WF. It doesn’t support Microsoft Cortana, limiting its smart home reach.

Compared to the T5, the RTH9585WF offers a larger, more responsive screen and richer app feedback, making it better for users who want detailed energy tracking. It’s less flashy than the RTH9600WF but delivers nearly the same core smart features at a leaner footprint. Ideal for homeowners upgrading from analog thermostats who want smart control without complexity, it strikes a balance the T5 can’t match on user experience.

Timeless design meets mechanical reliability in the CT87K1004—a thermostat that proves simplicity still has a place in modern homes. Its iconic round dial isn’t just nostalgic; it offers tactile, precise control within ±1°F, making it a favorite in vintage homes or minimalist interiors where digital clutter is undesirable. The decorative cover ring hides wall imperfections, preserving aesthetics during upgrades—ideal for landlords or historic properties.

It performs flawlessly in heat-only systems, particularly steam or hot water radiators, where digital thermostats often struggle with short cycling. There’s no programming, no batteries, no app—just consistent, maintenance-free operation for years. However, this simplicity means zero energy savings from scheduling or remote adjustments, and it won’t integrate with smart home systems. It’s purely functional, not adaptive.

Unlike programmable or smart models, the CT87K1004 serves a very specific niche: users with basic heating needs who value durability and design over automation. It’s the anti-smart thermostat, yet perfect for cabins, rental units, or secondary spaces. While the X2P offers scheduling and the T5 offers energy tracking, this model wins on aesthetic longevity and install-and-forget reliability—a true classic in an age of complexity.

This is the flagship smart thermostat Honeywell fans have been waiting for—feature-rich, visually striking, and deeply intelligent. The customizable HD color screen doesn’t just look premium; it dynamically displays indoor/outdoor temperature, humidity, and weather forecasts, turning climate control into an immersive experience. With Matter, Alexa, Google, and Cortana support, it’s the most universally compatible model in the lineup, ideal for advanced smart homes.

In real-world use, its Energy Star-certified engine delivers tangible savings, with personalized energy tips and utility rebates helping offset long-term costs. It handles complex systems—heat pumps, steam, forced air—with ease, and the on-screen comfort dashboard eliminates app dependency for daily adjustments. Still, the C-wire requirement remains a barrier, and while the interface is polished, first-time users may find the menu depth overwhelming compared to the T5’s simplicity.

When compared to the RTH9585WF, the RTH9600WF offers superior display quality, broader voice assistant support, and richer data visualization, justifying its position as the best overall choice. It’s perfect for homeowners who want one thermostat to rule them all—no compromises on design, intelligence, or integration. While the T5 wins on price, the RTH9600WF delivers a complete, future-ready ecosystem that outclasses even the X2S in versatility.

Don’t let its budget-friendly positioning fool you—the T5 packs serious smarts into a compact, affordable package. Engineered for energy-conscious households, it leverages geofencing and auto-away mode to cut HVAC runtime when no one’s home, with studies showing potential savings of 8–16% on heating and cooling bills. The 7-day flexible scheduling adapts to shifting routines, making it ideal for unpredictable lifestyles.

It performs exceptionally well in standard gas or oil furnace systems, responding quickly to temperature changes and syncing seamlessly with Alexa and Google Assistant. The ENERGY STAR certification unlocks utility rebates, adding hidden value. However, like other C-wire-dependent models, it requires a power adapter for homes without one, and the screen—while functional—is smaller and less vibrant than the RTH9585WF or RTH9600WF.

Against the X2S, the T5 trades Matter certification and humidity sensing for lower cost and simpler setup—making it the best entry point into smart thermostats. It’s perfect for renters, first-time upgraders, or anyone who wants app control and energy savings without overspending. While the RTH9600WF offers more features, the T5 delivers 90% of the intelligence at a fraction of the complexity, making it the smartest pick for value-focused buyers.