9 Best Two Stage WiFi Thermostat (November 2026)

The best two stage WiFi thermostats include the Google Nest Thermostat for simple smart scheduling, the ecobee Smart Thermostat Essential for affordable staged-system control, and the ecobee Smart Thermostat Premium for room-by-room comfort.

On this page (5 sections)

1. Which two stage WiFi thermostat is best for your system?
2. Best two stage WiFi thermostats compared
3. How do you choose a two stage WiFi thermostat?
4. How should you install and set up a two-stage WiFi thermostat?
5. Which two stage WiFi thermostat should you buy?

The best two stage wifi thermostat for most homes is the Google Nest Thermostat, but your HVAC wiring and stage support must match before you buy. Choose by system compatibility first, then compare controls, scheduling and app features.

A two-stage system uses lower output for ordinary demand and higher output when more heating or cooling is needed. That makes stage terminals and compatibility settings more important than a touchscreen alone.

If the thermostat cannot call for the second stage, your furnace, air conditioner or heat pump may run longer or fail to meet demand on very hot or cold days. Wiring matters too, since some smart models need a common wire for steady power, while workarounds depend on your exact system and current wiring.

Controls come next once compatibility is settled, including a color touchscreen, a phone app, weekly scheduling or occupancy based adjustments. If you are unsure what equipment you have, start with What HVAC Systems Work with Smart Thermostats?.

Remote access is worth weighing early if you travel or work away from home. Smart home integration can also tip the balance, especially for models that work with Google Assistant, Alexa or Apple HomeKit.

HVAC monitoring and maintenance reminders can flag a possible issue early, although they do not replace a qualified HVAC professional. Take time to confirm stages, voltage and terminal labels to prevent a return or stalled install.

Our picks at a glance

1. 1
   Best for simple smart scheduling

   Google Nest Thermostat

   9.7/10 our score

   See it on Amazon
2. 2
   Best for affordable staged-system control

   ecobee Smart Thermostat Essential

   9.6/10 our score

   See it on Amazon
3. 3
   Best for room-by-room comfort

   ecobee Smart Thermostat Premium

   9.2/10 our score

   See it on Amazon

4. 4

   ecobee Smart Thermostat Enhanced

   Best for occupancy-based schedules
   Check it
5. 5

   Vine Smart Thermostat for House with Nightlight

   Best for a large readable touchscreen
   Check it
6. 6

   Riseem WiFi Thermostats for Home Smart Thermostat

   Best for supported single-stage systems
   Check it
7. 7

   Honeywell TH8321WF1001 Touchscreen Thermostat Wifi Vision Pro

   Best for a large staged touchscreen
   Check it
8. 8

   Pro1 T855iSH WiFi Thermostat

   Best for advanced stage support
   Check it
9. 9

   Inkbird WiFi Temperature Controller ITC308 Reptile Freezer

   Best for plug-in temperature control
   Check it

Which two stage WiFi thermostat is best for your system?

The best two stage WiFi thermostat is the one that supports your equipment's stage count, voltage and wiring. Google Nest and ecobee offer the strongest smart-home options, while Honeywell and Pro1 provide clearer support for systems with several stages.

Start with your system rather than the feature list. A thermostat may look ideal in the app, yet still be the wrong match if it lacks the terminals your equipment needs.

Voltage is another quick filter worth checking. Most options here are built for low voltage systems, but you should confirm that detail against your current setup before you compare screens or speakers.

For everyday homes with staged heating or cooling, Google Nest and ecobee models cover a wide range of needs. They pair app control with scheduling and voice support in ways that suit busy households.

Honeywell and Pro1 deserve attention when stage count grows beyond the basics. Their focus is less on smart extras and more on matching equipment that calls for several levels of output.

That distinction helps narrow the field quickly. Choose the smart focused models for connected control, and choose the stage focused models when your wiring diagram asks for more stages.

Best two stage WiFi thermostats compared

These picks are ordered by score, with the strongest overall match first. The list includes conventional smart thermostats, stage-focused controls and one plug-in controller that is useful only for a different type of temperature-control job.

1

Google Nest Thermostat: Best for simple smart scheduling

9.7/10Our score

• Wi-Fi
• Programmable schedule
• Remote control
• HVAC monitoring

Google Nest Thermostat combines Wi-Fi control, scheduling and HVAC alerts in a compact wall-mounted design. Confirm compatibility because some heating, cooling, zone-controlled and heat pump systems may need a C wire or compatible power accessory.

See it on Amazon

Pros

• Remote control
• Google Home and voice integration
• HVAC monitoring

Cons

• C-wire needs vary by system
• No lock feature

Google Nest Thermostat is the easiest overall fit for readers who want app control, schedules and a familiar smart-home platform. It uses Wi-Fi and can be controlled through the Google Home app from a phone, laptop or tablet.

The thermostat turns itself down when you leave and supports programmable schedules. HVAC monitoring can send alerts about potential issues on eligible systems, while maintenance reminders can help you keep up with routine care.

Google says the thermostat is designed to work without a C wire in most homes. Some heating-only, cooling-only, zone-controlled and heat pump systems may need a C wire or another compatible power accessory, so check compatibility before installation.

The compact wall-mounted unit has a 3.31 x 3.31 x 1.07 in size and uses 2 AAA batteries. It also works with Google Assistant, Alexa and Matter-certified voice assistants through compatible devices.

Choose it when app-based scheduling and Google Home control matter most. Check the Google Nest compatibility checker before you commit to the wiring.

2

ecobee Smart Thermostat Essential: Best for affordable staged-system control

9.6/10Our score

• Wi-Fi
• Color touchscreen
• Auto-scheduling
• Works with many 24 VAC systems

The ecobee Smart Thermostat Essential is a strong fit when you want a color touchscreen and broad 24 VAC compatibility. Its Power Extender Kit is sold separately for homes without a C wire.

See it on Amazon

Pros

• Color touchscreen
• Supports selected staged conventional systems
• Apple HomeKit, Google Assistant and Alexa

Cons

• Compatibility must be checked
• Power Extender Kit sold separately

ecobee Smart Thermostat Essential suits homes that want a color touchscreen and broad compatibility with selected 24 VAC systems. It supports conventional configurations listed as 2H/1C or 1H/2C, along with a 2H/1C heat pump setup and boilers.

You can adjust the temperature on the touchscreen or through the ecobee app. Auto-scheduling and home or away adjustments help match the thermostat to daily routines.

ecobee lists compatibility with gas, oil and electric systems, but the exact wiring still matters. The Power Extender Kit is sold separately for homes without a C wire, so check the system before planning a DIY installation.

The thermostat measures 3.62 x 3.62 x 0.91 in and includes a backplate, screws, drywall plugs and wire labels. It also works with Apple HomeKit, Google Assistant and Alexa.

Pick it when a lower-cost ecobee design with a touchscreen is more useful than room sensors. Verify your equipment with the ecobee compatibility checker.

3

ecobee Smart Thermostat Premium: Best for room-by-room comfort

9.2/10Our score

• Wi-Fi
• Included SmartSensor
• Built-in air quality monitor
• Siri or Alexa built in

The ecobee Smart Thermostat Premium adds an included SmartSensor, air quality monitoring and built-in voice control. It suits homes with hot or cold rooms, provided the system passes ecobee's compatibility check.

See it on Amazon

Pros

• Included SmartSensor
• Air quality monitoring
• Power Extender Kit and trim kit included

Cons

• Larger and heavier than several picks
• Some security features require a subscription

ecobee Smart Thermostat Premium is the strongest choice here for room-by-room comfort. The included SmartSensor detects activity in another room, which can help the thermostat respond to the spaces your household uses instead of relying only on the thermostat location.

The Premium also has a built-in air quality monitor, alerts when air quality drops and reminders to change a furnace filter. Its built-in smart speaker supports Siri or Alexa, and it can stream Spotify playlists or podcasts.

The box includes the thermostat, SmartSensor, trim plate, wire labels, mounting hardware and a Power Extender Kit for systems without a C wire. ecobee says it works with 95% of HVAC systems, but a compatibility check remains necessary.

The black metal thermostat measures 4.09 x 4.09 x 2.9 in and weighs 1.3 lb. Its larger size and extra features make it better for buyers who want more than basic temperature control.

Choose it for occupied-room sensing and indoor air information. Some security functions require an ecobee Smart Security subscription.

4

ecobee Smart Thermostat Enhanced: Best for occupancy-based schedules

9.1/10Our score

• Wi-Fi
• Occupancy sensing
• Remote app control
• Power Extender Kit included

The ecobee Smart Thermostat Enhanced uses occupancy sensing and scheduling to adjust comfort when people are home, away or asleep. It includes a Power Extender Kit and trim kit for many installations.

See it on Amazon

Pros

• Occupancy sensing
• Remote control
• Three-year manufacturer warranty

Cons

• SmartSensors sold separately
• Compatibility still needs confirmation

ecobee Smart Thermostat Enhanced is a balanced choice for homes that want occupancy sensing without the Premium model's added speaker and air-monitoring focus. It can adjust temperature when people are away or asleep and preheat or precool before arrival.

The ecobee app supports remote adjustments from a smartphone, tablet or Apple Watch. The thermostat also works with Alexa, Google Assistant, Apple HomeKit and SmartThings.

ecobee says the Enhanced model is compatible with 90% of HVAC systems. The box includes a Power Extender Kit for systems without a C wire, a trim kit, wire labels, screws, drywall plugs and a quick-start guide.

The black metal wall thermostat measures 4.09 x 4.09 x 0.94 in. SmartSensors can be added for room-by-room comfort, but they are sold separately.

Pick it when you want occupancy-based scheduling and broad smart-home support. If your main goal is a room sensor included in the box, the Premium is the better match.

5

Vine Smart Thermostat for House with Nightlight: Best for a large readable touchscreen

9.0/10Our score

• 4.3-inch touchscreen
• Nightlight
• 7-day and 8-period programming
• Alexa and Google Assistant

The Vine Smart Thermostat suits buyers who want a large 4.3-inch touchscreen, nightlight and flexible programming. It requires a C wire and should be matched carefully to the stated 24V system types.

See it on Amazon

Pros

• Large touchscreen
• Nightlight
• 7-day, 8-period scheduling

Cons

• C wire required
• Compatibility check is essential

Vine Smart Thermostat for House with Nightlight is a good fit for readers who want a large display that remains easy to see in a dark hallway. Its 4.3-inch touchscreen includes a nightlight and supports 7-day scheduling with 8 periods.

The Vine thermostat uses Wi-Fi and can be controlled through the Vine or Smart Life app. Alexa and Google Home support add voice control for compatible smart-home setups.

Vine states that the thermostat works with selected 24V AC conventional systems, including 2H/2C configurations, and heat pumps with auxiliary or emergency heat. It requires a C wire for all Vine thermostats, so homes without one need a different plan.

The package includes the thermostat, wall plate, mounting hardware, wire labels, installation guide and a jumper wire. It measures 4.84 x 3.35 x 1.02 in.

Choose it for the large touchscreen and nightlight. Confirm the exact system type before installation because the C-wire requirement is firm.

6

Riseem WiFi Thermostats for Home Smart Thermostat: Best for supported single-stage systems

8.8/10Our score

• 2.4 GHz Wi-Fi
• 7-day scheduling
• App remote control
• Backlit LCD

Riseem is included as a wiring comparison because its limits show what not to choose for a two-stage system. It supports single-stage 1 heat/1 cool equipment and does not support multi-stage systems or heat pumps.

See it on Amazon

Pros

• Clear terminal requirements
• 7-day programming
• 2.4 GHz Wi-Fi app control

Cons

• Not compatible with two-stage HVAC
• C wire required

Riseem WiFi Thermostats for Home Smart Thermostat is not a two-stage choice. It is included as a wiring warning because it supports only conventional single-stage 1 heat/1 cool systems and does not support multi-stage systems or heat pumps.

Compare single-stage WiFi thermostats if your system needs one heating and one cooling stage.

The thermostat requires a 24V C-wire power supply and cannot run on batteries. Its supported terminals are RH, RC, W, Y, G and C, while W2, Y2, O/B, E, L, AUX and several other terminals are not supported.

Riseem uses 2.4 GHz Wi-Fi, not 5 GHz Wi-Fi. The app provides remote temperature changes, 7-day scheduling and system monitoring, while the backlit LCD helps with operation in dark areas.

The plastic wall-mounted thermostat measures 4.72 x 3.86 x 0.98 in. It includes two screws and anchors, an operating manual and cable labels.

Choose it only when your equipment is single-stage and matches the stated terminals. For two-stage equipment, move up to a thermostat that explicitly supports W2 or Y2 stage control.

7

Honeywell TH8321WF1001 Touchscreen Thermostat Wifi Vision Pro: Best for a large staged touchscreen

8.7/10Our score

• Large touchscreen
• Wi-Fi
• Weekly scheduling
• Up to 3 heat and 2 cool stages

The Honeywell TH8321WF1001 is a practical choice when your equipment needs up to 3 heat and 2 cool stages. Its large touchscreen supports weekly schedules, while the Total Connect Comfort app provides remote control.

See it on Amazon

Pros

• Supports several stages
• Large touchscreen
• Remote app control

Cons

• Larger wall footprint
• Battery information lists 2 AAA batteries required

Honeywell TH8321WF1001 Touchscreen Thermostat Wifi Vision Pro 8000 is a strong match for systems needing up to 3 heat and 2 cool stages. Its large touchscreen makes local control straightforward, while the Total Connect Comfort app adds remote temperature control.

The thermostat supports a schedule for each day of the week. That gives you separate timing for workdays and weekends instead of relying on one repeated schedule.

Its stated dimensions are 4.96 x 4.65 x 1.14 in, making it one of the larger wall controls here. The product data also lists 2 AAA batteries as required.

That larger footprint is a real trade off to consider before you buy. It can cover marks left by an older thermostat, but it also needs clear wall space.

The touchscreen design suits households that prefer direct control at the wall. Large controls are easier to read at a glance, which can help guests or family members adjust the temperature.

Remote control through the app adds convenience when you are away from home. You can check the setting and make a change from a phone without walking back to the hallway.

Set up still depends on correct wiring for your stage configuration. Photograph the old thermostat before you remove it, and compare each label to the new wiring diagram.

This model suits buyers who value stage support and a large display over a compact design. It is less suited to small wall areas.

8

Pro1 T855iSH WiFi Thermostat: Best for advanced stage support

8.5/10Our score

• Wi-Fi
• 7-day or 5/1/1 programming
• Up to 4 heat and 2 cool stages
• Menu-driven controls

The Pro1 T855iSH targets multi-stage and light commercial applications with menu-driven programming and several scheduling choices. Verify the exact stage count for your equipment before wiring because the supplied descriptions differ.

See it on Amazon

Pros

• Several stage configurations described
• 7-day and 5/1/1 programming
• Universal sub-base

Cons

• Hardwire only
• Exact supported stage configuration needs confirmation

Pro1 T855iSH WiFi Thermostat is aimed at multi-stage applications, light commercial buildings and homes that want menu-driven programming. Its title states support for 4 heat and 2 cool stages, while the description lists up to 5 heat and 3 cool for heat pump applications.

Because those stage descriptions differ, verify the exact configuration for your equipment before connecting wires. This is especially important when your system uses auxiliary heat or more than two cooling stages.

The thermostat supports 7-day, 5/1/1 or non-programmable operation. Wake, leave, return and sleep icons help organize a schedule, and the 2.83-inch digital display keeps the control smaller than the Honeywell.

The T855iSH includes color-coded terminal blocks and a universal sub-base. Product data describes it as hardwire only.

Pick it when advanced stage support and a menu-driven interface are priorities. Confirm the final stage count with Pro1 or an HVAC professional before installation.

9

Inkbird WiFi Temperature Controller ITC308 Reptile Freezer: Best for plug-in temperature control

8.2/10Our score

• Heating and cooling control
• Dual relay output
• 2.4 GHz Wi-Fi
• 1100W at 110V maximum output

The Inkbird ITC308 is a plug-in temperature controller, not a conventional wall thermostat for central HVAC wiring. Its dual relay output can connect heating and cooling devices at the same time, with a probe and app monitoring.

See it on Amazon

Pros

• Plug-and-play format
• Heating and cooling relay output
• High and low temperature alarms

Cons

• Not a standard HVAC wall thermostat
• 2.4 GHz Wi-Fi required

Inkbird WiFi Temperature Controller ITC308 is a different kind of two-stage temperature controller. It is designed for plug-in heating and cooling equipment, such as a refrigerator, heater or home-brewing setup, rather than a conventional central HVAC wall thermostat.

Its dual relay output can connect a heating device and a cooling device at the same time. A temperature probe measures the controlled space, while high and low temperature alarms provide alerts when the set limits are reached.

The controller works with the InkbirdSmart app on Android and iOS and requires a 2.4 GHz Wi-Fi router. It supports Celsius or Fahrenheit readings and temperature calibration.

The maximum output is 1100W at 110V. The package includes the temperature controller and probe, and the unit measures 6.7 x 2.6 x 1.2 in.

Choose it only when you need plug-in heating and cooling control. It is not a replacement for a wired HVAC thermostat with conventional stage terminals.

How do you choose a two stage WiFi thermostat?

Choose a two-stage thermostat by matching the equipment first, then compare the smart features you will use. A thermostat that offers Wi-Fi but lacks the correct stage terminals can prevent the system from operating as intended.

Check the stage count and terminal labels

Look for the equipment's wiring diagram or the labels behind the old thermostat. Two-stage systems often use separate terminals for the second heat or cooling stage, but labels vary by system type.

The Honeywell TH8321WF1001 is the clearest match in this group for up to 3 heat and 2 cool stages. The Pro1 T855iSH describes even more configurations, but its published stage details should be confirmed before installation.

Start by checking what your current thermostat can already control. If your old unit never used a second stage terminal, your system may be single stage despite what the equipment name suggests.

The wiring diagram at the furnace or air handler is a useful second source. It can show which stages the equipment supports and which terminals should be present at the wall.

Labels matter because systems do not always follow the same naming pattern. A letter that means one thing on a conventional furnace may mean something different on a heat pump.

Compatibility tools from the manufacturer can help confirm the match before you remove anything. Use the tool for the exact model you plan to buy, not a similar model from the same brand.

Power needs should be checked at the same time as stage count. Some models work without a common wire in most homes, while others require one or offer a separate kit.

Touchscreen size and control style are personal choices once the technical fit is clear. Voice support and smart home links add convenience, but they should not override a mismatch in stages or wiring.

For a broader explanation, read What Is a Stage in a Thermostat? The Homeowner’s Guide.

When two models both pass the compatibility check, compare the daily experience and how often you will change the schedule.

Confirm C-wire and voltage needs

A C wire supplies power for many connected thermostats. Vine requires one, Riseem requires one, and ecobee offers a Power Extender Kit for some homes without one.

Google Nest is designed to work without a C wire in most homes, but Google notes exceptions for certain heating-only, cooling-only, zone-controlled and heat pump systems. Never assume a no-C-wire installation will work without checking the system.

Match the thermostat to heat pumps and boilers

Heat pumps can use different terminals and auxiliary heat controls than conventional furnaces. If your home uses a heat pump, compare the options in our guide to the best smart thermostat for heat pump.

Boilers also need careful compatibility checks. Our guide to the best smart thermostat for boiler focuses on that equipment type.

Decide how much smart control you need

Google Nest is a strong choice for Google Home users who want scheduling, remote control and HVAC alerts. ecobee offers room sensing and broad ecosystem support, while Vine focuses on a large display and flexible programming.

If a touchscreen is your priority, compare these picks with the best wifi touchscreen thermostat. For a larger building, the best wifi thermostat for commercial buildings may be a better starting point.

How should you install and set up a two-stage WiFi thermostat?

Turn off HVAC power, photograph the old wiring, confirm terminal labels and follow the new thermostat's compatibility guide. If the wiring does not match the installation diagram, stop and ask a qualified HVAC professional for help.

After mounting the thermostat, connect the wires to the matching terminals and complete the setup in the app. Select the correct equipment type and stage count so the thermostat can call for the right output.

Test heating and cooling separately after setup. Check that the first stage starts before the second stage and that the system changes modes without unexpected fan or compressor behavior.

Keep the old thermostat's wiring photo and the installation instructions. Smart alerts can help you notice possible issues, but they do not replace a professional HVAC diagnosis.

Preparation saves time once you open the box. Gather a screwdriver, the wire labels from the package and your phone for the wiring photo and app setup.

Turning off power at the breaker protects you and the equipment while you work. Leave it off until the new thermostat is mounted and the wires are secured in place.

The wiring photo is your safety net if a wire slips loose during the swap. Keep it on your phone until the system has run through a full heating and cooling cycle.

Mount the new base level on the wall and check that it sits firmly. A loose base can make wiring harder to finish and leave gaps around the edges.

Match each wire to the terminal label shown in the guide, not to its position on the old thermostat. Terminal positions can differ between brands even when the wire colors look the same.

Tighten each wire gently and give it a light tug to confirm it is secure. A wire that is not fully seated can cause weak contact or a system that cuts out.

Complete the app setup before you restore power if the guide asks you to do so. Enter your system type, stage count and any heat pump settings exactly as shown in the instructions.

Wi-Fi setup is easiest near the router for the first connection. Once the thermostat is connected, you can move it back to the wall location if the guide places it there.

Testing one mode at a time helps you spot problems early. Start with heating, watch for the first stage to run, then allow the system to move to the second stage if demand remains.

Repeat the same check for cooling and listen for normal fan and compressor behavior. Short cycles, unusual noises or a fan that runs without heating or cooling are signs to stop and review the wiring.

Check schedule settings after the first test run. Confirm that wake, leave, return and sleep times match your routine, and keep the manual and leftover hardware in a safe place.

Which two stage WiFi thermostat should you buy?

The Google Nest Thermostat is the best two stage wifi thermostat for most buyers who want compact connected control with scheduling and remote access. Choose ecobee Smart Thermostat Essential for a touchscreen and selected staged-system support, or ecobee Premium for room sensing and indoor air information.

Choose Honeywell TH8321WF1001 when your system needs up to 3 heat and 2 cool stages. Choose Pro1 only after confirming its exact stage configuration, and avoid Riseem for two-stage equipment because it is limited to single-stage 1 heat/1 cool systems.

For most homes, the decision comes down to how you want to control the temperature each day. Google Nest suits households that want app scheduling and Google Home control without a large wall unit.

The ecobee Essential suits buyers who prefer a color touchscreen, clear controls, schedules and voice assistance. The ecobee Premium suits homes with rooms that feel too hot or too cold, since room sensing can respond to where people spend time.

Honeywell stands out when stage count is the main concern, with a large touchscreen and weekly schedule for several levels of heating or cooling. Pro1 suits advanced staged systems and light commercial settings, but its stage details need care before you plan the wiring.

Vine is worth a look if a large readable display and nightlight matter to you, but it requires a common wire. Riseem should be skipped for two-stage equipment, and Inkbird controls plug-in heating and cooling devices rather than central HVAC.

Whichever model you shortlist, run the compatibility check first. After compatibility, compare screen size, app design, voice support and how much scheduling you will actually use.

Our top 3 picks at a glance

1. 1
   Best for simple smart scheduling

   Google Nest Thermostat

   9.7/10 our score

   See it on Amazon
2. 2
   Best for affordable staged-system control

   ecobee Smart Thermostat Essential

   9.6/10 our score

   See it on Amazon
3. 3
   Best for room-by-room comfort

   ecobee Smart Thermostat Premium

   9.2/10 our score

   See it on Amazon

Frequently asked questions

What is the best two stage wifi thermostat for most homes?

The Google Nest Thermostat is the best two stage wifi thermostat for many homes because it combines Wi-Fi control, scheduling, remote access and HVAC monitoring. Confirm your wiring and equipment first, since C-wire needs vary and some systems need a compatible power accessory.

Can a WiFi thermostat control a two-stage furnace?

Yes, but the thermostat must support your furnace's stage configuration and wiring. Honeywell TH8321WF1001 and Pro1 T855iSH are the clearest stage-focused options here.

Several smart models require a compatibility check before installation, especially when the system uses a C wire, heat pump controls or auxiliary heat.

What does two-stage mean on a thermostat?

Two-stage means the HVAC system can run at a lower output first and use a higher output when more heating or cooling is needed. The thermostat must have the correct terminals and control logic for those stages.

Read our guide to [What Is a Two Stage Thermostat?

What You Need to Know](/what-is-a-two-stage-thermostat/) for the basics.

Do two-stage thermostats need a C wire?

Not always. Google Nest says its thermostat works without a C wire in most homes, while Vine requires a C wire and Riseem requires a 24V C-wire power supply.

Check the thermostat's compatibility tool and your existing wiring before removing the old thermostat.

Is a two-stage thermostat better than a single-stage thermostat?

A two-stage thermostat is the better match for HVAC equipment built with two output levels. A single-stage thermostat can be the simpler choice for single-stage equipment.

Compare the system type before choosing features, and see our best single stage wifi thermostat guide if your system has only one heat and one cool stage.