Best Thermostats

Review & Comparison, Last Update October 25, 2018
We all have to cope with the problem of maintaining the comfort in our houses. Modern utility and HVAC systems make it possible by keeping the desired temperature and humidity level indoors but these systems are not intelligent enough to perform it themselves. Thus, we present you the guide in choosing a digital thermostat, the device for controlling the HVAC systems operation, for your house or office. We' ve selected the best 5 thermostat models available for online-purchasing, including the wireless and smart thermostats, to help you make an optimal choice. ...Read more ...Read less
BEST 2018
PROS
CONS
OUR VERDICT
Control type
HVAC compatibility
Power supply
Display type
Programming type
Warranty
 
PROS

You can program the bright customizable full-color screen to match the surrounding décor. The Intelligent Alert system is highly customizable as well. The Vacation Hold and Holiday/Event modes will allow you to suspend the schedule while you're away on a holiday or set a specific schedule for this period of time.

CONS

You'll have to spend some time to figure out the model's numerous functions. 

OUR VERDICT

The Honeywell RTH9585WF1004/W is one of the most attractive options on the market today. The sheer number of features is impressive in its own right but it is their execution that allows this product to take the room-temperature cake.

detailed parameters
Control type

Remote: via a Wi-Fi connection, from the iOS and Android-based mobile devices (through the Honeywell app)

Manual: via the touchscreen menu

HVAC compatibility

24 VAC-powered systems such as forced air, hydronic, cooling systems, heat pump, oil, gas, and electric

Power supply

Wired from the c-wire 

Display type

Large rectangular full-color display, bright and customizable screen with the ability to match with the surrounding décor 

Programming type

Preset energy-saving schedules, adjustable program schedules, overriding schedules - home, overriding schedules - business

Warranty

1 year (limited)

PROS

The device will allow you to program a schedule for each day of the week. As it receives convenient weather updates, figuring out that schedule will be particularly easy. The app changes the color of its background to let you know at a single glance whether your home system is heating or cooling.

CONS

The voice control feature isn't always reliable. 

OUR VERDICT

We would recommend the Emerson Sensi wireless thermostat to just about any customer who is looking to get as many convenient features as possible for the most reasonable price. Plus, the model's sleek, minimalist design will look great on any wall.

detailed parameters
Control type

Smartphone or tablet using the free Sensi app for Android and iOS devices

Works with Amazon Alexa, Apple HomeKit (c-wire required), Google assistant, and wink smarthome platforms

HVAC compatibility

Heat Only and Cool Only systems; Conventional - up to two stages of heating and two stages of cooling (2H/2C); Heat pump systems without auxiliary, up to 4 stages of heating and two stages of cooling(4H/2C); Gas, oil, electric, geothermal, radiant heat systems

Power supply

2 AA batteries (included)

Display type

Large backlit display

Programming type

7-day flexible scheduling

Warranty

5 years (limited)

PROS

You won't have to reconfigure the settings in the events of power failure or Internet connection loss. The moment it gets back online, the thermostat will continue with the usual schedule without requiring any interference on your part. The SMART Response will ensure the desired temperature at the set time. 

CONS

Connecting to Wi-Fi can be a difficult and tedious process. 

OUR VERDICT

The Honeywell RTH6580WF will be a good fit for anyone who wants to have as much control over the environment in their household as possible. It occupies that perfect middle ground for people who would like to receive the advantages of high-tech devices but don't feel like paying the seldom reasonable price.

detailed parameters
Control type

Remote: via a Wi-Fi connection, from the iOS and Android-based mobile devices (through the Honeywell app)

Manual: via 7 mechanical push-buttons

HVAC compatibility

24 VAC-powered systems such as forced air, hydronic, cooling systems, heat pump, oil, gas, and electric

Power supply

Wired from the c-wire

Display type

Rectangular monochrome backlit display

Programming type

7-day programming with 4 program periods per day

Warranty

1 year (limited)

PROS

The model works with 2-wire hot water systems and millivolt systems. It is also compatible with heat pumps that work without auxiliary/backup heat. The Copy and Paste feature will allow you to quickly and easily set up a schedule for the entire week without wasting too much of your time. 

CONS

The batteries aren't included in the package. 

OUR VERDICT

The Orbit 83521 makes the often complicated interactions between the cooling/heating systems and the thermostat simple and straightforward. The model looks good and it doesn't disappoint in any other important area. Plus, it streamlines the whole programming process.

detailed parameters
Control type

Manual only: via 5 mechanical push-buttons and 2 slide switches

HVAC compatibility

Gas, oil, or electric furnaces, Central air conditioners, 2-wire hot water systems, millivolt systems, central heating and cooling systems, heat pumps without auxiliary/backup heat

Power supply

3 AAA batteries (sold separately)

Display type

Rectangular monochrome backlit display

Programming type

7-day programming with 4 program periods per day

Warranty

3 years

PROS

Great simplicity of use and high reliability of operation. The control and programming are very intuitive. 

CONS

No wireless control and programming features, comparatively small display. 

OUR VERDICT

Perfect option for the users, who need the basic thermostat functionality only. Lack of advanced features is balanced by the device's reliability. 

detailed parameters
Control type

Manual only: via 2 mechanical push-buttons and 2 slide switches

HVAC compatibility
24 VAC-powered single-stage heating and cooling systems, 750 mV heating systems
Power supply
Combined: c-wire or battery(included), or both
Display type
A rectangular monochrome backlit display (two double-digit values)
Programming type
Non-programmable: current temperature setting only
Warranty

1 year (limited)

Honeywell RTH9585WF1004/W

Stands Out or Blends In

The Honeywell RTH9585WF1004/W is one of those electronic thermostats that really takes advantage of just about every advancement in its field, essentially putting the "smart" in "smart thermostat". What you get out of it is nothing short of impressive on just about every level.

But despite the numerous control functions (the bulk of which we will cover in a moment), the thing we like most about it is the display. The whole thing adds up to precisely 3.5 x 4.5 x 0.88 inches in overall dimensions, so it isn't necessarily the smallest option on the market right now.

That being said, the relatively large size is in no way a disadvantage. It has that high-tech, sleek appeal that really blends well with a contemporary or modern home. The silver framing gives it a sharp and professional look. And if you don't like the default background of the model's menu, you can program the bright customizable screen to match the surrounding décor, so it won't stand out if you don't want it to.

The said numerous control functions is really the only downside of this product. Well, it isn't a downside per se, but you'll probably have to spend some time figuring out the settings, even if you have plenty of experience with these things. Once you do figure them out though, there's a lot that you'll be able to do with this remote control thermostat.

Review of Honeywell RTH9585WF1004/W Wi-Fi Smart Programmable Thermostat

Pretty Intelligent

Now, as for those features, in no particular order, we would like to start with the Smart Response technology. What's great about it is that, in addition to the usual 7-day temperature programming, you can rely on this technology to learn your heating and cooling cycles and deliver the ideal temperature at the right time based on those cycles.

The Intelligent Alert system also deserves some recognition. You can program it to receive alerts and automatic updates via email. It will send you air filter change reminders and humidifier pad replacement reminders. You can set the system to receive temperature warnings or to notify you about the changes in the Internet connection status.

The thermostat automatically updates to daylight savings time. It will display the daily weather forecast on your screen. While the Honeywell app will give you a 5-day weather forecast, so you'll be able to change the thermostat settings beforehand.

There are plenty of other interesting features but the last couple of things we would like to mention are the Vacation Hold and Holiday/Event modes. Using these features, you'll be able to suspend the schedule while you're away on a holiday or set a specific schedule for this period of time.

All things considered, the Honeywell RTH9585WF1004/W might very well be the best programmable thermostat on the market today. The number of features is impressive in its own right but it is their execution that allows this product to take the room-temperature cake.

Honeywell RTH9585WF1004/W Wi-Fi Smart Programmable Thermostat in the use

Additional Info

User Manual     Manufacturer


 

Emerson Thermostats Sensi (ST55)

Plenty of Functions in a Simple Package

Emerson Sensi is the perfect example of how something so simple-looking can offer just about anything you would want out of a wireless thermostat. Simply download the Sensi app and you will have access to a rich number of features that the model comes equipped with.

The said features include the ability to remotely control the temperature in your home. They also include the geofencing technology. As some of you may know, the aforementioned technology identifies the location of your smartphone and adjusts the temperature according to that location.

People lead all kinds of lives, which is why it's a good thing that this product comes equipped with the sort of technologies that will allow you to program a schedule for each day of the week. And since the model receives convenient weather updates, figuring out that schedule will be particularly easy.

Review of Emerson Thermostats Sensi (ST55) Wi-Fi Thermostat for Smart Home

A Lot to go On

The app's interface is another example of how something so simple can be so effective. For instance, the app changes the color of its background to let you know at a single glance whether your home system is heating or cooling. It also sends you alerts whenever the wireless thermostat detects inconvenient or extreme changes in temperature or humidity.

Finally, the app automatically adjusts between the cooling and the heating mode in order to keep the user as comfortable as possible. It's HVAC compatibility coverage is superb. On top of it, the model's also compatible with iPhone, iPad, any Android device, Amazon Alexa, Apple HomeKit (the c-wire is required), Google assistant and wink smart home platforms.

All in all, we would recommend the Emerson Sensi wireless thermostat to just about any customer who is looking to get as many convenient features as possible for the most affordable price. Plus, the model's sleek, minimalist design will look great on any wall.

Emerson Thermostats Sensi (ST55) Wi-Fi Thermostat for Smart Home in the use

 

Honeywell RTH6580WF

Enough Features to Go Around

Honeywell develops a variety of different household solutions. A lot of people tend to associate their products with some of the more expensive segments of the market. But they do produce a number of budget-friendly options too. On that note, we would like to talk about Honeywell RTH6580WF.

If we had to sum up this model in one sentence, we'd say that it occupies that perfect middle ground for people who would like to receive the advantages of high-tech devices but don't feel like paying the seldom reasonable price.

To start things off, the model comes equipped with a large backlit LCD screen. The values are easy to read and the interface is straightforward enough. The model packs a decent number of features but you should be able to easily make manual adjustments.

Of course, this is a Honeywell thermostat, so you'll also be able to pair it with the Total Connect Comfort application and control the device remotely via your smartphone or tablet. The app will provide you with cooling and heating schedules and settings, with the ability to easily adjust and change both of them.

Of course, it will also display the temperature and give you the option to control that temperature. A 5-day weather forecast will help you with the latter. Not the most popular function but the Honeywell application will also grant you access to multiple smart thermostats. Finally, you can set the program to send you low- and high-temperature alerts.

Review of Honeywell RTH6580WF Wi-Fi 7-Day Programmable Thermostat

Control the Environment

With app out of the way, we reckon it wouldn't hurt to talk about some of the more basic and general features and characteristics of this model. The one seemingly small thing that we really like is the real-time clock. This clock keeps track of the time and date, so it automatically adjusts to the daylight savings time.

Plus, you won't have to reconfigure the settings in the events of power failure or Internet connection loss. The moment it gets back online, the thermostat will continue with the usual schedule without requiring any interference on your part.

But the most noteworthy feature is probably the so-called SMART Response. In short, this function enables the thermostat to predict the amount of time your heating or cooling system takes to reach the programmed temperature settings. That means you won't have to waste your time calculating whether the system will be able to reach the temperature in time as the feature will do it for you, ensuring the desired at the time you set.

In conclusion, the Honeywell RTH6580WF will prove to be a good fit for anyone who would like to have as much control over the environment in their household as possible but without paying an exorbitant price.

Honeywell RTH6580WF Wi-Fi 7-Day Programmable Thermostat in the use

Additional Info

User Manual     Manufacturer


 

Orbit 83521

Meshes With the Surroundings

The Orbit 83521 is, for the most part, one of the more basic models. Though we can't say that we were disappointed with its functionality, you won't really find here an array of next-gen features here that some people have come to expect out of programmable thermostats.

But it isn't like the product has nothing to feature to some of the more demanding customers. Sure, you won't be able to control the device via your smartphone. It doesn't support any application, so manual control is your only option. But the 5 mechanical push-buttons are intuitive enough, with Set, Run, and Hold reserved for the usual functions and a couple of up and down arrows to the right of the thermostat for menu navigation.

The menu itself is nothing to write home about. It doesn't bring anything new to the table but neither is it too complicated or convoluted, so anyone will be able to make sense of it without wasting a lot of time with the manual.

Though we can't say the same about the design of this thermostat. It looks sleek and sharp, attractive yet subtle, incorporating the sort of appearance that meshes quite well with any contemporary décor. The display is bright enough and the warm backlight will allow you to view the values and settings across an entire room.

Review of Orbit 83521 Clear Comfort Programmable Thermostat

Any Heating or Cooling System

One thing that we can definitely say about this model is that it absolutely does not disappoint as far as compatibility is concerned. The model works perfectly fine with the standard gas, oil, and electric furnaces. It is compatible with central air conditioners. You can pair the thermostat with 2-wire hot water systems or millivolt systems and have full control over them.

Of course, just like any other similar device, the Orbit 83521 works with the absolute majority of central heating and cooling systems. But it is also compatible with heat pumps that work without auxiliary/backup heat, which isn't something we can say about the majority of the model's competition.

On the functionality front, the device in question incorporates enough features to go around. Naturally, there's the usual 7-day programming setting that comes with 4 program periods a day.

There's also the so-called Early Start mode, the mode that makes sure that the temperature you want will be reached by the time that you've set. Using this mode, you'll be able to create and maintain a comfortable environment in your home, regardless of your definition of comfortable.

One last thing before we conclude the review is the model's seemingly basic but surprisingly unique Copy and Paste feature. The feature streamlines programming as you won't have to waste your time setting the same schedule for each day of the week.

In other words, the Orbit 83521 makes the often complicated interactions between the cooling/heating systems and the thermostat simple and straightforward. The model looks good and it doesn't disappoint in any other important area.

Orbit 83521 Clear Comfort Programmable Thermostat in the use

Additional Info

User Manual     Manufacturer


 

Honeywell TH3110D1008

Control type

This Honeywell thermostat is rendered in minimalistic design and is equipped with two easy-to-use slide switches and two push-buttons for adjusting the values of configuration. The slide switches are used for shifting between the cooling and heating operation modes as well as shutting the controlled system off. A small monochrome screen, that this thermostat is equipped with, has a backlight feature and it displays the current temperature along with the user-set temperature. The device supports manual operation only.
Review of Honeywell TH3110D1008 Digital Thermostat

HVAC Compatibility and Power Supply

This Pro thermostat model is designed to maintain a digital control of 24 VAC-powered single-stage heating and cooling systems (gas, oil, or electric heat with air conditioning, high-efficiency furnaces, heat pumps), as well as of 750 mV heating systems. This non-programmable thermostat can draw the power for its operation from a common wire or the battery included. The user can also opt for energizing the device from a common wire with battery backup.
Honeywell TH3110D1008 Digital Thermostat in the use

Programming type

Being the best thermostat for those, who do not want to bother with the programming this digital thermostat is of non-programmable type and enables the user to configure only the main parameter – current temperature with neither scheduling nor variations. Despite its Spartan interface, the thermostat is able to continuously maintain the desired temperature with very high accuracy [±1 F (±0.5 C)].
Detailed review of Honeywell TH3110D1008 Digital Thermostat

VIDEO
Programming Honeywell Pro 3000 Thermostat
 

What Is a Thermostat?

A room thermostat is ideal for fine adjustment of indoor climate. The principle of thermostat operation is very simple: you set the desired indoor air temperature and the controller turns the HVAC or heat pump system equipment on. The equipment keeps running until the indoor temperature reaches the value set. Thus, when the indoor air temperature drops below the set value, the thermostat automatically turns on the heating system. It can also work the other way: when the room air temperature exceeds the preset value the thermostat activates the cooling system, so the indoor air temperature is kept at a comfortable level in summer.

If you are looking for a device that provides local heating of small enclosures you should see our space heaters review.

What Features to Compare

When purchasing a thermostat device, first of all, one should pay attention to such important device parameter as thermostat Control type. It is this feature that makes it possible to characterize the approach to thermostat's temperature control and, most importantly, ease of use and apprehensibility of the device operation. By control type, the thermostats can be divided into the ones with a manual and the ones with an automatic control. With that the home thermostats furnished with analog control, which is implemented via either dials or mechanical buttons accompanied by simple indicators or LEDs, are controlled manually. Electronic or digital thermostat control in its turn implies the availability of menu buttons (sensor or mechanical) and a display (touchscreen) for critical information output.  In addition the electronic type of thermostat control opens the wide possibilities of digital thermostat remote control: you can easily control your home thermostat via an internet Wi-Fi connection from literally any location using a PC, laptop or a smartphone. This clearly shows the advantage of the electronic control type over the analog one.

Having determined the thermostat control type, you should pay attention to such an important feature as HVAC compatibility and power supply. Information about HVAC compatibility and power supply gives you an idea of what house systems you will be able to control with a specific thermostat. Modern thermostats are designed to control the wide variety of utilities, such as heating, cooling systems, including gas, electric, forced air supply systems of low and high-voltage type. These systems are controlled by high or low voltage power, thus, the compatibility with low-voltage or high-voltage HVAC systems determines the device applicability to the HVAC equipment installed in your house.

The third consumer-wise important feature concerning the digital thermostats is the Programming type. By programming type, the thermostats can be divided into non-programmable, user-programmable and self-programmable devices. Non-programmable thermostats have very few configurable parameters such as indoor air temperature or water supply temperature. The user sets the value of such a parameter and the thermostat maintains the temperature value set by operating HVAC equipment regardless of the date, time, and season. User-programmable thermostats are more flexible in operation. Digital thermostats also can be self-programmable: they can automatically adjust and reconfigure the values of parameters controlled based on the data, acquired from the external sensors, i.e. auto-adjust the desired temperature considering the season.

 

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