Nest Thermostat Review

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The Nest thermostat is a smart learning thermostat that claims to help reduce energy expenditure in Irish households, but does this claim hold water?

Nest currently sell two thermostats in Ireland, the Nest Thermostat E, which just controls heating and you can install yourself, and the Nest Learning Thermostat which controls both heating and hot water. We’ll be discussing the latter thermostat in this guide.

Psst...Did Google buy Nest?Yes! Google paid 3.2 billion dollars for Nest labs (the company that makes the Nest thermostat) in 2014. Nest labs focus on developing smart devices for the home. They also have a smart fire alarm and smart security camera system, and one would assume Google bought it to expand its reach into the IoT(Internet of Things) market in the future.

The smart learning thermostat consists of two parts, the receiver which is usually connected to the boiler, and the actual thermostat (located in your room of choice.) What sets the Nest apart from other thermostats is that it uses smart technology to “learn” your routine and preferences outside of the initial timings you set for hot water and heating, within the first few days of using it in your house.

What is the IoT?The Internet of Things is where everyday objects can be connected to the internet or to other devices to make them more useful. Fitness tracker bracelets and smart thermostats are two examples of such devices.

If you're interested in finding out more about other useful household gadgets and how they can save you money, check out our top 12 electricity gadgets & energy saving devices guide.

Electric Ireland’s Nest thermostat deal

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Electric Ireland offers a package deal where if you switch to them as a new customer, you can pick up a Nest Thermostat at a sizeable discount, for just €130 (saving €119). Installation is also free, and they’ve even thrown in a Nest thermostat stand (in case you’d like your Nest on a shelf and not mounted on the wall).

How do I buy the Nest thermostat from Electric Ireland?

As mentioned above, whether you’re a new or current customer with Electric Ireland, you can arrange to purchase the Nest thermostat online at a considerable discount. What’s more, at the time of writing you could also pick up a Google home mini device (worth €59) for free along with your Nest purchase. When you are purchasing whichever product bundle you have selected, you can choose a convenient date and time for installation.

If you buy your Nest with Electric Ireland you can opt into the Nest price plan, with 5.5% off your electricity rate, or 8.5% off electricity and gas. Note that you can’t get a Nest price plan if you are a gas-only customer.

The amount you’ll pay for unit rates and standing charges is the same as if you were a new customer without opting into a Nest package. You can check out Electric Ireland’s current electricity and gas rates on our Electric Ireland page.

How long does it take to install a Nest thermostat?

The installer will then assess your home and choose the best location for your new smart thermostat. Installation should only take 20-30 minutes. The installer will then register the device and show you how to set up a Nest account and use all the Nest thermostat features.

Advantages of the Nest thermostat

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There is no denying that the Nest thermostat is an attractive beast. Round and unobtrusive, with a stainless steel finish on the outside and a black glossy simple display which you can select different colour backgrounds for, it looks more like a thermostat for an upscale spaceship.

Customers can also now choose from a range of different finishes in addition to stainless steel, such as white, black or copper finishes.

As a learning thermostat, it can control your heating and hot water and the Nest app (available on both Google Play and the Apple Store) will allow you to change your home heating settings while on the go. This is a very useful feature for unexpected changes to your routine, such as sick days, allowing you to change your heating times with one tap of your smartphone screen, to come home early to a warm house.

It has an extensive amount of features:

  • Eco mode, which allows Nest to turn off your heating when nobody is at home and thus avoid wasting money.
  • It can control radiators and hot water separately. (except for where your hot water comes from an immersion water heater).
  • Can be wall mounted to replace the existing thermostat, or sit on a shelf or near any socket.
  • Automatically “learns” the temperatures you like best when you’re at home and adjusts itself.
  • Although the main Nest account is linked with just one email address, the main account holder can grant access to others using Nest family accounts.
  • You can also password protect the heating controls, in case any little ones fancy playing with your swanky new gadget.
  • Shows you which settings are better for saving energy with a simple leaf icon.

In addition, the most recent iteration (the 3rd generation Nest Thermostat) has some pretty advanced options, one of which is called Farsight. Farsight means the thermostat will “wake up” and display information on its screen when there is motion up to 5m away from it. As to the information it displays, you can choose between a clock or the local weather forecast.


Your Nest thermostat can be taken with you if you move to a new home, although it will have to be uninstalled by a professional.

The Nest thermostat uses WiFi to connect with the app and allow you to remotely control your heating, If your WiFi stops working your Nest will continue to function as usual, but you won’t be able to access it remotely using the app.

If you lose your phone or can’t locate it, you can also access your Nest app by logging into any internet browser, or by pairing it with any Apple or Android wear products.

If there is anyone living in your home who might be adversely affected by sudden temperature changes (e.g. a newborn or elderly individual) you will definitely appreciate the Nest’s ability to regulate the temperature and avoid dangerous low or high temperatures.

The Nest Learning Thermostat can also interact with other smart devices, such as smart plugs, bulbs, security systems and cameras, ovens and fridges etc.

How does Nest know when you’re not at home?In order to enter the Eco temperature mode where the heating is turned off when nobody is at home, the Nest uses its activity sensors and users phone locations to judge when the house is empty.

Disadvantages of the Nest thermostat

Due to compatibility issues, it is not recommended to install the Nest thermostat, with:

  • Electric storage heating
  • Underfloor heating
  • Heat pumps
  • Back boilers

If you find that you are unable to install the Nest Learning Thermostat in your home because of your heating and hot water set up, you may still be able to use the Nest Thermostat E for controlling your heating only.

The Nest thermostat can only control two zones, e.g. one heated zone and hot water. So if you have three zones in your home, for example, your heating is separated into two zones of upstairs and downstairs, you will need to purchase another Nest to control the third zone.

As the Nest learns based on routine, it could be a useful money saving device for households with consistent schedules, such as families. However, it’s usefulness may be diminished if the opposite is true, and it’s installed in a rental house with many students living there and coming and going at different hours, for example.

The Nest thermostat also needs to be connected to a power supply. It does hold a charge, so if somebody accidentally unplugs it, it should still work for a while, but the battery will obviously eventually run out.

How much does Nest cost?

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To buy the Nest Learning Thermostat upfront, not including installation or as part of a package, will cost between €225 - €249.

Harvey Norman and Argos sell it at slightly cheaper (a €20 difference or less) prices than the official Nest website. Amazon UK also has some discounted units available (although they may not be delivered to Ireland and you’ll also have to take delivery fees into account).

However, If you’re not going to take advantage of Electric Ireland’s €130 deal with free installation, then we would recommend buying directly from the Nest website, as they have an option to check if it will work in your home with your current heating and hot water set-up.

You can also find an installer on the same site (remember that installation is not included in the purchase price). Prices for installation vary and tend to depend on your heating system, and can run between €60 - €100.

The Nest Thermostat E is slightly cheaper, at €219, but in our opinion not cheap enough to warrant giving up the ability to control and monitor your hot water supply.

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