Thermo Saver

A 36 month fixed product that offers you a bit extra
a tadoo Smart Thermostat that includes free installation.

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This product is right for you

  • If you want to  save up to 31% off heating bills with the tadoº.
  • If you want to lock your electricity and gas prices for longer to help budget your household finances.
  • If you want to control your heating with your smartphone or your personal e-assistant (Alexa from Amazon).

The product is not right for you

  • If you are under 18.
  • You don't have a smartphone that supports the app.
  • You don't want to fix your bill for 36 months.

Account features:

24/7 Account Access

Rate Server

Direct Debit Discount

Dual Fuel Discount

At Green Star Energy we want to make things simple, clear and efficient.

It's 3 easy steps to apply for this product:

  • Call us - Call us on 0800 012 4510 or request a call back (Monday to Friday, 8am-6pm) and we will contact you within 1 working day.
  • Book your smart thermostat installation - An agent will take you through the application process and book your Smart Thermostat installation. Your installation appointment date will be around 21 days after you apply to allow time to switch you to Green Star Energy.
  • Go smart - An engineer will visit your home to install the Smart Thermostat and let you know how to manage your heating efficiently and save money.

You can cancel your Thermo Saver tariff before the end of your 14 day cooling off period without charge. Just call 0800 012 4510. If you cancel 14 days after the date of your order, you can switch to a different Green Star Energy tariff or to a different supplier and will be charged a cancellation fee of £80 per fuel.


Can I have a Smart Thermostat?

You can have a free tadoo Smart Thermostat if you have:

  • An individual gas or oil boiler, or a heat pump.
  • An internet connection.
  • An email address.
  • A smart phone.
  • Have selected the Thermo Saver 36 month tariff.

How do I switch to the Thermo Saver tariff?

Please contact us on 0800 012 4510 to switch to the Thermo Saver Tariff and check your eligibility. The Thermo Saver team will be avaliable from 8 am to 6 pm, Monday to Friday.

When will my Smart Thermostat will be installed?

Your tadoo wil be installed upto 21 days from the date you place the order.
For more frequently asked questions click here.

You can download a copy of our Thermo Saver tariff terms and conditions here.
Click here for our standard terms and conditions.

Call Us on 0800 012 4510 between the hours of 8 am to 6 pm Monday to Friday to book this great offer.



Green Star Energy is a trading name for Hudson Energy Supply UK Limited. Registered in England and Wales. Company number: 07489042. Registered address: Elder House 3rd Floor, 586-592 Elder Gate, Milton Keynes MK9 1LR. Full company information can be found at Companies House.