One Big Switch – A Review of their Latest Dual Fuel Offer.

One Big Switch has a Dual Fuel switching offer running at the moment (December 2019) .

The dual-fuel offer from OneBigSwitch is with Energia and it includes a free Netamo Smart Thermostat (Including installation) and €120 cashback.
(It looks like you can still get the discount and cashback without the Netamo installation.)


This deal works out, for average energy usage, at €1487 in year one – including the cashback.
This currently works out slightly cheaper than Energia’s best deal where it would work out at €1493 in year one but without a free Netamo.

You can see the full offer terms if you join One Big Switch with no obligation to buy anything – on the One Big switch website.

The energy provider for this offer is Energia – and with this special offer bundle, the gas unit price is discounted by 29% and electricity rates by 30%. Plus you get €120 cashback and a Netamo thermostat installed.( subject to eligibility).

(All figures based on average energy usage over 12 months)

* (You could buy the Netamo smart thermostat for £149.99 (€166) on Amazon but you will probably then need to pay someone to install it – which could cost between €100 and €200) .


There are a few eligibility conditions for getting the free Netamo thermostat installed . For example :
Your home must have been built prior to 2006.
Your current heating system must be a Single Zone heating system.

You can view the full terms on the One Big switch website.
You just have to register with your email address and county to enable you to see the full details of this offer and apply for it if you want to.


This offer was still available on December 4th 2019 but it might not be around for much longer .

You can see other prices on our page about the Best Dual Fuel Deals Here

One Big Switch also has a good offer on Electricity with Energia – if you are interested in getting a free Netamo smart thermostat. It works out at €846 for average usage over year one – including the €30 cashback. This is €17 dearer than going with the best deal from Energia – but it includes a free Netamo thermostat (installed) . Full details and eligibility terms can be seen when you register with One Big Switch

One Big Switch launched in Ireland in 2014. They work by getting large numbers of people ‘onboard’ and then use this market power to try and get good deals from suppliers of energy , broadband and insurance. (They make a commission for each customer they get.)

They started in Australia where they have around 1 million “members”. Here in Ireland, almost 179,000 people are registered with One Big Switch.

one big switch

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