Switch now & claim your £100 welcome bonus*
Call us today on 0800 2300363 or fill in the form below and we’ll contact you to complete your switch to firmus
Switch to firmus energy
gas & enjoy a £100
welcome bonus*
Join thousands of customers across Northern Ireland enjoying firmus energy natural gas and get a £100 welcome bonus*.
Why choose
firmus energy?
£100 Welcome Bonus* - Get rewarded when you switch
Hassle-Free Switching - We handle the process for you
No Interruption to Your Supply - Just great service & a smooth switch
Trusted by Thousands - Heating homes across Northern Ireland
Friendly, Reliable Service - Contact us by phone or email, 5 days a week
Welcome Bonus is available for new customers only and is subject to a 12-month contract. Welcome Bonus signifies a rebate offered by us the company to you the customer. If you avail of the rebate you are deemed to have accepted the terms and conditions and any rebate availed of by you may be withdrawn by the company if you terminate your agreement within the Initial Period. Download the full welcome bonus terms and conditions here.