We know everyone loves a bargain, right? So check out our active promo codes and discounts across our product range below, so you can feel confident you're paying the best price possible for your installation.
Boiler offers
Get a free Hive Thermostat Mini worth £268 with your new boiler, use code FREEHIVEMINI at checkout¹
Boiler offers
Bluelight Card holders can save £60 on new boiler installations
With BOXT, you can rest assured that you’re always paying the best price. In fact, we promise that if you get a like-for-like installation quote that’s cheaper than ours, we’ll beat it by £50.
With BOXT, you can rest assured that you’re always paying the best price. In fact, we promise that if you get a like-for-like installation quote that’s cheaper than ours, we’ll beat it by £50.
Air con offers
Bluelight Card holders can save £60 on air conditioning installations
Solar offers
With BOXT, for every panel you pay for, we'll give you one free
Heat pump offers
Eligible households can save £7,500 on heat pump installations, via the Boiler Upgrade Scheme
Through the Warm Homes Loan Scheme, access subsidised or extended 0% APR terms on solar, battery storage, and heat pump installations, part funded by the UK Government.
Existing customer offers
Refer a friend and they'll get £100 off their install, and you get a £100 voucher. It's win-win!
Existing customer offers
If you've bought from BOXT before, you can save £100 on your next install². Talk to our team to find out how to claim your discount.
¹FREEHIVEMINI promotion ends 7th December 2026. Click here for full Terms & Conditions. Promo cannot be combined with other promo codes.
²Terms and Conditions apply to returning customer discount. Click here to learn more.