BOXT Discounts & Promo Codes
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.
Looking for a particular product offer? Use the links below...
Boilers
Boiler offers
Free Hive Thermostat Mini
Save up to £158/year on energy bills¹ with a Hive Thermostat. Get a Free Hive with code FREEHIVEMINI until 31/05/26
Boiler offers
Bluelight Card Discount
Bluelight Card holders can save £60 on new boiler installations
The BOXT Price Match Promise
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 Conditioning
Air con offers
Bluelight Card Discount
Bluelight Card holders can save £60 on air conditioning installations
Join our thousands of happy customers
Solar panels, Heat pumps & Battery storage
Solar offers
Buy One Panel, Get One Free
With BOXT, for every panel you pay for, we'll give you one free
Heat pump offers
Boiler Upgrade Scheme
Eligible households can save £7,500 on heat pump installations, via the Boiler Upgrade Scheme
Battery storage offers
Up to £750 rebate on Tesla Powerwall 3
Get up to £750 rebate on Tesla Powerwall 3 installations.
Existing customers
Existing customer offers
Refer a friend
Refer a friend and they'll get £100 off their install, and you get a £100 voucher. It's win-win!
Existing customer offers
Returning customer discount
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.
¹Free Hive Mini Promotion not combinable with other promo codes. Offer ends 31st May 2026. Click here for full Terms and Conditions. Saving of £158.40 based on the Ofgem medium annual gas consumption of 11,500 kWh at the April 2026 UK average unit price of 5.739 pence per kWh including VAT. Emissions saved per year: 508 kg CO2 (0.184kg per kWh). Actual savings will vary depending on individual circumstances.
²Terms and Conditions apply to returning customer discount. Click here to learn more.