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Extended Warranty Included on Selected Models
A number of heaters in the range ship with a longer-than-standard manufacturer warranty at no additional charge. Check the warranty section on each product page to see which models qualify. The extra cover is registered automatically when you buy - no separate form to fill in.
Spread the Cost with Interest-Free Finance
Orders over a certain threshold can be split into monthly instalments with zero interest. Select the finance option during checkout, complete a quick eligibility check, and you'll see your monthly payment amount before confirming. Useful if you're buying multiple heaters for a whole property.
Flash Sales Posted on Social Media
Castle Heaters runs short-lived promotions on their Facebook and Instagram channels that don't appear anywhere else on the site. These typically last 24 to 48 hours and cover specific heater models or brands. Follow their pages and turn on notifications so you don't miss the next one.
Refer a Friend and You Both Get Money Off
Share your unique referral link from your account dashboard. When someone you invite completes their first purchase, they receive a welcome discount and you earn credit toward your next order. There's no cap on how many friends you can refer.
Save When You Bundle a Heater with Accessories
Pairing a heater with a compatible thermostat, controller or mounting bracket works out cheaper than buying each piece individually. Look for the bundle badge on product pages - the combined price is already reduced, so there's nothing extra to enter at checkout.
Trade Account Pricing for Installers
Plumbers, heating engineers and trade professionals qualify for special trade rates. Set up a trade account on the Castle Heaters website with your business details and proof of trade status. Once approved, trade pricing appears automatically when you log in - ideal for fitting multiple units on a job.
Student Discount on All Heaters
Verified students can unlock a reduced price across the full range. Register through a recognised student discount platform using your university email, then apply your student status at checkout. Works on everything from portable radiators to wall-mounted panel heaters.
Price Match Promise - We Won't Be Beaten on Price
Spotted the same heater cheaper at another UK retailer? Castle Heaters will match that price. Get in touch with their team before placing your order and provide a link or screenshot of the competitor listing. They'll adjust your total so you never pay over the odds.
Buy 2 Get 5% Off or Buy 3 Get 10% Off
Multi-buy savings on selected products - buy 2 items for 5% off or buy 3 items for 10% off. Discount applied at checkout.
Free Next Day Delivery on All Products
Order before 12pm for free next day delivery on all products. UK mainland only. Shop heaters and appliances today.
Discover current promotions at Castle Heaters
Castle Heaters offers a range of products and services. Visit their website for current deals.
