CASTRADS – Stockport, Greater Manchester
The Heritage: A family business founded in 2006, Castrads has successfully revived the art of the British cast iron radiator. They operate from a dedicated manufacturing hub in North Reddish, Stockport, where they design, cast and finish their units. They are, to our knowledge, the only UK business currently investing in new casting technology to advance the efficiency of cast iron heating.
The Verdict: An absolute benchmark for circular heating. Cast iron radiators are theoretically infinite-life products; they are 100% recyclable and possess high thermal mass, meaning they continue to radiate heat long after the boiler has switched off, making them ideal for modern low-temperature heat pump systems. Castrads is powered by 100% renewable electricity at their HQ, with 30% generated by on-site solar panels. Crucially, they have brought the manufacture of many internal components back to England’s industrial heartland, to ensure a transparent, low-mileage supply chain.
Core Products: Custom-built cast iron radiators (Emmeline and Mercury ranges).
