Yes, but you don't need to contact the boiler manufacturer or the gas engineer to know which delta to purchase your radiator by, because we've broken it down into 3 easy groups:

• Delta T (Δ) 70: Gas boilers installed before 2005 / Oil boilers installed before 2007.
• Delta T (Δ) 50: Gas boilers installed after 2005 / Oil boilers installed after 2007.

Delta T (Δ) 30: If you have a low temperature system e.g. heat pumps.