Hi,

Heatwise is only avaiable in the East and Midlands area (MPAN 11 & 14) which can range from 4 to 5 registers and gives restricted 10hr off peak per day. Comfortplus (2 mtr 1 register each) is avaiable only in Scottish powers area (MPAN 18) and is a weather sensitive tariff giving you up to 14hrs off peak for storage heaters and thing on heating elements (their is different varions of the tariff i.e. comfortplus whitemeter(1 mtr 3 registers ) etc) Total Heating Total Control (1 or 2 mtrs 2 registers in total) is only avaible in Hydro's area (17 MPAN) works the same as comfortplus but only gives upto 12hrs depending on the weather and hydro only install THTC standard they no longer offer any varion like Scottish Power do. From these comparisons you really cant compare these as they work different and pricing is totally different as well.