Anybody know why my heater is so weak.55plate thanks

 

This is the forum for people who are having "forum issues", not for people who are having issues with their cars. I would suggest you look over whichever forum discusses your car and see if the problem has been addressed there. If not, post up your question and include relevant information like the model and year, engine type and size, heater type, whether it's auto temp control or manual, and what you have done to investigate and/or solve the problem so far. There are no mind readers here.