Baskadia

Put aluminum foil behind the radiators.

Radiators attached to external walls can often result in heat being lost through these walls. One clever way to battle this is by applying aluminum foil behind the radiators so the heat is being pushed back to your room. You can use the foil you have in your kitchen only if it is of very good quality. If not, you can buy a foil specially made for this purpose for under $10.