Josh Mitchell, HVAC technician at AirConditionerLab, explains, 'The idea behind this method is simple: aluminum ...

Instead, slide pieces of foam insulation board, coated on the inner side with aluminum foil, behind each radiator. The boards will help insulate the wall against heat loss and the foil will ...

Luckily for you, an insulation expert has ... hack operates on a simple principle: aluminum foil is an excellent heat reflector. When placed behind a radiator, the foil reflects heat back ...