There are a number of reasons why air temperatures differ from room to room:
- Obstructed or unopened air vents
- Shoddy heating system insulation
- Dirty filters that need to be replaced
- Inferior ductwork
- Incorrect system size due to home alterations
As a temporary measure or quick-fix hack, if one room is colder or hotter than the other, you should install a damping grille in the coldest room and close it by 50% — this will redirect the air to the other rooms. In winter, the opposite should be done. Install a damper grille in the hottest room and close it by 50%, then open the adjustable grille in the colder room by 100% to receive the redirected hot air.
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