Cold House Solution 2: Duct-Booster Fans
A ‘register’ booster fan is much easier to install. Depending on the model, it either sits on top of or replaces a floor or wall register grille, and plugs into an outlet. A built-in thermostat switches on when the furnace operates. Register duct boosters cost $40 to $70. Many different manufacturers make duct booster fans of both types. Search online for ‘in-line duct booster fan’ or ‘register duct booster fan’ to find manufacturers and dealers.
Solution 3: Cove Heaters
Cove heaters, mounted along the ceiling, are fairly inconspicuous. For a bedroom or TV room, cove heaters can be a great choice. They operate silently (no fans) and since they’re radiant panels, they emit heat downward to warm people and objects directly instead of heating the air. Because they mount near the ceiling, they’re unobtrusive and kids can’t burn themselves. They work well in rooms where drapes and furniture make baseboard heaters inconvenient.