Solution 7: Room-to-Room Ventilators
Here’s an economical approach to warming up a cold room: Instead of paying to generate more heat, move existing warm air from one room to another. Room-to-room ventilators circulate air from a warm room to a cold one. This is a great solution if you have a stove or fireplace that generates a lot of heat but doesn’t circulate it evenly through your house.
Through-the-wall ventilator fans use the space between stud walls to move warm (or cool) air from one room to another. The Aireshare ventilator (shown) uses an intake blower that draws air into an open stud cavity and a diffuser that mounts either high or low on the opposite side of the wall to distribute the air. There’s also a level-to-level Aireshare ventilator that moves air between floors.
Ventilator fans can be installed with simple hand tools within any unobstructed interior wall. Most come in two versions: a plug-in type with the power switch on the unit itself and a hard-wired type controlled by a wall switch or thermostat. These fans can also move cool air through the living space during the warmer months; they range from $50 to $200 depending on the model.
Before You Buy a Heater
First ask yourself this: Has the room always been cold? If the answer is no, something has probably gone wrong with your heating system. Troubleshoot furnace problems. If you can’t solve the problem yourself, it’s time to call in a pro. If the answer to the question is yes, check that your ductwork, windows and walls are properly sealed and insulated. Get information about installing insulation.