Have you installed a heat pump?
With the rising costs of electricity and oil, people are looking for ways to save where ever they can. Installing a heat pump can reduce your heating bill down to 1/5 of what you're paying now. When you have an oil, wood or pellets boiler installed in your house the burning process causes the air to be drawn into your boiler unit then released out through the chimney causing a natural flow of air through your home. Replacing your boiler with a heat pump can cause problems with your ventilation resulting in moisture problems.
Installing an Edmonds Ventilator such as the SupaVent or TurboBeam can reestablish a flow of air through you home and improve the air quality.