Stop or severely limit the use of humidifiers, or adjust them to the appropriate setting.
Run a dehumidifier if needed.
Bottled gas and Paraffin heaters.
Limit plants, aquariums, and pets. If you care for a lot of plants, group them in one sunny room and avoid over watering.
Have your gas appliances checked, if you have not recently. Malfunctioning gas appliances can deliver excessive water vapour into the air along with more dangerous contaminants. Be sure you have a carbon monoxide alarm.
Store firewood outside.
Eliminate plumbing leaks.
Don’t air-dry clothes indoors e.g. dry clothes on radiators.
Keep lids on saucepans when cooking.
Open windows for a few minutes each day, particularly after steam-producing activities such as showering/bathing, laundry and cooking. Heat loss will be minimal.
Run kitchen, bathroom and other fans longer and more often.
Open blinds and drapes. Heavy window coverings restrict the flow of warm air over the interior glass surface.
Operate ceiling fans to improve air circulation.
Increase Air Temperature
Raise and maintain temperature inside the house via regular use of the home heating system.
Insulate under the seat and over the head of bay, bow and garden windows to keep window area warmer.
Direct warm-air supply ducts toward windows or use a fan for increased air circulation at windows.