Brookfield Volunteer Fire Company is warning that the frigid temperatures could not only cause health problems, but issues in the home.  They cautioned that if people do have to go out, be prepared and dress appropriately.  Residents are also urged to keep an eye of pipes in non-insulted walls or crawl spaces as they could freeze.  Any secondary heat sources should be kept away from combustible items in the house and outside vents should be kept clear and not frozen shut, to ensure CO or other products of combustion are able to exit.