Three or four. We're a town with a winter population of 10,000, 4,000 households, primarily older stock wood frame construction - 30+ years. Temperate winters - only a week or two below freezing.
Permalink Reply by lb on January 24, 2011 at 10:51am
We usually get 5-6, yet we are automatic aide to our neighboring district and so far it has already been 6.