Dew point is the tempurature the air cannot hold the weight of the water in it. The water then begins to condense and form droplets. This tempurature is always below or equal to the air tempurature.
Propane prices. Maine (ME) propane users spent an average of $2.724 per gallon over the 2012-2013 heating season. This is slightly higher than the 2.436 average for the country as a whole, for the reasons explained above (distance from major supply source, colder climate, higher demand).
Reputation: 671. propane is 3 times the cost of natural gas in my neck of the woods in upper township, NJ it would affect my decision on price. I myself would not buy a house that uses propane for heat. you are looking at 3 times the cost for heating say $600 a month for propane versus $200 for natural gas.