Highly social, Prairie Dogs live in large colonies called âtownsâ and in collections of families that can span hundreds of acres. A Prairie Dog town may contain 15 to 26 family groups, made up of a series of burrows with mounded entrances. Mother Prairie Dogs provide most of the care for the young.
BTU, or British thermal unit, is the industry-standard used to measure the heating efficiency of furnaces. In addition to BTU ratings, furnace manufacturers might include a Manual J Load rating and a percentage of energy efficiency.
BTU, or British thermal unit, is the industry-standard used to measure the heating efficiency of furnaces. In addition to BTU ratings, furnace manufacturers might include a Manual J Load rating and a percentage of energy efficiency.TU is a unit of measurement that measures the amount of energy required to raise the temperature of one pound of water by one degree Fahrenheit. Furnaces are measured in how many BTUs they use per hour to achieve this temperature increase.