Best Answer: BTU is an old fahioned term British Thermal Units and was used to calculate the amount of energy required to raise the temp of a room by a degree (using Therms as a unit here too), and is uses an energy calculation rather than a straight how much air does it push sort of calculation.est Answer: BTU is an old fahioned term British Thermal Units and was used to calculate the amount of energy required to raise the temp of a room by a degree (using Therms as a unit here too), and is uses an energy calculation rather than a straight how much air does it push sort of calculation.
Buses that primarily operate service within the city, but are not limited to this area. Local bus service varies depending on the route, but many run seven days a week and nearly 24 hours a day.
SEPTA is the major transit provider for Philadelphia and its suburbs in Delaware, Montgomery, Bucks and Chester. Unlike many other large U.S. transit agencies, SEPTA is not a state agency and the majority of its board is appointed by the five Pennsylvania counties it serves.n 1983, SEPTA, along with other transit operators in Pennsylvania, ordered 1,000 Neoplan buses of various lengths. SEPTA ultimately received 450 buses from this order: 425 were 40-foot (12 m) buses (BD 8435â8584 and CD 8601â8875), which came without wheelchair lifts, and 25 35-foot (11 m) buses (BP 1301â1325).