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.
PATH trains run 24 hours a day and 7 days a week. The system has a route length of 13.8 miles (22.2 km), not including any route overlap. In the third quarter 2015, PATH had an average weekday ridership of 263,300. PATH trains only use tunnels in Manhattan, Hoboken and downtown Jersey City.