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.
City Buses. The citizens area transit or CAT is the Las Vegas public transit system. The 2 routes that most Las Vegas visitors will be concerned with are the #301 and #302 which both run the Strip from the south to Fremont street. The 301 stops at every stop along the strip while the 302 is the express bus and stops at fewer locations.