Conference rooms, hotel rooms, and restaurants are usually air-conditioned. Most public transportation and car services are air-conditioned as well. There is also a post office and a bank on campus. See map of the Technion. They can be bought at post offices.
Telephone calls from hotels are usually more expensive.
The entry code for an international call is 00. The Israeli currency is the Shekel. One shekel is divided into 100 Agorot. There are no notes of 1000 Shekel. The service is often already added on the bill.