For general inquiries, HDB's key hotline is 1800-225-5432, but it operates only during weekdays from eight:00 AM to 5:00 PM. For right after-hours emergencies that involve rapid consideration, including fallen windows, wall collapse, or carry breakdowns, inhabitants must Get in touch with the 24-hour Essential Servicing Support Unit (EMSU) hotline unique to their Town Council. For example, some City Councils use the EM Products and services EMSU hotline at 1800-275-5555, while some use the ESMACO EMSU hotline at 1800-354-3333. It is important to notice that there is no one HDB 24-hour hotline for all troubles. For other crucial products and more info services, individual 24-hour hotlines exist, like SP PowerGrid for electricity offer interruptions at 1800-778-8888, PUB for water source concerns at 1800-225-5782, and Town Gasoline for gas emergencies at 1800-752-1800. These figures are essential for people to handle urgent issues beyond regular Office environment hours.