What requirement must be fulfilled when installing a hose bib in cold climates?

• A. It must have a built-in heater
• B. It must be frost-proof
• C. It must be insulated
• D. It must be made from brass

Answer: (B)

When installing a hose bib in cold climates, the key requirement is that it must be frost-proof. Frost-proof hose bibs are specifically designed to prevent freezing and subsequent damage that can occur when water inside the faucet or pipes freezes during cold weather. These types of hose bibs typically feature a design that allows water to drain out when the faucet is turned off, helping to keep the water in the supply line above the frost line and reducing the risk of freezing.

Other factors, like insulation, may provide additional protection but do not inherently make a hose bib frost-proof. Moreover, while using materials like brass can enhance durability and resistance to corrosion, the material alone does not guarantee that a hose bib will be suitable for cold climates. A built-in heater is not a common or necessary requirement for hose bibs, making frost-proofing the primary concern in preventing freezing issues.