Preventing your household plumbing pipes from freezing requires a combination of thermal insulation and consistent temperature management. Start by wrapping all exposed water supply pipes located in unheated areas—such as basements, crawlspaces, attics, garages, and exterior walls—with foam pipe insulation sleeves or electrical heat tape. During severe sub-freezing winter weather, open kitchen and bathroom cabinet doors beneath sinks to let warm indoor air circulate around plumbing fixtures, and allow indoor faucets to drip slightly to maintain continuous water movement, which prevents ice crystal formation. Verification: Disconnect outdoor garden hoses and shut off exterior hose bib supply valves before winter freezing weather arrives.
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