How to Winterize House Plumbing in Windsor, CO

What winterizing your plumbing actually means

Winterizing means getting water out of — or protecting — every line that can freeze. For a home you're living in, that's mostly the exterior plumbing and exposed runs: hose bibs, garage and crawl-space lines, pipes in exterior walls. For a vacant, rental or snowbird home, it's a full drain-down of the entire system, because an unheated house will eventually match the outdoor temperature.

The Windsor winterization checklist

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  Disconnect all garden hoses and store them — a connected hose traps water in the bib and splits it from the inside.
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  Shut the interior valve to each hose bib, open the outside faucet to drain it, and leave it open for the winter.
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  Insulate exposed pipes in the garage, crawl space, basement rim and exterior walls with foam sleeves or heat tape where a pro recommends it.
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  Seal gaps and cracks around pipes where they pass through exterior walls — wind-driven cold air is a freeze accelerator.
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  Drain and cover the sprinkler backflow preventer, and schedule the irrigation blowout with your irrigation company.
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  Test your main shut-off valve: turn it off and on once. A valve that won't close in October won't close during a January burst either.
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  Check the sump pump by pouring in a bucket of water — spring snowmelt is coming, and a dead pump found now is a cheap fix.
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  If you'll travel, set the water heater to its vacation setting and pick your plan: heat at 55°F with check-ins, or a full drain-down.

Winterizing a vacant house without heat

A house sitting empty through a Windsor winter needs the full treatment. Shut off the water at the main and open every faucet, starting upstairs, to drain the system from its lowest point. Drain the water heater completely and switch it off — gas control to off, or the breaker for an electric unit — and never energize an empty tank, which destroys elements in minutes.

Flush the toilets to empty the tanks, sponge out what remains, and add non-toxic plumbing antifreeze (propylene glycol, made for this purpose) to every drain trap and toilet bowl so the traps don't freeze and crack. Leave faucets open while you're away. One rule that matters: antifreeze belongs in drains and traps only — never in supply lines you drink from.

How to winterize pipes outside

Outdoor plumbing lives outside your insulation, so it gets its own pass. Exterior faucets get drained and covered. Irrigation supply lines are shallow and hold water all winter unless blown out with compressed air — a job most homeowners hand to their irrigation company, worth coordinating with the plumbing visit. Standpipes, yard hydrants and any outbuilding lines in barns or detached garages need draining or shut-off plus insulation, and they're routinely the first freeze victims in Severance, Eaton and Ault properties with acreage.

What a plumber does on a winterization visit

A professional winterization visit works the same checklist with better eyes: the plumber drains and protects hose bibs and vulnerable runs, insulates where it counts, checks the water heater and sump pump, tests shut-offs, and flags the weak spots you'd never notice — the uninsulated elbow behind the garage wall, the valve that's already weeping. For a vacant home it's the full drain-down, done in the right order so nothing is missed. If you'd rather hand the whole thing over, that's exactly what our Winterization service covers — book it before the first hard freeze, not during it.

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