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Homeowner draining an outdoor faucet to winterize plumbing in Colorado in fall

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Fall Plumbing Checklist Before the First Colorado Freeze

The cheapest plumbing emergency is the one you prevent. Work through this fall checklist before the first hard Colorado freeze.

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Published September 7, 2026 · 6 min read · By Parker Plumbing Pros

The most affordable plumbing emergency is the one that never happens. A little fall preparation dramatically cuts your odds of a frozen pipe, a burst line, or a dead water heater when the first hard Colorado freeze rolls in. Here's the checklist we give Front Range homeowners.

Outdoor faucets and hoses

  • Disconnect, drain, and store garden hoses before the first freeze.
  • Shut off and drain the supply to outdoor hose bibs where possible.
  • Install insulated covers on exposed hose bibs.
  • If you have a sprinkler system, have it blown out and winterized.

Find and label your main shutoff

Before winter, locate and clearly label your main water shutoff. If a pipe does burst mid-freeze, knowing exactly where to shut off the water — without a frantic search — is the single most valuable thing you can do to limit damage.

Protect exposed and vulnerable pipes

  • Insulate exposed pipes in garages, crawlspaces, and along exterior walls.
  • Add heat cable to lines that have frozen before or run through cold spaces.
  • Seal drafts and gaps near pipes in unheated areas.
  • For higher, colder areas like Monument and the Palmer Divide, be extra thorough — the freeze is more severe.

Service your water heater

Fall is the ideal time to flush your water heater and clear the hard-water sediment that's built up over the year. A flushed tank runs more efficiently and is less likely to fail during the heavy-demand winter months. If yours is 10+ years old and struggling, it's better to address it now than during a January cold snap.

Check drains before the holidays

Winter is peak season for kitchen drains, thanks to holiday cooking and grease. If a drain has been slow, clear it now rather than during a house full of guests. Never pour grease down the drain — it's the number-one cause of holiday kitchen clogs.

Vacation and second homes

If you'll leave a home empty for stretches this winter, don't let the interior drop toward freezing. Keep the heat on at a safe minimum, or have the system properly winterized and drained. A cold, empty home is the classic frozen-and-burst scenario, especially in the mountains and higher elevations.

Consider a fall inspection

If you're not sure your exposed lines are protected, a fall plumbing inspection catches vulnerable pipes before they freeze. It's a fraction of the cost of a burst-pipe repair and the water damage that comes with it.

Serving Parker, Monument, and the Front Range, we winterize outdoor plumbing, flush water heaters, and freeze-proof vulnerable lines. Book a fall check-up before the first hard freeze — call us.

The two fall tasks almost everyone skips

Most homeowners remember to bring in the hoses. The two tasks that actually prevent the expensive winter calls are the ones people skip. First, the sprinkler blow-out: water left in irrigation lines and the backflow assembly freezes, expands, and cracks them — a spring surprise that a proper compressed-air blow-out prevents entirely. Second, the water-heater flush: draining a year of hard-water sediment before the heavy-demand winter months keeps the unit efficient and less likely to fail on the coldest week of the year, exactly when you least want a cold shower.

Neither task is glamorous, and neither shows an immediate payoff, which is why they get skipped. But the freeze-cracked backflow and the mid-January water-heater failure are two of the most common — and most preventable — calls we get. Twenty minutes in October beats an emergency in a snowstorm.

Frequently asked questions

Before the first hard freeze — typically early-to-mid fall along the Front Range, and earlier at higher elevations. It's better to be a few weeks early than a day late.

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