Suburban home surrounded by fall foliage, ready for a winter plumbing checklist

Winterizing Your Home's Plumbing: A Fall Checklist for Preston & Cache Valley Homeowners

September 03, 2026

If you've lived in Franklin County through even one winter, you know the cold here doesn't ease in gently. One week you're at the Preston Farmers Market picking up the last of the season's squash, and the next you're scraping frost off the windshield before the sun's even up. Cache Valley winters are no joke either — Smithfield, Richmond, and North Logan all sit in that same cold-air pocket that can drop temps into the teens overnight and stay there for weeks. We've seen it dip well below zero, and Preston still holds a record low of -31°F. That kind of cold doesn't care whether your pipes are ready for it.

Every fall, we get the same round of calls once the first hard freeze hits: a burst pipe in a crawl space, a frozen hose bib that cracked the wall behind it, a water heater that finally gave out the same week the furnace kicked on. Almost all of it is preventable. A little time now, while it's still sweater weather instead of parka weather, can save you a five-figure repair bill and a very unpleasant surprise in January. Consider this your fall checklist for winterizing your home's plumbing before Cache Valley's cold really sets in.

Why Preston and Cache Valley Homes Need Extra Prep

A lot of general plumbing tips you'll find online are written for places where winter means a light frost a few nights a year. That's not us. Between the elevation, the valley effect that traps cold air, and the wind that comes off the Bear River and through Cub River Canyon, our pipes take a beating that homes in milder climates never deal with. Older homes near downtown State Street with original galvanized plumbing are especially vulnerable, and so are newer builds on the east side of Preston where basements and crawl spaces sometimes don't get quite enough attention during construction. Homes along Cub River Road, right up against the water, can also see higher ground moisture that adds its own complications in freezing weather.

The good news is that winterizing your home doesn't require a plumbing degree. It just requires knowing where the weak points usually are and getting to them before the first real cold snap.

Outdoor Plumbing: Start Here First

Outdoor fixtures are almost always the first casualty of a hard freeze, and they're the easiest thing to protect. Start by disconnecting and draining every garden hose on the property — a hose left attached to an outdoor spigot traps water in the pipe behind it, and that's exactly what splits copper and PVC when it freezes. Once the hose is off, shut off the interior valve that feeds your outdoor spigots if your home has one, and drain the line by opening the spigot until no more water comes out.

If you've got a sprinkler system for the lawn, don't skip blowing out the lines. This is one of those jobs that seems optional right up until a hidden puddle of water in a buried line freezes, expands, and cracks the pipe underground — a repair that's a lot more expensive and disruptive than the twenty minutes it takes to blow the system out properly in the fall.

Inside the House: The Checklist

Once the outside is handled, work your way through the interior. This is the part homeowners tend to rush, but it's where the real protection happens for the pipes that matter most.

  • Insulate exposed pipes in crawl spaces, garages, and unheated basements — foam pipe sleeves are cheap and take an afternoon to install.
  • Seal drafts around foundation vents, sill plates, and any spot where a pipe passes through an exterior wall; cold air finding its way to a pipe is often worse than the outdoor temperature itself.
  • Know where your main shutoff valve is and make sure it actually turns — a stuck valve does you no good in an emergency.
  • Set your thermostat to never dip below 55°F, even when you're traveling for the holidays or a weekend at the fairgrounds.
  • Let faucets drip slightly on the coldest nights, especially any fixture on an exterior wall.
  • Check your water heater for sediment buildup and rust, and flush the tank if it hasn't been done in the past year.
  • Test sump pumps and check for slow drains before winter makes any existing issue worse.

That drip trick is worth explaining a bit more, since people are often skeptical of it. Moving water is much harder to freeze than still water, so a small trickle from the faucet farthest from your main line keeps pressure from building up if a section does start to ice over. It costs you a little on the water bill. It costs you a lot more to repair a burst pipe behind drywall.

Don't Forget the Water Heater and Softener

Cold snaps put extra strain on your water heater since incoming water is colder and the unit has to work harder to bring it up to temperature. If yours is more than eight or ten years old, fall is a smart time to have it inspected rather than finding out it's failed on the coldest morning of the year. The same goes for water softeners — hard water is common throughout Cache Valley, and a softener that's not maintained can freeze or malfunction just like any other plumbing fixture when temperatures drop and usage patterns change over the holidays.

What About Homes With Radiant Heating?

If your home has radiant floor heating, fall is the time to have the system checked before you're relying on it daily. A small leak or air pocket in a radiant loop is a minor annoying fix in September. That same issue in the middle of a January cold snap, when you actually need the heat working and the ground outside is frozen solid, is a much bigger headache. Have the boiler or water heater serving the system inspected, check for any warm spots or cold spots on your floors that might indicate a problem, and make sure the whole system is bled and pressurized correctly before you need it around the clock.

A Quick Word on Timing

We get it — fall in Franklin County is genuinely busy. Between the Franklin County Fair, football season, and getting the yard ready before the Festival of Lights goes up downtown, plumbing maintenance can slip pretty far down the list. But the window between "still comfortable outside" and "first hard freeze" tends to close faster here than people expect. One year it's shorts weather at Preston City Park in early October, and two weeks later there's frost on the pumpkins. Aim to have your home winterized by mid-to-late October if you can, before the forecast turns.

We're Happy to Help

Winterizing a home's plumbing isn't complicated, but it's easy to miss something when you're juggling everything else that comes with fall. If you'd rather have a second set of eyes on your pipes, water heater, or radiant system before the cold really settles in over Preston or the surrounding Cache Valley communities, we'd be glad to come take a look. Reach out to Don Mac Plumbing to schedule a fall inspection, and let's get your home ready before winter decides the timeline for you.

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