Every fall in the Helena Valley there's a window — usually from late September through the third week of October — when winterizing your home's plumbing is easy, cheap, and unhurried. And every year, a hard freeze arrives sometime in that window and catches thousands of homeowners with hoses still attached, sprinklers still charged, and boilers that haven't run since April. The difference between a $100 afternoon of prevention and a $10,000 water damage claim is almost always timing.
This is the checklist we'd hand to any Helena homeowner. Work through it in order — the outdoor items are the most time-sensitive, since they're the first casualties of an early cold snap.
Outside the House (Do These First)
- Disconnect every garden hose from every spigot. A connected hose traps water inside the sillcock, which freezes and splits the pipe inside your wall. This single item causes more spring surprises than everything else on this list combined.
- Shut off and drain non-frost-free spigots. If your home has interior shutoff valves for the outdoor faucets, close them and open the outside spigot to drain the stub.
- Install insulated covers on all exterior spigots — the foam domes cost a few dollars and add a real margin of safety, even on frost-free models.
- Have your sprinkler system blown out with compressed air before mid-October. Simply shutting the valve leaves water in the lines and heads. In Helena's climate, an un-blown irrigation system is a spring repair bill waiting to happen.
- Drain and store hoses, and drain any yard hydrant or stock water line that has a drain-back provision.
The Basement, Crawlspace, and Garage
- Slide foam insulation sleeves over any exposed water line in an unheated or marginally heated space — crawlspaces, garages, and along basement rim joists.
- Hunt down cold air leaks near pipes: foundation vents, sill plate gaps, and penetrations where lines enter the house. A can of spray foam in October beats a pipe-thawing call in January.
- Close crawlspace vents for the season (if your crawlspace design uses seasonal vents).
- Locate your main water shutoff valve and make sure every adult in the house knows where it is and how to close it. In a burst-pipe emergency, minutes matter.
- If you have heat tape on vulnerable lines, plug it in and verify it's working — most have an indicator light. Heat tape has a service life; cracked or stiff tape should be replaced.
The Mechanical Room
- Schedule your boiler or furnace tune-up now, before the heating season rush. A fall combustion check, pressure check, and safety inspection catches most winter breakdowns while they're still cheap.
- Check your boiler's pressure gauge — it should read roughly 12 to 20 psi cold. Chronic low pressure means a leak or a failing expansion tank that should be addressed before the system works hard.
- Flush your water heater to remove the year's sediment. In Helena's hard water, this single task meaningfully extends tank life.
- Test your sump pump by pouring a bucket of water in the pit — spring melt feels far away in October, but a seized pump is easier to replace now.
- Fire your garage or shop heater once before you need it. Igniter and fan failures always announce themselves on the first cold day.
If You're Leaving for the Winter
Snowbirds and anyone leaving a Helena property vacant for weeks at a time should go further. Keep the thermostat no lower than 55 degrees, and arrange for someone to check the house every few days — some insurance policies require it for coverage to hold. For longer absences, the gold standard is a full shutdown: close the main valve, open every faucet to drain the system, flush toilets and add RV antifreeze to the traps and bowls, and shut down or vacation-mode the water heater. A freeze alarm or smart thermostat that alerts your phone when the indoor temperature drops is cheap insurance for any unoccupied home.
When to Bring Us In
Most of this checklist is honest DIY territory, and we encourage homeowners to handle it. Call us for the parts that aren't: the boiler tune-up, a water heater flush if yours has never been done (a tank with years of accumulated sediment sometimes shouldn't be disturbed without a pro on hand), heat tape installation on chronically freezing lines, and any pipe that has frozen in past winters — a pipe that froze once will freeze again until the root cause is fixed, and permanent fixes are our specialty.
A couple of hours in October is the cheapest plumbing work you'll ever do. If you'd like us to handle the mechanical side — boiler service, water heater flush, or a whole-home winterization for a vacant property — call or text and we'll get you on the fall schedule before the rush.