The average first frost date at the Colorado Springs airport weather station is October 5. Homes along the Palmer Divide — Monument, Palmer Lake, Black Forest — typically see hard freeze conditions 2–3 weeks earlier. At 8,500+ feet in Woodland Park, it can be mid-September.
Most homeowners wait until they see the forecast to think about winterization. That’s the wrong approach. Here’s what needs to happen before that first freeze, and why timing matters.
The Core Winterization Sequence
1. Exterior Hose Bibs — Shut Off and Drain Down
This is the first and most important task. Every outdoor hose bib needs to be shut off at its interior shutoff valve and then drained. The sequence: close the interior valve, disconnect any hoses (a hose left connected traps water that will freeze back into the bib), then open the exterior bib to allow remaining water in the line to drain out. Leave the exterior handle in the open position over winter so any residual water can escape rather than freezing in the pipe.
If your home was built before the 1990s, check whether you have frost-free hose bibs or standard bibs. Standard bibs require interior shutoffs. Frost-free bibs extend back into the warm space inside the wall and drain automatically — but only if there’s no hose attached.
2. Pipe Insulation in Vulnerable Areas
In Colorado Springs, the highest-risk areas are: exposed pipes in unheated crawl spaces, pipes in exterior walls of older homes, pipes in unheated garages or utility rooms, and any supply line that runs near an exterior wall or through an uninsulated space.
Foam pipe insulation is inexpensive and installs easily on accessible pipes. For pipes in crawl spaces or areas that see sustained sub-zero temperatures, self-regulating heat tape is more reliable. We install a lot of heat tape in crawl spaces — it’s a small investment relative to the cost of a burst pipe and the water damage that follows.
3. Swamp Cooler Winterization
This is the step most Colorado Springs homeowners forget until they’re already dealing with cold weather. The correct sequence:
- Turn off the water supply to the cooler at the shutoff valve (usually in the attic or near the unit)
- Turn on the cooler to bleed remaining water from the pump and distribution lines — then turn it off
- Disconnect and remove the water line from the exterior supply
- Remove the cooler pads and clean the reservoir — don’t leave standing water to freeze and crack the pan
- Cover the unit with a proper cooler cover, not a tarp — a form-fitting cover that blocks air infiltration
- Seal the interior vent with a fitted magnetic vent cover — this prevents cold air from drafting down through the ducts all winter, which is a significant source of heat loss
4. Weather Stripping — The Most Overlooked Item
Colorado Springs’ UV intensity at 6,000+ feet degrades weather stripping faster than most homeowners expect. Foam and rubber weather stripping that looked fine last year may be cracked, compressed, or separated from the frame. Run your hand around the perimeter of exterior doors on a cold windy day — if you feel air movement, the stripping needs replacing.
Door sweeps at the bottom of exterior doors are particularly prone to failure and are often the biggest source of air infiltration. A quality door sweep costs under $20 and takes 15 minutes to install.
5. Furnace and Thermostat Check
Replace your furnace filter before the heating season starts. A clogged filter reduces airflow, increases energy cost, and can cause the heat exchanger to overheat and crack. If you have an older thermostat, this is a good time to upgrade to a programmable or smart thermostat — configured properly for Colorado’s 40°F+ daily temperature swings, it pays for itself in the first season.
Palmer Divide Enhanced Package
If you live in Monument, Palmer Lake, Black Forest, or Woodland Park, the standard checklist isn’t enough. At 7,000+ feet, temperatures drop harder and faster, snowfall is heavier, and the combination of elevation and Palmer Divide wind shear creates conditions significantly more demanding than Colorado Springs proper.
For Palmer Divide homes, additionally: inspect attic insulation (ice dam formation from radiant heat loss through the roof is common at higher elevations), add heat tape to all exposed supply lines not just the highest-risk ones, and verify your heating system has adequate capacity for the temperatures you’ll actually see up there. A heating system that’s adequate in Colorado Springs can be undersized for a Woodland Park winter.
Smart Technology for Freeze Protection
Two smart home investments are particularly valuable for Colorado Springs homeowners: a programmable thermostat configured for our temperature swings, and an AI water monitoring system like Phyn Plus or Moen Flo. The water monitoring system is especially worth considering if you travel during ski season — it monitors water pressure 24/7, detects the signature of a freezing pipe before it bursts, and automatically shuts off your main water supply if an anomaly is detected. More detail in our smart home freeze protection guide.
When to Schedule
September. Not because October is too late for most of the checklist, but because scheduling in September means you’re not competing with every other homeowner who waited until the first freeze was in the forecast. We get genuinely slammed in the two weeks before the first hard freeze every year — September appointments are easy to get, October is tight.
Written flat-rate estimate on every winterization project. We tell you exactly what we’re doing, what it costs, and when we’ll be done before we start.
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