Aurora, CO · Evaporative Cooling
Evaporative Cooler Shutdown in Aurora, CO — $150 Before the First Freeze
Every October, Aurora homeowners find out the hard way that a swamp cooler is a plumbing job as much as a cooling job. The cooler itself survives winter just fine. The water line feeding it usually does not.
Why the first freeze changes the deadline
Front Range freezes rarely announce themselves. In 2026 the National Weather Service issued a Freeze Watch for Aurora on the evening of October 14, covering 12:00 AM to 9:00 AM on Friday, October 16 — the season's first freeze. That is the window when a charged supply line running through an unheated attic, a soffit, or above a ceiling reaches freezing.
Water expands when it freezes. A copper or poly line that splits at 28°F does not leak at 28°F. It leaks when it thaws. By then the water has already travelled into insulation, drywall, and occasionally framing.
What actually happens if you skip the shutdown
| What freezes | What it costs later |
|---|---|
| Supply line in attic or soffit | Split line, stained or collapsed ceiling drywall, wet insulation |
| Water in the pan | Pan corrodes from the inside out over winter; pump seizes |
| Distribution tubing | Cracked tubing, uneven cooling next June, spring repair visit |
| Leftover scale and mineral buildup | Restricted water flow, pad failure, weaker cooling all summer |
What our $150 cooler shutdown includes
- Shut off and bleed the supply line. Closing the valve is not enough. The line downstream stays charged, and that is the part that splits.
- Drain the pan and pull the pump. Standing water corrodes the pan all winter and takes the pump with it.
- Clear scale and debris. Colorado water is hard. Cleaning it out in the fall is what makes spring start-up a non-event.
- Cover the unit and seal the register. An open ceiling register is a hole to the roof all winter — sealing it is one of the cheapest heating-bill fixes in the house.
- Inspect while we are up there. Pad, belt, motor, and panel condition get checked on the way out, so anything aging out is known in October instead of the first 95° day in June.
Can you just cover it yourself?
You can, and a lot of homeowners do — which is why we see burst lines every November. A cover protects the metal cabinet from weather and debris. It does nothing for the water sitting inside the line. The single most common and most expensive mistake we find is a covered unit with a fully charged supply line behind it.
What it costs to wait
A shutdown booked in September or mid-October is a single flat-rate visit. A shutdown booked after a hard freeze is a different conversation: the line has to be inspected before it thaws, and if it has already split, you are paying for a plumber, a drywall repair, and possibly insulation — on top of the cooler work.
Book both seasons in one call
Most of our Aurora customers schedule the fall shutdown and the spring start-up together. Same visit, same technician, no thinking about the cooler again until May. Ask about it when you book.
Cooler shutdown: $150
Furnace service is also $150. Book both in one visit for $200 — you save $100.
Text, call, or click 303-525-7414 · Repair call $89 flat · 10% off for seniors, military, veterans & first responders
Call 303-525-7414 Text 303-525-7414Frequently asked questions
When exactly should an Aurora cooler be shut down?
The right window is late September through mid-October, before the first hard freeze. The first freeze of 2026 reached Aurora on Friday, October 16, so if your cooler still holds water, now is the deadline.
My cooler is a ground unit, not rooftop. Does it still need this?
Yes — ground units still have a charged supply line and a water pan. The exposure is different but the failure mode is the same.
Do you cover rooftop coolers?
Yes, both rooftop and ground units, and we seal the ceiling register from inside as part of the visit.
Is a senior discount available?
Ask when you call. Have your ID ready — proof of age is required at the visit. See our senior discount page for how the 10% senior rate works.
What if the freeze already happened?
Call anyway. We can still shut the system down, but the supply line needs to be checked before it thaws rather than after. Earlier is meaningfully cheaper.
Related pages
This page is general information for Aurora, Colorado homeowners and is not a substitute for an inspection of your specific system. Prices shown are our flat-rate service prices for standard residential evap cooler shutdown and gas furnace service in our Aurora service area.