Sprinkler Winterization Before the First Freeze
We blow out irrigation lines, shut down the system, and help protect your sprinkler components and backflow assembly from freeze damage.
- Includes up to 8 zones
- Compressed-air line blowout
- System shutdown
- Add backflow testing if needed
Fall appointments fill quickly once freezing weather appears in the forecast.
Winterization checklist
- Irrigation water shutoff
- Compressed-air blowout
- Zone-by-zone winterization
- Controller shutdown or seasonal mode
- Visible backflow freeze-risk check
- Notes for spring repair needs
What is at risk
What can happen if you skip winterization
Freeze damage often shows up later — when you turn the system back on and find leaks, muddy patches, broken parts, or zones that no longer work. A professional blowout and shutdown helps reduce that risk before cold weather arrives.
Cracked pipes
Water left in buried lines can expand and crack.
Damaged sprinkler heads
Frozen water inside heads can break them over winter.
Ruptured valves
Valve bodies can crack, leading to leaks when the system restarts.
Backflow preventer damage
Exposed assemblies are vulnerable to freezing temperatures.
Spring leaks or muddy patches
Often the first sign of damage that happened over winter.
Higher water bills
Hidden leaks from freeze damage can add up before you notice them.
Ready to winterize before the first freeze?
Book winterization only, or combine with annual backflow testing from Starts at $169 for standard residential service.
Why it matters
Seattle winters are mild — but sprinkler systems can still freeze
Water left inside irrigation lines, sprinkler heads, valves, and exposed backflow components can expand during cold snaps and cause damage. Winterization helps reduce the risk before freezing weather arrives.
Protect pipes and valves
Water expands when it freezes, which can crack irrigation components.
Help protect the backflow assembly
Above-ground or exposed backflow parts can be vulnerable during cold snaps.
Reduce spring surprises
A proper shutdown can help prevent leaks and damaged parts when the system is turned back on.
Pricing
Transparent pricing
Prices confirmed before scheduling. No surprise charges.
Sprinkler winterization
| Service | Price |
|---|---|
| Winterization (up to 8 zones) | Starts at $129 |
| Each additional zone beyond 8 | $12 per zone |
Starting prices are for standard residential systems up to 8 zones. Additional zones are $12 each. Commercial, HOA, property management, pump systems, multiple connection points, difficult access, repairs, replacement parts, or unusually large systems may require custom pricing.
How it works
What to expect
Share your address and access notes, we confirm shutoff and timing, then we winterize zone by zone and send service notes.
Submit your request
Tell us your address, number of zones if you know it, and any access notes.
We confirm access
We review shutoff, controller, and system access before scheduling.
We winterize the system
A technician shuts down the system and blows out irrigation lines zone by zone.
You get service notes
We share what was completed and flag anything to revisit in spring.
Frequently asked questions
Protect your sprinkler system before winter
Book winterization now, or add it to your backflow test.