Lynnwood sprinkler blowouts
One hard freeze can crack your pipes, valves and backflow. We clear the water out before that happens.
Compressed-air blowouts, backflow draining and controller shutdown, done by our own crew out of Lynnwood.
Leave your name and number. Danny calls you back to set a time.
Prefer to talk? Call (425) 648-9443
5.0 ★★★★★Google · 7 reviews
4.5 ★★★★½Yelp · 15 reviewsSprinkler winterization, often called a blowout, uses compressed air to push the water out of your sprinkler lines, valves and heads, so nothing can freeze and crack over the winter. It is for any homeowner in Lynnwood with an in-ground sprinkler system. Grizzly winterizes systems in Lynnwood and across Snohomish and King County, drains and protects the backflow preventer, and turns the controller off until spring.
Every blowout
Every blowout follows the same four steps, so no water is left to freeze.
We shut off the water to your sprinkler system before anything else.
Compressed air runs through each zone, one at a time, until only air comes out.
We drain the backflow preventer and set its valves for winter. It's the part most likely to crack.
Your timer is set to off so nothing runs until spring, and we note any leaks or broken heads we see.
What we do
Compressed air pushes the water out of your lines, valves and heads, zone by zone.
→ Every zone cleared → Run until only air comes out → Lawn sprinklers and lines
Your backflow preventer drained and protected, because it's the part most likely to crack.
→ Drained before the freeze → Valves set for winter → Protected from cold snaps
Valves drained so trapped water can't freeze and split them, and your timer set to off.
→ Valve draining → Controller shutdown → Nothing runs all winter
Exposed pipes and assemblies covered so a cold snap doesn't catch them.
→ Exposed pipes → Above-ground assemblies → Cold-snap protection
We turn your system back on, check every zone and adjust the heads.
→ System turned back on → Every zone checked → Heads adjusted
Cracked pipes, valves or backflow from a freeze found and fixed.
→ Cracked lines → Split valves → Damaged backflow
Is it time?
Freeze damage happens underground, and you won't see it until spring. Here's when a blowout matters most.
What it means: water left in the lines expands when it freezes and can crack pipes and valves underground.
What it means: now is the time to book, so the lines are empty before the first frost.
What it means: it's the part most likely to crack, so it needs to be drained and protected.
What it means: skipping a year is a gamble, and the damage doesn't show until the system is turned back on.
What it means: we note them at the blowout so they get fixed before spring.
What it means: too much air pressure can break heads and pipes, and a missed step can leave water in the backflow.
Our approach
A blowout only works if every zone and the backflow end up empty. Here's the difference doing it fully makes.
1. Leave the system on into November 2. Push air through at too much pressure 3. Forget to drain the backflow preventer 4. Find the cracked parts at spring turn-on
Result: a cracked backflow or split valve that often costs more than several years of blowouts.
1. Shut off the water to the sprinkler system at the source 2. Blow out each zone with compressed air until only air comes out 3. Drain the backflow preventer and set its valves for winter 4. Turn the controller off and note any leaks or broken heads for spring
Result: no water left to freeze, and a system ready to run in spring.
Timing
At Paine Field, the closest NOAA weather station to Lynnwood, the first frost arrives around November 17 in a typical year, and by October 31 in about one year in ten. Book your blowout in October so the lines are empty before the cold arrives.
April – September
Run the system and watch for leaks or dry spots. Get repairs done before fall.
October
Book your blowout so every zone is empty before the first frost, and before the fall schedule fills up.
November – March
Lines stay drained and the controller stays off. Exposed pipes and assemblies stay covered for cold snaps.
Late March – April
The system goes back on, every zone gets checked and anything winter broke gets fixed.
Oct 31
First frost in 1 year out of 10
Nov 17
First frost in a typical year
Mar 9
Last spring frost in a typical year
Source: NOAA NCEI 1991–2020 climate normals, Everett Paine Field (USW00024222). First and last 32°F nights. Need repairs before your blowout? →
Why Grizzly
01
We run air through each zone until only air comes out, so there's no water left to freeze.
02
The part most likely to crack is drained and set for winter every time.
03
We clear each zone one at a time with compressed air.
04
If we see leaks or broken heads, we tell you so they get fixed before spring.
05
Nothing subcontracted. Licensed, bonded and insured, and based in Lynnwood.
06
If a freeze cracks a pipe, valve or backflow, we find it and fix it.
How it works
01
Call (425) 648-9443 or send the form to book your blowout before the first freeze.
02
We book your blowout and let you know when we're coming.
03
Our own crew blows out every zone, drains your backflow and turns the controller off.
04
Every zone is cleared and the controller is off, so there's no water left to freeze.
Reviews
★★★★★
"Danny worked on our broken irrigation pipe and a underground connector. He was efficient, on time, and got the job done cleanly. I would hire him again."
Anirban B. · Google review
★★★★★
"… Weeks after installation, I had an issue with one garden area getting oversaturated along with water build up so I called Danny and he came right over that same day and found that there was a faulty valve and he took care of it right away. Grizzly is competitively priced and Danny is very knowledgeable. …"
Ronald H. · Google review
★★★★★
"… He did a great job and was very thoughtful to not tear up the yard, and cleaned up the sidewalk as well. It turned out very nice! I appreciated the time he spent with me answering questions about my sprinkler system and other landscaping related questions I had. …"
Eric H. · Google review
Our guarantee
If irrigation work we did fails within 18 months, we come back and fix it. Every zone is cleared before we leave, so there's no water left to freeze.
Where we work
From our base in Lynnwood, we winterize sprinkler systems across Snohomish and King County. Near the edge of the map? Call and we'll tell you straight away.
Related services
Install, repair and replace the assembly that protects your drinking water.
Questions
Yes. Even one hard freeze can crack pipes, valves and your backflow preventer. Winterizing protects the system so it's ready to run in spring.
Before the first frost. At Paine Field, the closest NOAA weather station to Lynnwood, the first frost comes around November 17 in a typical year and by October 31 in about one year in ten. Booking in October gets it done before the cold and before the fall schedule fills up.
A blowout uses compressed air to push all the water out of your sprinkler lines, valves and heads. With no water left inside, nothing can freeze and crack over the winter.
You can, but it's easy to damage the system. Too much air pressure can break heads and pipes, and missing a step can leave water in the backflow preventer. A professional blowout protects your system.
It's a gamble. A cracked backflow or split valve often costs more to fix than several years of blowouts, and the damage doesn't show until the system is turned back on.
Yes. Grizzly Landscape & Construction LLC is registered with Washington L&I as contractor GRIZZLC755LL, and is bonded and insured. You can look the number up on L&I's Verify a Contractor tool.
Yes. Our irrigation work, including winterization, carries an 18-month warranty: if work we did fails in that time, we come back and fix it.
Free consultation across Edmonds, Lynnwood and Mountlake Terrace, WA.
