Why Winterization Is Essential for GTA Sprinkler Systems
Ontario winters push ground temperatures well below freezing. Any water remaining in your irrigation pipes, valves, or heads when temperatures drop can freeze, expand, and crack — causing damage that ranges from a few broken heads to burst manifolds and cracked backflow preventers. Repairs from freeze damage typically cost several times more than a proper fall blowout.
Winterization (also called a sprinkler blowout) removes all the water from your system before the first hard freeze. It is the single most important annual maintenance task for any GTA irrigation system.
Fall Sprinkler Blowout — What We Do
- Shut off the water supply to the irrigation system at the mainline
- Connect a commercial-grade air compressor to the system
- Activate each zone in sequence, blowing all residual water from the pipes, heads, and valves
- Inspect heads for visible damage while they are active
- Shut down the controller and set it to the off-season mode
- Note any heads or valves that should be addressed before spring start-up
The blowout process takes 30–60 minutes for a typical residential system. We use the correct compressor volume (CFM) for your system size — using an undersized compressor is a common DIY mistake that fails to clear water from all zones.
Spring Irrigation Start-Up — What We Do
When temperatures are consistently above freezing and your lawn is ready to start watering again, our spring start-up service gets your system running for the season:
- Slowly pressurize the system to check for winter damage before full activation
- Activate each zone and inspect all heads for damage, clogging, or misalignment
- Adjust head angles and arcs that shifted over winter
- Check backflow preventer operation
- Update controller scheduling for spring and summer watering needs
- Confirm smart controller weather data is active and current
When to Book Winterization in the GTA
In the Greater Toronto Area, fall blowouts are typically needed between mid-October and mid-November. The exact timing depends on the weather forecast — the goal is to complete the blowout before any sustained overnight temperatures below 0°C. We recommend booking early in October to secure your preferred date, as this is our busiest service period.
Seasonal Service FAQ
Do I need to be home for the blowout?
Someone needs to be available to let us access the water shutoff, but you don't need to watch the process. The whole service takes under an hour for most homes.
Can I blow out my system myself?
Technically yes, but most homeowner air compressors don't have sufficient volume (CFM) to properly clear all zones, and using too much pressure can damage valves. A professional blowout is inexpensive insurance against a much larger repair bill.
Do you service systems installed by other companies?
Yes — we provide seasonal service for any residential irrigation system in the GTA, regardless of who installed it.
What if you find damage during the spring start-up?
We document any issues found and provide a repair quote on the spot. Minor repairs (single head replacements, valve adjustments) can usually be completed the same visit.
Also see: Sprinkler repair & maintenance · New system installation
Serving the Greater Toronto Area
Sprinkler winterization and spring start-up services across: Toronto, Mississauga, Brampton, Vaughan, Markham, Richmond Hill, Oakville, Burlington, Pickering, Ajax, Whitby, and Oshawa.