One of the most common questions before booking a Calgary irrigation blowout: “How long will the technician be here?” The answer depends on your zone count and system type — but most residential Calgary blowouts take 30-60 minutes. Here is the full breakdown.
Calgary Sprinkler Blowout Duration — by System Size
| System Size | Zones | Time on Site | Price Range |
|---|---|---|---|
| Small (townhouse / condo) | 3-4 zones | 20-30 min | $90-$100 |
| Standard residential | 5-7 zones | 30-45 min | $90-$120 |
| Large residential | 8-11 zones | 45-75 min | $120-$160 |
| Estate / large lot | 12-18 zones | 75-120 min | $160-$220 |
| Commercial / HOA | 18+ zones | 2-4+ hours | $300+ |
What Happens During the Blowout Visit
- Technician connects commercial compressor to the irrigation blow-out port (usually near the backflow preventer)
- Irrigation water supply shut off at the main valve
- Each zone is activated one at a time from the controller
- Air runs through each zone for 30-60 seconds until all water is expelled from heads
- Each zone is cycled 2-3 times for full purge (especially important on Calgary clay soil with pooled water)
- Backflow preventer isolation valves closed and winterized
- Controller set to rain/off mode for winter
- Technician provides verbal condition report on any heads or valves that need attention in spring
Do I need to be home during the Calgary irrigation blowout?
Ideally yes — the technician needs access to the irrigation controller (usually in the garage) and the main irrigation shutoff (mechanical room or utility area). If you cannot be home, you can show us where the controller and shutoff are in advance and leave the relevant areas accessible. Call J.G. Irrigation to arrange: 587-433-4795.
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J.G. Irrigation — Calgary Irrigation Services
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