Preparing your Calgary sprinkler system for winter involves three distinct steps — shutting down watering cycles, professional compressed-air blowout, and post-blowout isolation. This step-by-step guide walks you through the full winterization process and explains what J.G. Irrigation handles vs what the homeowner does.
Calgary sprinkler winterization — Complete Step-by-Step Process
| Step | Who Does It | When |
|---|---|---|
| 1. Stop all irrigation cycles | Homeowner — switch controller to Rain Off or Off | When daytime temps drop below 10°C consistently (mid-September) |
| 2. Book professional blowout | Homeowner — call J.G. Irrigation: 587-433-4795 | Early September (before September 20 for guaranteed booking) |
| 3. Pre-blowout: locate access point | Homeowner — clear path to irrigation main shutoff and blowout port | Day before blowout appointment |
| 4. Compressed-air blowout | J.G. Irrigation technician — zone-by-zone, 2-3 passes each | 20-60 minutes on site |
| 5. Close irrigation main shutoff | Homeowner (or technician if accessible) — inside home near water meter | Immediately after blowout completes |
| 6. Leave controller off for winter | Homeowner — controller stays off until spring startup | Until May 2027 |
J.G. Irrigation handles steps 4 and 5 (blowout + confirming shutoff). The rest are simple homeowner steps. The most common winterization mistake: not closing the main shutoff after the blowout — residual line pressure can allow trickles to re-enter the system. Always close the irrigation main after blowout. Call 587-433-4795 to book your Calgary blowout.
Calgary Sprinkler Winterization — Book Your 2026 Blowout Now
J.G. Irrigation — Calgary Irrigation Services
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