Lawn sprinkler service & repair in Thornhill.

In Thornhill, the safe window for spring opening is typically the second week of April through mid-May, after the last hard frost. Opening too early risks freeze damage to backflow assemblies and exposed risers. We start booking in late March and prioritize repeat customers first — book early to lock in your preferred week.

Our service call (mobilization + on-site assessment) is $95. Repair labour is billed at $95 from there. Common parts costs: sprinkler head replacement $68, pipe break repair from $120, full 3-valve manifold rebuild starting at $135 plus valves. If our AI-Smart-Intake diagnostic tool correctly predicts the fix, you get one hour of repair labour free on the diagnosed work — our only standing discount.

Yes — during the active irrigation season (mid-April to mid-October), we hold same-day repair slots for Thornhill addresses booked before 11 AM, subject to availability. Most Thornhill calls land within 4–6 hours of dispatch.

Thornhill straddles two York Region municipalities — properties west of Yonge Street are inside Vaughan, properties east are inside Markham — and the bylaws differ slightly. Vaughan permits watering 6 a.m.–9 a.m. and 6 p.m.–9 p.m. on odd/even days matching your house number (May 15 to September 30). Markham permits either 6 a.m.–9 a.m. OR 6 p.m.–9 p.m. (not both) on odd/even days, June 1 to September 30. Both follow the odd/even house-number rule. We confirm which side of Yonge you're on during spring opening and program the controller accordingly.

The Ontario frost line in York Region is approximately 1.2 metres (4 feet), but irrigation lines don't need to be buried that deep — they're drained and pressurized only during the warm months. PJL buries mainlines 8–12 inches deep and laterals 6–8 inches deep, which is standard for the GTA. Fall winterization (compressor blowout) is what protects them from freeze damage, not depth.

Yes — Hydrawise retrofits are one of our specialties. Patrick is Hunter-certified through Hunter University, and we install Hunter HPC-400 Hydrawise WiFi controllers on existing systems regularly. Pricing: $595 for 1–4 zones, $750 for 5–7 zones, $1,195 for 8–16 zones, all-in. Typical install takes under 90 minutes.

We service Thornhill on both sides of Yonge including Old Thornhill (Vaughan side), Thornhill Woods, Royal Orchard, German Mills, Bayview Glen, Bullock-Stiver Mill, Doncrest, Thornlea, Glen Cameron, and Thornhill Heights — plus the Yonge, Bayview, John, and Steeles corridors.