A system going into new ground, or an existing one being extended to cover an addition to the yard.
A new install is where head-to-head coverage either gets designed in or does not, and it is far cheaper to lay heads out correctly the first time than to compensate for a bad layout with longer run times for years afterward. That means spacing heads so each one's throw reaches the next, keeping spray heads and rotors on separate zones since they apply water at different rates, and zoning by sun exposure and plant type rather than by whatever pipe run was convenient.
Zone expansion carries the same rules into an existing system: a new bed, a new lawn area or added landscaping needs its own properly spaced zone, not a tap added onto whatever zone happens to run nearby. Backflow prevention gets accounted for at this stage too, as a real functional component of the system rather than an afterthought bolted on once everything else is finished.
Describe the symptom and we will match you with an irrigation contractor who traces the actual cause before replacing anything.
Get an Irrigation Pro OutA rough description is plenty — we will follow up to narrow it down before anyone comes out.
