01
Individual service page
Sprinkler Repair
Diagnosis and repair for damaged pop-up spray heads, leaking lines, controllers, valves, wiring, and zone problems.
View sprinkler repair pageHome › Landscaping Services › Blowouts & Winterization
Sprinkler Blowouts & Winterization
Sprinkler winterization helps reduce freeze damage by removing trapped water before Colorado temperatures fall below freezing. When compressed air is appropriate, the process uses regulated pressure, a designated blowout connection downstream of the backflow assembly, and a zone-by-zone sequence suited to the property’s drain configuration.
Expert Sprinkler Blowouts to Winterize Your Irrigation System
Shut off the irrigation supply and follow the system- and manufacturer-specific drain procedure. When compressed air is appropriate, connect an adequately sized compressor at the designated blowout connection downstream of the backflow assembly, regulate pressure within component limits, and clear each zone without routing compressed air through the backflow assembly. Drain and protect the backflow assembly separately.
The exact sequence depends on whether the system uses manual or automatic drains and how its backflow assembly, valves, lines, and pop-up spray heads are configured. Trapped water can expand during a freeze and crack lines, fittings, valves, or backflow components.
When to Winterize Sprinkler Line in Colorado
Schedule winterization before freezing conditions can damage exposed or water-filled components; do not wait for a hard freeze. Timing varies with the forecast, elevation, system layout, and water-provider guidance.
A system-specific process includes:
- Shutting off the main sprinkler water supply
- Opening all drain valves to begin removing water
- Connecting regulated compressed air only at the designated downstream blowout connection when appropriate
- Clearing each zone within manufacturer pressure limits without routing air through the backflow assembly
- Draining and protecting the backflow assembly separately, then checking lines, spray heads, valves, and drains
A careful, system-specific process
Pressure, connection point, drain type, and sequence must fit the specific system and component limits. Manual or automatic drains may leave water at low points, but compressed air is used only when appropriate and never routed through the approved backflow assembly.
Don’t Let Frozen Water Ruin Your Sprinkler System
Water left in a system can expand when it freezes and damage sprinkler lines, fittings, valves, pop-up spray bodies, and backflow components. A careful blowout reduces that risk by moving through the zones with pressure appropriate to the system.
No winterization method should be described as a guarantee against every failure. The goal is to clear the system as thoroughly as its layout allows before sustained freezing weather arrives.
Service Areas
Landscaping and sprinkler service near you.
Outdoor Legacy serves homeowners in Centennial, Greenwood Village, Parker, Denver Tech Center, Cherry Hills, and Castle Pines, Colorado.
Questions we hear about blowouts & winterization
When should I schedule a blowout?
Schedule before freezing conditions can damage exposed or water-filled components; do not wait for a hard freeze. Forecast, elevation, system layout, and local guidance affect timing.
Can I just drain the system myself?
Manual and automatic drains may not remove water from every low point, zone, or backflow component. The system layout and manufacturer guidance determine whether compressed-air winterization is appropriate and how it should be performed.
What if a freeze already hit my system?
A freeze does not prove that damage occurred. The system can still be evaluated and winterized, then inspected again during spring startup for cracked lines, failed valves, damaged spray heads or nozzles, and backflow problems.
Separate Service Pages
Other irrigation service pages
02
Individual service page
Sprinkler Installation
Pop-up spray-head systems and zone expansions designed around how your property actually drains, plants, and gets used.
View sprinkler installation page
03
Individual service page
Spring Startup & Activation
A careful spring activation, controller setup, and full-zone check before summer exposes hidden winter damage.
View spring startup & activation page
04
Pricing and repair reference page
Price List & Common Repairs
Current irrigation-repair pricing guidance plus a plain-language index of common spray-head, line, valve, controller, wiring, drip, and backflow work.
View price list & common repairs pageThe grass is greener on this side.
From spring startup through fall blowout—and from double-pass aeration to residential landscaping—request the service your property needs.