Plan irrigation winterization before the first freeze

Identify the system

Winter preparation depends on climate, pipe layout, valves and manufacturer instructions. Collect the controller model, component manuals and any as-built drawing before arranging service. A neighbour’s winter routine may not suit your equipment.

A controller setting is only one step

Rain Bird’s winterization resources distinguish controller preparation from protecting the water-filled system. Turning the timer off does not itself remove water from components exposed to freezing.

Leave compressed-air work to an equipped professional

Ask a qualified irrigation professional which drain-down or winterization method is appropriate. Do not improvise air pressures or blow through components without their manufacturer’s procedure. Keep a service record and clear instructions for the spring restart.

Prepare a service handover

Before the appointment, list accessible valve locations, previous repair areas and any components added since the last winterization. Ask the contractor what access is required and whether any portable equipment needs separate storage. Keep the appointment confirmation and the agreed scope with the system documents.

For example, a new garden drip branch may not appear on an old zone drawing. Mark that branch and tell the service person about it. A winterization visit based only on last year’s record could overlook a change unless the current layout is supplied.

Record what was completed

Request a dated service note identifying the areas and equipment addressed, any defects found and what remains outstanding. Ask how the controller has been left and who is responsible for the spring restart. If the contractor cannot identify a component or its procedure, resolve that uncertainty before proceeding. Use a qualified professional for pressurized-air work, unfamiliar valves or equipment whose winter instructions you cannot establish. Keep those instructions available for future service visits.