MN Landscape Practice Questions - Minnesota Landscape Contractor License Exam

What is the standard method for winterizing a landscape irrigation system in Minnesota?

Draining the system by gravity and opening all drain valves Using compressed air to blow out all water from pipes, valves, and heads Adding antifreeze to the entire system Insulating the above-ground components with foam wrap

Correct Answer:

Using compressed air to blow out all water from pipes, valves, and heads

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