If it was well designed, it would include drains and you need do
nothing. Unfortunately, there are a lot of systems where no drains were
installed, and since they are buried, it would be hard to find them.

The trick with doing it yourself is that you need a high volume air
compressor (many home models are low volume), and a way to hook the air
compressor into the system.

My suggestion would be to hire a professional for this year, but insist
that you be able to watch him work. That way, you will see how to hook
up the compressor. If a lot of water comes out of the heads when he
injects the air, I would assume your system has no drains, and then you
will have to decide whether to install drains, or get your own
compressor, or continue using the professional. If, on the other hand,
nothing but air comes out of the heads, I would take that as evidence
that your system has drains, and you don't have to worry about blowing
it out each year.

Jeffrey J. Kosowsky wrote:
We just bought a house with a Hunter in-ground sprinkler system. With
winter approaching we need to drain and winterize the system.

- Is this a DIY project or should we get professionals?

- If we want to do it ourselves, how do we go about it and what special
equipment do we need?

- If we go with a professional, what would it typically cost for a
system with 9 zones?

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