Be Careful
If you are not blowing out the water lines with air pressure, water tends to stay in the mixing valves of showers and faucets and that is where a lot of breaks happen. Look to get some air in those lines one way or another so the left over water drops and what not does not congregate in the valves. If in the valves and has no place to go it will expand there and crack them.
Also leave the valves open, and before draining an electric water heater, make sure the electricity is shut off otherwise you will blow one or both of the elements.
Its easy once you get comfortable with it! I do pay someone now to blow my new place out only because we have a lot more appliances to worry about than before just having a shower and sink
Good Luck
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Capt. of the "No Worries"
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