One other thing-
The very first house I winterized by myself I pulled up in the drive and saw what looked like a 1 story small home. I went in, found a bathroom and made my way to the basement. I did my thing and all was good.
Went back in the spring and turned the water on. I heard water running upstairs above the bathroom. I never went and looked but there was a second floor half bath and the toilet tank was busted. So I had to eat a toilet. Luckily everything else was ok.
So now, we go in, open every door, look in every closet, etc for anything plumbing related. (I have found hacked in laundry connections in bedroom closets) I will then turn on a light in each room I’ve got plumbing in so I remember we’re I need to go.
We used to do as many as 300 foreclosed homes every winter...I got pretty good at it and usually had a process ..... I got it down to a fine science and kept the generator and air compressor in the truck....
I took a garden hose carrier and put about 200 feet of air hose on the roller... all I had to do was fire up the gear and drag the hose into every home. First drain down the heater and disconnect the water meter..... Then I would blow 150psi through all the pipes..... throw antifreeze in all the traps and put winterization stickers on all fixtures....
I dont feel it is cost effective to put the pink antifreeze in the lines if you know how to blow them all down properly and you will never get the taste out of the lines...
I was doing about 5 a day for a while and I never had a problem with breaks.. Lots of these homes were in bad neighborhoods and a lot of properties were un-secured so I went in packing a 9mm on me and checking out the whole house for drug addicts before starting the job..
I had a few incidents and close calls happen like being trapped down in a dark basement with a couple of dudes walking in on me.. I was well armed and was basically was left alone....
most of these houses were full of goodies that people left behind and it was more of a treasure hunt for me every day....
my average price for them today is 250 each unless someone is going to throw me a huge volume of them