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Steve,
I get my HVAC system checked every year by a local company.
HD and/or Lowes usually contracts this work out to local companies anyway.
I pay $79 in Sept for my heating and the same in March for my AC.
System efficiency and filter changes, takes about 45 minutes.
I also change my AC filter by myself around the middle of July.
Never had the contractor try to up sell me.
I believe the water your getting is normal, as you think also.
Can't tell you if running it back into piping is OK, but I'm sure the experts will chime in on that.
IMO for $160/yr to have piece of mind for 2 important systems to function properly and efficiently is worth it.
Matt
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94 turbo 3.6
74 carrera RS race car
05 denali XL
"We are here to laugh at the odds and live our lives so well that Death will tremble to take us." Charles Bukowski
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