There's actually about a foot between the pipes ....
The cold feed is 3/4 ..... it T's to the electric h/w ... then ends up stepping down to 1/2 inch leading up to the kitchen about 4 ft. past the T....
I agree that it could be the hot water equalizing the cold water as it passes by the feed...
My daughter just purchased a home which has an oil boiler w/ summer-winter hookup for domestic HW. There is also an electric HW heater.
A single Cold water line to the house feeds the domestic water feed on the oil burner and continues about 20 ft. to the cold water feed connection on the...
