We had an incompetent Rainsoft installer over at our house who apparently did not flush the flux out of the system properly. We ended up getting it in our kitchen sink and bathtubs. How can we make sure it's all gone from our pipes and what should would use to properly clean our sink and tubs? We'd...

The 3/4" (insulated) lineset i have has a 6" rigid 90 degree end. Is that designed for the condenser or air handler end? It seems that it would fit in through the siding and give enough room to solder on from there to the ah. Otherwise you couldn't bend the tubing through the hole in siding and...

If a magnetic flux passes through a circular coil when its diameter is D, what should be its diameter (in terms of D) so that only half as much flux passes through it in the same field? Assume that the magnetic field is uniform over the area in both cases.

Hi all, What type of flux is recommended for soldering copper pipes? I learned to solder quite a while ago and have since then piped a residential kitchen, and an entire commercial kitchen at a local take-out food store (two double sinks, two custom-made over-the-stove ½" pot fillers, and...