tngxl

I can't possibly sell this house if it's leaking water like this... even if they didnt notice.. I think I'll try the different piston size. I think it's fairly easy to switch out. And I certainly don't want to take the whole coil back out. The system is entirely vertical.. air in the bottom and straight out the top in to the ceiling. It's a wall mounted, all electric closet system. And it used to work pretty well until I decided to fix the leak.... Thanks again for your responses and your time. If that doesn't help I'll call a pro out. Michael

Thanks for the response. "Exact"? The system is very old. I'm not sure if the evaporator coil is part of the tempstar cooling unit or the fedders heat/air handler unit. Whatever the case I couldn't find an exact match. Old coil was 16x17x2 while the new one is 16x16x2.5. The piston on the new is .059 which I believe is correct....but I'm basing it on a chart I ran across online. Could that be wrong? It's a 2 ton unit. The new fits nicely where the old one sat...gross size is essentially the same...had to put a couple holes in the frame to screw it in to existing holes. It also sits at exactly the same angle. I'm assuming that's ok. I've been leaving the fan on all the time which seems to keep everything fairly dry. But if I only run the fan when the ac starts, then when it shuts down it still drips a lot of water....pools in the pleats of the filter then drips thru. Michael

I have a 2 ton A/C unit (r22) which runs to a closet air handler. I had been having to recharge the system about once or twice per season. Using a freon detector I could tell that the evaporator coil was leaking and decided that I didnt want to leave a leaky coil for the next owner (I am moving soon). My old coil, which worked fine overall was a single flat piece angled from down in front to up in back. The filter is mounted below and the fan is mounted above and pulls air from below, through the coil and out to the house. I bought a new coil, same height and width (mostly) but a bit thicker. Piston is .059, which I believe to be correct for my R22 unit. The placement of the coil was fairly easy but the install was a bear, mainly due to difficult positioning of the output. Eventually it sealed up, held a nice vacuum and the was filled with R22. The system blows cold air now but as soon as the blower turns off, there is so much water in the fins of the evaporator that it drips down in to the filter. Not just a little either. Worse than that, I can tell there is so much water inside the air handler that the wires inside are wet. The day we put it in it was very humid. But this seems excessive. I don't ever remember seeing much water on the previous coil and I never had water on the filter. I'm at a loss as to why the new coil is acting like this. Can anybody give me an idea what is going on?