Goodman 2.5 ton coil

[hvac7]

I found a leak on a-coil that could easily fix without replacing. So I abrased pin hole and pressure tested with a trace of freon and nitrogen (150 psi). So with that in the system I decided to double check with leak detector and once again leak detector went off like there was a leak but no drop in pressure. I am just wondering if leak detector is still picking up from previous leak. And second since the weather is not to bad around here this time of year I asked the homeowner if could leave system off and leave the pressure on til tomorrow morn. Do you think that there will be a change in pressure left on system because of the differances in climate ( 85 deg. when pressurized and around 65 - 70 deg. in the morning?

[coolwhip]

You have allready spent to much time on it. Replace it and be done with it.

[BobbyBJr]

I'd think it would depend on how much freon you have in the coil, but I still wouldn't expect it to drop much. If it has dropped more than a few pounds I'd suspect another leak.

Bobby

[RoBoTeq]

Pin hole leaks usually run in multiples due to formicary corrosion or moisture left in coil during installation.

Best to replace.