Return duct looks a bit puny. You need at least a 20" in flex. Im not convinced thats the problem though.
If you can sometime. post a pic of how the return duct ties into the return filter box/grille.
Not a great way to tie the return flex into the air handler. Its restrictive. The small sully duct is too close to the air handler where it taps off the plenum.
Looks like the return duct got smashed alittle in the next to last pic.
12%, is that your OD humidity? The WB is too high to be the ID humidity.
I think you got some low airflow trouble, and are gaining temp as it goes through your ductwork. That is of course just a guess from my end of the screen.
Return duct looks a bit puny. You need at least a 20" in flex. Im not convinced thats the problem though.
BEEN: A picture from the attic or from underneath? If its the attic your looking for its the first pic. Yes 12% OD RH. Inside isn't much higher..
AR: I agree with you, but what do I know? It's a little bit of a tight turn, but nothing terrible...
Underneath. can't see anything with the insulation covering the flex.
BEEN: I'll get one as soon as I can. I can tell you that I looked through the intake flex, toward the AH on the inside and it apppears to be sealed quite well. None of that flex tube was messed with at the GRILL end by the techs. It's been untouched since the house was built...
Ok, I was thinking it may have got pulled when they swapped out the air handler.
No, they pretty much uprooted the old AH and affixed the new one directly into the void of the old one...
1. Could the condenser fan be stuck on low speed all the time? If so that would likely ly explain the low delta T (14 F).
2. Check and see if the heat strips are coming on. You can do this yourself. Go outside and count how many revoluations your electric meter makes per minute. Put unit on heat, count again. Turn thermostat up about 5 degrees or put on auxillary heat and count revolutions. Now, put the unit on cool and count revolutions per minute. This should let you figure out if the heat strips are coming on.
Also, have the tech check the amp draw next time they are out.
Best of luck to you.
I'll check into that ALEX, thank you for the input. With all of guidance you guys have given me, the possible problem is slowly getting eliminated, one by one. At this point, the heat strips are suspect or it's just flat out, low on "juice". I'll let you all know what the problem was, just in the interest of science...
Thanks again ALL, for your advise....
have the tech check superheat and subcooling along with pressures and the type of metering device, check supply and return air temps again then post them on this thread.
I'll do my best AIR...
Well, the verdict is in...The system was low on refrigerant due to a leak. After inspecting the system, he found that the install crew omitted a small Teflon washer at the TXV connection to the AH. He fixed that small over sight and recharged the system. I checked the numbers again and found that I now had 49* air at the output grill!
Thanks again to you all for taking YOUR time to respond to my stupid questions. It was much appreciated and I can't thank you enough...
Glad to hear it. Now that it is operating properly, you need to have some of those ductwork issues looked into. Although I have seen houses here with the same if not worse ductwork, you should have some of that fixed. The return looks small, with a 5 ton unit, it should be 20" flex, and you also need a plenum attached to the unit. This will also avoid the u-turn that the flex has to make into the unit. You also want to make sure that your return air grill is properly sized, mine is a 20x40.
Congrats.
Thanks AR. SAM, I checked it out and the intake grill is 20 x 40 and the flex is in fact 20", as measured from the inside of the grill...
Cool, your pics made it look smaller.
I believe that your unit is oversized. When you increased the cooling capacity it doesn't run long enough to dehumidify your house. That could cause the problem. Perhaps you have a register too close to the stat also.