New AC Unit but No Cooling

[V3212]

The AC (3 tons) in the home (about 1600 sq ft) I am renting was replaced less than a month ago.
Thermostat setting: cool to 78 deg F.
Average outdoor temps: Day 105 deg F; Night 82 deg F

Observations:
1) Temperature never goes below 81 deg F, even at night.
2) Air coming out of the vents does not feel cool.
3) High pressure line both near the indoor evaporator & the outside condenser do not feel warm.
4) Low Pressure line both near the indoor evaporator & the outside condenser feels cool (but not as cool as the ones my neighbors' home ACs).
5) Low pressure line both near the indoor evaporator & the outside condenser do not sweat.
6) Unit just keeps running but since the target temperature is never reached, the unit never stops.

What the AC technicians said:
1) Thermostat was not set properly.
Action Taken: I had the technician set the thermostat himself just to make sure.
Result: No change in AC cooling performance

2) The filters need to be changed.'
Action Taken: Put in new (regular) filters both at the evaporator & at the door leading to the space where the evaporator is hidden.
Result: No change in AC cooling performance

3) The temperature outside is too hot that the AC can't keep up.
Action Taken: Added insulation to the doors and windows where warm outside air was probably passing through.
Result: No change in AC cooling performance

4) Freon not enough
Action Taken: AC tech took measurements at the condenser & said that the freon levels were OK.
Result: None since the property manager did not want to add freon if levels were OK.

The property manager says that since the AC techs already checked the system twice after the new unit was installed and did not find anything wrong with it, she can't do anything else for me.
That is unacceptable since my neighbors' ACs are the same as ours and whose houses are of the same size and yet their homes are cool, even during the hot afternoons.
Mine does not even go below 81 at night.
I wake up in the morning before the sun rises and I'm lucky if the temperature gets to 81 deg F.
I suspect that either the AC unit was improperly installed, that they failed to do something, or something was improperly done.
I think I'll be better off opening the windows and turning on the ceiling fans.

I would like to know what other things need to be considered based on the observations I made and what else need to be checked.
It's really uncomfortable at home, especially during the mid to late afternoons when the indoor temp goes up to 90 deg F (in spite of a thermostat setting of cool 80 deg F).
My electric bill is almost double of what I normally get... I expect the next one to be higher.
On top of that, I have a 14-moth old baby at home.
Please help!

[saintmichael36]

Does the unit have a TXV or a fixed metering device? What method was used for charging?


The Day You Think You Know Everything Is The Day You Stop Learning.

[catmanacman]

Move to a house that the ac works properly ,your land lord probably had low bidder do the job

[dandyme]

is this cooling only or heat pump; or did I miss that info?

[vstech]

many signs of what you are reporting point to the problem. unfortunately, we would have to be there to fix the problem.
you have two choices. call a qualified service tech out, and pay them to fix the system, or move. if you pay to fix it, it's POSSIBLE the landlord will reimburse you for the repairs, but unlikely.

[V3212]

I don't believe there is a TXV.
All I was told is that after replacing the condenser unit outside they checked the freon levels and said they were OK.

[V3212]

is this cooling only or heat pump; or did I miss that info?

The thermostat works for both heating & cooling.
Does that mean I have a heat pump.
Sorry, I don't know how to identify which is which.
How do you find that out, by the way?

[beenthere]

Post brand and model number of both the inside unit and the outdoor unit.

[Six]

Does the unit have a TXV or a fixed metering device? What method was used for charging?


The Day You Think You Know Everything Is The Day You Stop Learning.

A home owner isn't going to know that information.

[V3212]

many signs of what you are reporting point to the problem. unfortunately, we would have to be there to fix the problem.
you have two choices. call a qualified service tech out, and pay them to fix the system, or move. if you pay to fix it, it's POSSIBLE the landlord will reimburse you for the repairs, but unlikely.

That's what I intend to do - look for a CERTIFIED PRO and have them check the system.
I just hope that the true problem could be resolved or, at least, found so I would have a better chance of asking the owner to reimburse me.

[V3212]

AC Condenser unit was replaced about 3 week ago.
Specs:
Goodman GSC130361GA
208 - 230 volts AC
60 Hz
Fan motor: 1.10 FLA; 1/6 HP
Compressor: 13.4 RLA; 74 LRA
Min Ckt amps: 17.9
Nominal operating charge: 77 oz (R-22)

[V3212]

AC Evaporator coils were acid washed a week before the condenser was replaced.
Specs:
Payne model PF1MNC036
Prod Num: PF1MNC036000AAAA
208 - 230 volts AC
Motor: 2.4 FLA; 1/3 HP
Phase 1
60 Hz
R-22 design PSIG: 300

[V3212]

Post brand and model number of both the inside unit and the outdoor unit.

Condenser: Goodman GSC130361GA
Evaporator: Payne model PF1MNC036

I posted more specs on both via Quick Post.