[L burns]

Hello. Im a new member with a question. I keep my air on 70 n my apt doesnt stay cool. N my air runs alot. Can anyone give me suggestions. Just had Freon put in it. Still the same. Ty

 

[rider77]

Why was the unit charged with refrigerant? Did this individual find and fix the refrigerant leak that led to the unit needing charge?

 

[pecmsg]

Hello. Im a new member with a question. I keep my air on 70 n my apt doesnt stay cool. N my air runs alot. Can anyone give me suggestions. Just had Freon put in it. Still the same. Ty

Maybe get the contractor that put the refrigerant in to come back!

 

[martyinlincoln]

What temperature does it get down to with the thermostat set on 70?

 

[L burns]

What temperature does it get down to with the thermostat set on 70?

It goes down to 70. But my thermostat is suppose to have a light on it. Like when u change the temp so u can see the numbers. That doesnt lite up. I even changed the batteries .

 

[L burns]

It just doesnt feel like 70 in the apt. I was thinking about buying a thermostat to sit out. For being on 70 the apt i think should be cold.

 

[Makeitcold]

70 is pretty chilly if the humidity is 50% or less. I'm guessing you might be having humidity issues if your not comfortable at 70. Low charge can do that, so can to high of airflow. No idea how you went from adding refrigerant to your backlight doesnt work. Your bigger concern is what are you going to do when the refrigerant the guy added leaks out?

 

[NETWizz]

Sometimes adding too much refrigerant is a problem, too.

I know it is counter-intuitive, but an overcharged system does not cool as well. Please let me explain. Refrigerant is merely the carrier of heat. It absorbs heat in the indoor "evaporator" coil and moves it to the outside "condenser" coil where it is less objectionable.

Adding too much refrigerant raises the pressures of the system, and with increased pressures come increased temperatures. Simply put if the low-side "indoor" pressure is 70 PSI, the indoor coil is 41 F (for an R-22 system). That same system if overcharged may have 80 PSI on the lowside, and the coil is now 48 F.

There is sensible and latent heat. Part of what the air conditioner does is remove latent heat (humidity), which goes out the condensate drain. Colder coils work better at reducing humidity provided they do not freeze the coil into a block of ice, which may happen with reduced airflow or low refrigerant charge.

**********************

Other factors play a huge role, too other than charge.

Is your indoor air filter clean?

You should not use a higher quality pleated filter because they reduce air flow. Typically apartments provide cheap filters, so I doubt that is an issue.

Is the evaporator coil clean? Did the technician clean the condenser "outdoor" coil?

****

As for your backlight, the fix for that would most likley be to have your HVAC technician replace your thermostat.

 

[martyinlincoln]

As the others mentioned it's probably a humidity issue but could be the thermostat out of calibration. You can buy devices that show temperature and humidity or simply use a thermometer to see it the temperature displayed on the thermostat is correct or not.

 

[dan sw fl]

MIS-CALIBRATION could be in the Body/Mind OR the Thermostat.

70'F at 48% _ _ _ _or 72% R.H. are TWO ENTIRELY DIFFERENT ENVIRONMENTS:
___ DRY COOL - - - - - & WET COOL
_ nICE __ & THEN THERE IS - MUGGY -.

77'F AT 49% = Nice IMO.

Standard conditions : 75'F at 50% R.H.


USE CEILING FANS
________

ASHRAE 55
_________\ Everyone is different.!

 

[dan sw fl]

DEFINE COMFORTABLE & COOL

ASHRAE 55 ___ 77'F AT 49% R.H.