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BillyHvac
BillyHvac, Journeyman HVAC Tech
Category: HVAC
Satisfied Customers: 22312
Experience:  Endorsed for unlimited heating, cooling, oil burners, boilers, refrigeration, hydronics
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Air conditioning

Customer Question

Air conditioning
Submitted: 7 months ago.
Category: HVAC
Expert:  BillyHvac replied 7 months ago.

Hello,

What is your question?

Customer: replied 7 months ago.
I was having hard connecting because of my password, anyway i am having a unit which is not cooling the house as it should be, and i have a lot of readings which i must give you
Customer: replied 7 months ago.
Outside temp is 90 right now, temp coming out from condensor fan is 100, temp going to evap is 75 and coming out of evap is 69
Customer: replied 7 months ago.
Thermostat is reading 81
Expert:  BillyHvac replied 7 months ago.

thank you...sounds low on freon.

Clean coils....but sounds more like a freon issue

Customer: replied 7 months ago.
Suction pressure is 65 and high side 225, system using R22
Customer: replied 7 months ago.
I opened the evap and test the txv looks like its working fine , pressure moving up and down when i put it in ice and warm it by hand
Expert:  BillyHvac replied 7 months ago.

At 90 f outside you should be 75 suction, 265 head and a 15 degree delta T

Customer: replied 7 months ago.
Call me
Expert:  BillyHvac replied 7 months ago.

I apologize but I am not currently configured for phone contact. I can, however, opt to someone who is.

Customer: replied 7 months ago.
Dont worry just keep helping me here as we are
Customer: replied 7 months ago.
I add some freon and low side is reading 70, high side 250
Expert:  BillyHvac replied 7 months ago.

ok that is much better...is the suction line colder and the register temp 15 degree cooler than room temp?

Customer: replied 7 months ago.
Give me 1 min please
Customer: replied 7 months ago.
One of the register is giving me 77
Customer: replied 7 months ago.
Other one is giving me 79
Customer: replied 7 months ago.
Thermostat still at 81
Customer: replied 7 months ago.
Air going at filter is 84.5
Expert:  BillyHvac replied 7 months ago.

previously you said.....

Outside temp is 90 right now, temp coming out from condensor fan is 100, temp going to evap is 75 and coming out of evap is 69

is that different now?

Customer: replied 7 months ago.
Temp over outdoor fan change to 108
Customer: replied 7 months ago.
Let me check the evap in and out now
Customer: replied 7 months ago.
Going in at 82 and coming out at 76
Customer: replied 7 months ago.
At one point i can see the temp reading even 70
Customer: replied 7 months ago.
Reading 66 now
Customer: replied 7 months ago.
Does it make sense to increase the low side pressure to 75?
Customer: replied 7 months ago.
Now the temp coming out from evap is going up again to 72

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